Last updated: January 18, 2025
New Jersey's climate is characterized by a diverse range of temperature and precipitation patterns, categorized under the Koppen-Geiger climate classes: Cfa (humid subtropical), Dfb, and Dfa (humid continental). The state's weather is marked by a striking contrast between seasonal extremes; the temperature can plunge to a frigid -23°C (-9°F) in February, while reaching scorching highs of 38°C (100°F) during July. On average, the state experiences a temperate climate with an average annual temperature of 13°C (56°F), contributing to its rich biodiversity and distinct seasonal changes.
New Jersey experiences a pronounced seasonal temperature pattern, with cold winters giving way to warm summers. January and February are the coldest months, with minimum temperatures dropping to around -23°C (-9°F), while average temperatures hover just above freezing. As spring approaches, temperatures gradually rise, peaking in May with an average of 17°C (62°F). June marks the onset of summer, where temperatures soar, culminating in July's peak average of 25°C (78°F) and maximums reaching up to 38°C (100°F). As autumn arrives, temperatures begin to cool, with October displaying a notable decline, averaging 16°C (61°F), before plunging again into the winter chill by December, which sees averages dropping to around 4°C (39°F). This cyclical shift not only defines the state's climate but also shapes its ecological diversity and seasonal activities.
The climate across New Jersey varies significantly from city to city, with Princeton experiencing temperatures ranging from a chilly minimum of -17°C (2°F) in January to a sweltering maximum of 37°C (98°F) in July. For more details on Princeton's weather, see the monthly temperature in Princeton. Similarly, Jersey City faces frigid winters with lows of -18°C (-1°F) in January, rising to hot summers with highs of 36°C (96°F) in July. Further insights are available at monthly temperature in Jersey City. Meanwhile, Atlantic City experiences slightly milder conditions, with minimum temperatures in January at -14°C (8°F) and reaching a maximum of 31°C (89°F) in the peak of summer. Detailed information can be found at monthly temperature in Atlantic City.
New Jersey experiences a relatively consistent pattern of precipitation throughout the year, with total monthly averages fluctuating between 68 mm (2.7 in) in January and up to 138 mm (5.4 in) in July. The early months of the year, particularly February and March, see increased rainfall, likely due to winter thaw and spring onset, accumulating 107 mm (4.2 in) and 103 mm (4.1 in) respectively. The transition into spring brings a notable rise in precipitation, especially in May when it peaks at 126 mm (4.9 in), signaling the arrival of robust spring thunderstorms.
As summer progresses, precipitation tends to remain elevated, with July and August recording substantial rainfall averages that reflect the influence of tropical systems. The fall months of September and October also showcase higher precipitation levels, with 99 mm (3.9 in) and 133 mm (5.2 in) respectively, as autumn storms transition out of the summer heat. Overall, New Jersey's precipitation is well-distributed, with around 10 to 13 rainy days per month during the warmer periods, providing essential moisture for the region's diverse ecosystems and agricultural landscapes.
In New Jersey, sunshine duration exhibits a clear seasonal trend, beginning with limited sunlight during the winter months. January records just 149 hours of sunshine, which gradually increases to 178 hours in February, as the state begins to shake off the winter chill. This upward trajectory continues into spring, where March sees a notable jump to 251 hours and April offers 248 hours of bright days. May further enhances this trend, averaging 281 hours, setting the stage for the sunniest season.
Summer culminates with July boasting the highest sunshine duration at 348 hours, followed closely by August with 316 hours, making these the peak months for sunlight. As the year progresses into fall, there’s a gradual decline in sunshine, with September still providing a solid 276 hours, but tapering to 227 hours in October and dropping to 215 hours by November. This seasonal variation not only highlights New Jersey's sunny summers but also emphasizes the state's winter dullness, where sunlight can be sparse, affecting everything from leisure activities to agricultural practices.
In New Jersey, the UV Index (UVI) demonstrates a distinct seasonal pattern, reflecting the state’s transition from winter to summer. During the colder months, the UVI remains relatively low, with values around 3 in January and December, and slightly higher at 5 in February. As spring approaches, the index begins to climb, reaching 6 in March and spiking to 9 in April, indicating the increasing intensity of ultraviolet radiation and a growing need for sun protection as outdoor activities resume.
The summer months witness the peak UV Index, with July and August showing maximum values of 10. This level signifies a very high risk of harm from unprotected sun exposure, making it essential for residents to take precautions, such as using sunscreen and wearing protective clothing. As autumn arrives, the UVI starts to decline, dropping to 8 in September and 7 in October, before settling back to 4 in November. This trend not only underscores the importance of monitoring UV levels throughout the year but also reflects seasonal changes that influence outdoor lifestyles and health awareness in New Jersey.
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Daylight duration in New Jersey showcases a clear seasonal rhythm, starting with relatively short days in January, where daylight lasts only 9 hours. As the state transitions into February, daylight increases to 10 hours, marking the gradual approach of spring. March brings an even more significant change, as daylight extends to 11 hours, and by April, the days are noticeably longer at 13 hours. This gradual increase culminates in May, where daylight reaches its height at 14 hours, providing ample opportunities for outdoor activities.
The trend continues through the summer months of June, July, and August, which consistently boast 14 hours of daylight, making this period ideal for enjoying the outdoors. As autumn approaches, daylight begins to wane, with September offering 12 hours and October reducing further to 11 hours. By November and December, daylight returns to 9 hours, reminiscent of the winter months. This cyclical pattern highlights how daylight duration significantly influences seasonal activities, energy use, and mood in New Jersey.
Asbury Park, located in the United States, experiences a diverse climate throughout the year. Winters are relatively cold, with January seeing average lows of -15°C (5°F) and highs reaching 18°C (64°F), accompanied by modest sunshine of around 153 hours and average precipitation of 78 mm (3.1 in). Spring and fall bring moderate temperatures with average highs ranging from 23°C (74°F) in March to 32°C (89°F) in October, coupled with varying rainfall, peaking at 153 mm (6.0 in) in October. Summer months are warm, especially July, where temperatures peak at 34°C (93°F), with significant sunshine lasting up to 353 hours and an average rainfall of 129 mm (5.1 in). For more details, you can check the Asbury Park climate.
Atlantic City experiences a diverse climate characterized by hot, humid summers and cold winters, with temperature highs reaching 31°C (89°F) in July and lows dropping to -14°C (8°F) in January. The city receives moderate precipitation throughout the year, with October being the wettest month at 152 mm (6.0 in) and June the driest at 69 mm (2.7 in). Sunshine hours peak in July with 364 hours and dip in January to 158 hours, reflecting longer days in summer months. This climate balance, influenced by its coastal location, offers a variety of seasonal activities and conditions. For more detailed information, visit Atlantic City climate.
Avalon, located in the United States, experiences a varied climate throughout the year with temperatures ranging from chilly winters to warm summers. Winter months, such as January and February, see average temperatures from 4°C (39°F) to 5°C (41°F), while summer peaks in July and August with averages between 25°C (76°F) and 25°C (77°F). Precipitation is fairly consistent, with October being the wettest month, receiving 136 mm (5.4 in) of rain. Sunshine hours increase from 158 hours in January to a peak of 362 hours in July, providing ample sunlight during the summer. For more detailed information, visit the Avalon climate page.
Barnegat Light, located in the United States, experiences a moderate climate with distinct seasonal variations. Winters are cold, with average temperatures around 3°C (38°F) in January and about 4°C (40°F) in February, accompanied by 3.1 inches of precipitation in January and higher precipitation in February at 4.7 inches. Spring ushers in a warmer ambiance, with average temperatures climbing from 6°C (43°F) in March to 15°C (60°F) in May, while sunshine increases from 260 hours in March to 307 hours in May. Summer months witness the warmest temperatures, peaking at an average of 25°C (77°F) in July with a sunshine high of 362 hours; however, precipitation is ample in August at 5.1 inches. As temperatures gradually decline into the autumn months, October remains relatively warm with an average of 17°C (63°F) and the wettest month with 6.4 inches of rainfall. Learn more about the Barnegat Light climate.
Beach Haven, United States, experiences a diverse climate with distinct seasonal variations. Winters are chilly, with average temperatures ranging from 3°C (38°F) in January to a mild 10°C (51°F) in April, and the coldest months seeing precipitation between 80 mm (3.1 in) and 130 mm (5.1 in), alongside relatively low sunshine hours. Summers are notably warmer, peaking in July with average temperatures of 25°C (77°F) and reaching highs of 32°C (90°F), accompanied by substantial sunshine averaging 361 hours in July. Autumn sees a gradual transition, retaining warmth in early months and increasing precipitation, particularly in October with 165 mm (6.5 in). For more detailed information, visit the Beach Haven climate page.
Belmar, located in the United States, experiences a varied climate with distinct seasonal changes. Winters are cold, with January temperatures ranging from -15°C (5°F) to 18°C (64°F) and precipitation averaging 78 mm (3.1 in). Summer months, particularly July, are warm, peaking at 34°C (93°F), and receive about 129 mm (5.1 in) of rain. Sunshine is abundant in the summer, with July offering around 353 hours. For more details, see the Belmar climate.
Bradley Beach experiences a varied climate throughout the year, ranging from cold winters to warm summers. Winter months, particularly January and December, see low temperatures averaging around 2°C (37°F) with moderate precipitation of about 78 mm (3.1 in) in January. The summer months bring warmer averages, peaking in July with 25°C (77°F), and significant sunshine with 353 hours recorded. Precipitation fluctuates, with October being the wettest month, receiving about 153 mm (6.0 in) of rain. For more detailed information on the weather patterns in Bradley Beach, visit the Bradley Beach climate page.
Located in the United States, Cape May experiences a moderate temperate climate characterized by warm summers and cool winters. Throughout the year, temperatures range from lows of -12°C (11°F) in January to highs of 32°C (90°F) in July, with the average annual temperatures gradually increasing from winter to summer. Precipitation varies monthly, with the wettest month being October at 142 mm (5.6 in) and lighter rainfalls in June at 77 mm (3.0 in). Sunshine hours fluctuate across the year, peaking in July with 361 hours and dipping in January with 157 hours, offering ample daylight especially during the summer months. For more detailed climate information, visit the Cape May climate page.
Dover Beaches South experiences a varied climate with mild to warm temperatures throughout the year. The coldest months are January and February, with average temperatures around 3°C (38°F) to 4°C (39°F), progressively warming to a peak in July, averaging 25°C (77°F). Winters yield moderate precipitation, with October being the wettest month at 159 mm (6.2 in). Summers are generally sunnier, peaking in July with 356 hours of sunshine. For more details on the climate, visit the Dover Beaches South climate page.
Hoboken, United States experiences a diverse climate throughout the year, with cold winters and warm summers. In winter months like January and February, temperatures can drop to a minimum of -18°C (0°F) and -16°C (4°F) respectively, while summer months such as July and August see highs of up to 36°C (96°F) and 34°C (93°F). The annual precipitation fluctuates, with July being the wettest month at 148 mm (5.8 in) of rainfall, while February and May receive considerable rainfall as well. Sunshine duration peaks in summer, reaching 339 hours in July, providing ample daylight for outdoor activities. For more detailed information on Hoboken's climate, see the Hoboken climate.
Jersey City experiences a varied climate, characterized by cold winters and warm summers. During winter months, temperatures can drop to as low as -18°C (-1°F) in January, while summer peaks in July with highs reaching 36°C (96°F). Precipitation is fairly distributed throughout the year, with July being the wettest month, recording 148 mm (5.8 in) of rain on average. Sunshine hours increase significantly from winter to summer, with the most sun in July at 339 hours. For more detailed information, visit the Jersey City climate page.
Lambertville experiences a diverse climate with cold winters and warm summers. January is the coldest month, with temperatures ranging from -17°C (2°F) to 19°C (67°F), while July is the warmest, with temperatures reaching up to 37°C (98°F). The city receives moderate precipitation throughout the year, peaking in July and August with 145 mm and 146 mm, respectively. Sunshine varies significantly, with the longest daylight hours occurring in June and July, boasting 310 and 345 sunshine hours. For more details on Lambertville's climate, visit Lambertville climate.
The climate in Long Branch, United States, showcases distinct seasonal variations with cold winters and warm summers. During January, temperatures range from -15°C to 18°C, with an average of 2°C, while July experiences the warmest weather, averaging 25°C and peaking at 34°C. Precipitation is fairly consistent throughout the year, with October being the wettest month receiving 153 mm of rainfall. Annual sunshine hours vary, peaking during June and July at 325 and 353 hours, respectively. For more detailed information, visit the Long Branch climate.
Margate City, located in the United States, experiences a diverse climate with seasonal variations in temperature, precipitation, and sunshine. Temperatures range from cold winters, with January having averages between -14°C (8°F) and 16°C (61°F), to warm summers peaking in July with averages of 19°C (66°F) to 31°C (89°F). Precipitation is fairly well-distributed throughout the year, with October experiencing the highest rainfall at 152 mm (6.0 in) and June the least at 69 mm (2.7 in). The city enjoys increasing sunshine from winter to summer, peaking in July with 364 hours and decreasing toward the end of the year. For more detailed information, you can refer to the Margate City climate.
Monmouth Beach, New Jersey experiences a varied climate throughout the year, characterized by cold winters and warm summers. In January, temperatures range from a frigid -15°C (5°F) to a mild 18°C (64°F), while July brings warmth with a minimum of 17°C (63°F) and peaks at 34°C (93°F). Monthly precipitation peaks in October at 153 mm (6.0 in) and remains relatively consistent across other months, averaging around 110 mm (4.3 in). The area enjoys abundant sunshine, especially during June and July, with 325 and 353 hours of sunshine respectively. For more detailed information, visit the Monmouth Beach climate page.
North Wildwood, located in the United States, experiences a diverse range of temperatures throughout the year, starting with cold, frosty winters where January temperatures range from a minimum of -12°C (12°F) to a maximum of 16°C (61°F). Summers are warmer, peaking in July with temperatures from 19°C (66°F) to 31°C (88°F). Precipitation is fairly evenly distributed, with October, being the wettest month, receiving 136 mm (5.4 in) of rain. Sunshine is abundant during the summer months, with July receiving up to 362 hours, contributing to the pleasant warmth typical for the season. For more details, visit the North Wildwood climate page.
Ocean City, United States experiences a diverse climate with cold winters and hot summers. Temperatures in winter months like January can drop to a brisk -14°C (8°F), while summer peaks in July at a warm 31°C (89°F). Precipitation varies throughout the year, peaking in October at 152 mm (6.0 in), accompanied by fluctuating sunshine hours that reach a maximum in July with 364 hours. The climate offers a stark contrast, where sun-drenched summers transition into cooler, wetter winters. For more detailed information, visit the Ocean City climate.
Ocean Grove, located in the United States, experiences a diverse climate with cold winters and warm summers. Winter temperatures in January and February range from a minimum of approximately -15°C (5°F) to a maximum of around 20°C (67°F), with average precipitation of 78 mm (3.1 in) to 129 mm (5.1 in) and limited sunshine between 153 to 182 hours. In contrast, summer temperatures peak in July, reaching up to 34°C (93°F), accompanied by considerable sunshine of around 353 hours, despite a notable 129 mm (5.1 in) of rainfall. The transitional spring and autumn months provide milder conditions, with varied rainfall from 102 mm (4.0 in) in September to 153 mm (6.0 in) in October, and sunshine ranging from 232 to 287 hours. For further details, visit the Ocean Grove climate.
Point Pleasant, United States, experiences a varied climate with cold winters and warm summers. January and February see temperatures ranging from a chilly -14°C (7°F/8°F) up to 17°C (63°F) and 19°C (66°F), respectively, with moderate precipitation around 77 mm (3.0 in) and 124 mm (4.9 in). Summers in July and August bring average highs of 34°C (93°F) and 31°C (89°F), accompanied by higher precipitation levels, peaking at 131 mm (5.2 in) in August. October stands out with the highest rainfall at 159 mm (6.2 in), while sunshine hours are most abundant from May through August, averaging over 300 hours. For more detailed information, visit the Point Pleasant climate.
Located in New Jersey, Point Pleasant Beach experiences a diverse climate with noticeable seasonal changes. Winters are relatively cold, with the coldest month, January, averaging temperatures from -14°C (7°F) to 17°C (63°F), and the precipitation around 77 mm (3.0 in). Summers are warm and humid, with July being the hottest month, featuring temperatures between 17°C (64°F) and 34°C (93°F), and receiving 129 mm (5.1 in) of rainfall. The area enjoys abundant sunshine, especially during the summer months, peaking in July with 356 hours. For more detailed climate information, visit the Point Pleasant Beach climate.
Princeton, United States, experiences a diverse climate, marked by cold winters and warm summers. Winter months, particularly January and February, have average temperatures of around 2-3°C (35-38°F), and receive moderate precipitation ranging from 64 mm (2.5 in) to 109 mm (4.3 in) along with limited sunshine. In contrast, summer months such as July reach average highs of 26°C (78°F), with substantial rainfall of up to 139 mm (5.5 in) and extensive sunshine lasting over 300 hours. The transitional months of spring and fall offer moderate temperatures and precipitation levels, providing a balanced climate profile throughout the year. For more details, visit Princeton climate.
Sea Isle City experiences a diverse climate characterized by cold winters and warm summers. January is the coldest month with temperatures ranging from -13°C (8°F) to 17°C (64°F), while July is the warmest, with temperatures reaching from 17°C (64°F) to 34°C (93°F). Precipitation varies throughout the year, peaking in October with 133 mm (5.3 in) and less in June with 76 mm (3.0 in). Sunshine hours also fluctuate, with July receiving the most sunshine at 362 hours, and the least in January with 158 hours. For more information, visit Sea Isle City climate.
Seaside Heights experiences a varied climate, with temperatures ranging from cold winters to warm summers. In January, temperatures can drop to -14°C (7°F), while in July, they peak at 34°C (93°F), showcasing a significant temperature variation throughout the year. The area receives substantial precipitation, averaging between 77 mm (3.0 in) in January and 159 mm (6.2 in) in October, indicating wetter conditions during spring and fall. Sunshine hours increase from winter to summer, with January receiving 153 hours, and July reaching up to 356 hours. For more details on the local climate, visit the Seaside Heights climate page.
Seaside Park experiences a varied climate with cold winters and warm, humid summers. During January, temperatures range from a chilly -14°C (7°F) to a milder 17°C (63°F), while July offers a summer peak between 17°C (64°F) and 34°C (93°F). Precipitation reaches its height in October at 159 mm (6.2 in) and is generally moderate throughout the year. The region enjoys ample sunshine, with July having the most sunny hours at 356 and December the least at 179. For more details, you can explore the Seaside Park climate.
Spring Lake, located in the United States, experiences a varied climate throughout the year, with distinct seasonal changes. Winters can be quite cold, with temperatures dipping as low as -15°C in January, accompanied by moderate precipitation of around 78 mm, and an average of 153 hours of sunshine. As spring approaches, temperatures rise, and by May, the average temperature reaches 15°C, with rain being quite frequent, totaling 129 mm alongside 287 hours of sunshine. The summer months bring warmth, peaking in July with temperatures soaring to 34°C, receiving 129 mm of precipitation and enjoying the most sunshine of the year, with 353 hours. The climate gradually cools in the fall, with October experiencing considerable rainfall of 153 mm. For more detailed information, please refer to the Spring Lake climate.
Stone Harbor, United States, experiences a diverse climate with seasonal variations. Winters are typically cold, with January temperatures ranging from a chilly -12°C (12°F) to a milder 16°C (61°F). As spring approaches, temperatures gradually rise, with April averaging 11°C (52°F), reaching up to 22°C (73°F). The summer months, particularly July, are warm, boasting average highs around 31°C (88°F) and abundant sunshine, peaking at 362 hours. Precipitation varies throughout the year, with October being the wettest month at 136 mm (5.4 in). For more detailed climate information, see the Stone Harbor climate.
Surf City experiences a diverse climate, with temperatures that range from a chilly -16°C (3°F) in January to a warm 38°C (100°F) in July. The year sees varying precipitation levels, with the driest month being January at 67 mm (2.6 in) and the wettest being August with 147 mm (5.8 in). Summertime provides ample sunshine, particularly in July, which has 361 hours, while January and December are the gloomiest months, offering just 156 and 183 hours of sunshine, respectively. For more detailed information, you can explore the Surf City climate.
Ventnor City experiences a varied climate throughout the year, with temperatures ranging from frigid lows of -14°C (8°F) in the winter to warm highs of 31°C (89°F) during the summer months. Precipitation averages vary from a low of 69 mm (2.7 in) in June to a peak of 152 mm (6.0 in) in October, indicating a relatively wet fall season. The city enjoys ample sunshine, peaking at 364 hours in July, providing long summer days contrasted with the shorter, less sunny days of December at 187 hours. These elements combine to create a diverse seasonal climate that fosters unique experiences across the year. For detailed climate information, visit Ventnor City climate.
Wildwood, United States, experiences a diverse climate with cold winters and warm summers. January is the coldest month, with average temperatures around 4°C (39°F) and a minimum low of -12°C (12°F), while July is the warmest, having an average temperature of 25°C (77°F) and highs reaching 31°C (88°F). Precipitation is fairly evenly distributed throughout the year, with October being particularly wet at 136 mm (5.4 in) and June being the driest at 68 mm (2.7 in). Sunshine hours peak in July at 362 hours before decreasing towards winter months. For detailed information on Wildwood's climate, visit Wildwood climate.
Wildwood Crest, located in New Jersey, experiences a varied climate throughout the year. Winters can be cold, with January's temperatures ranging between -12°C (12°F) and 16°C (61°F) and an average of 75 mm (3.0 in) of precipitation. Summers are warm and sunny, particularly in July, when temperatures range from 19°C (66°F) to 31°C (88°F), accompanied by approximately 362 hours of sunshine. The wettest month is October, receiving around 136 mm (5.4 in) of rainfall. For more details on local climate patterns, visit the Wildwood Crest climate page.
In conclusion, New Jersey's climate demonstrates a distinct seasonal variation that encompasses temperature, precipitation, sunshine duration, UV Index, and daylight duration. The cold winters give way to warm summers, marked by significant fluctuations in temperatures and daylight hours, while precipitation remains relatively consistent throughout the year. The peak UV Index and sunshine duration during the summer months underscore the importance of sun protection and outdoor engagement in these periods. Understanding these climatic elements not only enhances awareness of seasonal changes but also informs residents and visitors alike about how to best navigate and enjoy the diverse environmental conditions that New Jersey offers throughout the year.