Last updated: February 24, 2025
In January, Sea Isle City experiences a chilly maritime climate, with temperatures ranging from a brisk -13°C (8°F) at night to a pleasant 17°C (64°F) during the day. The monthly average temperature hovers around 3°C (38°F), providing a crisp backdrop for winter activities. Rain is a regular visitor, with 68 mm (2.7 in) falling over 9 days, contributing to the region's notable humidity of 83%. While the cool temperatures may deter some beachgoers, January offers a serene and inviting atmosphere for those looking to experience the quiet charm of this coastal town in winter.
In January, Sea Isle City experiences a chilly embrace, with temperatures ranging from a brisk -13°C (8°F) at night to a relatively mild 17°C (64°F) during the day. The average temperature hovers around 3°C (38°F), marking it as one of the colder months of the year. As the month progresses into February, there's a slight uptick in warmth, with average temperatures climbing to 5°C (41°F) and daytime highs reaching 19°C (66°F). This gradual warming trend continues into March, where the balmy highs of 24°C (75°F) signal the transition toward spring. Overall, these early winter months not only showcase frigid nights but also highlight a slow and steady rise in daily temperatures, setting the stage for the more temperate days ahead.
In January, Sea Isle City experiences a moderate precipitation level of 68 mm (2.7 in), falling over 9 days. This sets the stage for a wetter series of months ahead, with February and March seeing significant increases, reaching 102 mm (4.0 in) and 105 mm (4.1 in), respectively. As winter gives way to spring, the trend continues with April and May maintaining high precipitation averages. Interestingly, while summer months like July and August bring the highest rainfall, at 130 mm (5.1 in) and 118 mm (4.6 in), they are also characterized by more days of rainfall. This pattern suggests a shift towards heavier, more frequent showers as the year progresses, culminating in a notable peak in October with 133 mm (5.3 in), before tapering off in the cooler, drier days of late fall and winter.
In Sea Isle City, January welcomes residents and visitors with a relative humidity of 83%, marking the peak of winter moisture that sets the tone for the first month of the year. As the seasons transition into February and March, humidity slightly decreases to 82% and 81% respectively, hinting at the coming warmth of spring. However, as April emerges, there's a notable decline to 79%, with humidity continuing to drop through May, reaching 74%. Summer months see a minimal rebound in humidity, with readings of 77% in June and 76% in July, before stabilizing at 77% in August. The trend progresses into the fall with September and October showing a consistent 74% and 75%, while November and December bring a slight increase again to 80% and 81%. This fluctuation paints a vivid picture of how the coastal climate shapes the experiences of those who enjoy the beautiful seasons in this charming seaside city.
In Sea Isle City, January greets visitors with a UV Index of 3, indicating a moderate exposure level with a burn time of 30 minutes. This begins a gradual buildup of UV radiation as the seasons change. By February, the UV Index rises to 5, maintaining a moderate exposure category, but the shift becomes more pronounced by March when it escalates to 6 and a high exposure level. As spring transitions to summer, the UV Index reaches its peak of 10 from May through August, prompting a very high exposure category with a much shorter burn time of just 15 minutes. September marks a slight decline to an 8, still within the very high threshold, while October and November offer relief with 7 and 4 indices, respectively, before settling back to 3 in December. The patterns showcase a clear trajectory toward increasingly intense UV exposure as warmer months approach. For more information, check out the detailed Sea Isle City UV Index.
UV Risk Categories
In Sea Isle City, January might start the year with a modest 158 hours of sunshine, but this is just the beginning of a radiant ascent. As winter transitions into spring, the days gradually lengthen, bringing increased warmth and brightness, culminating in 272 hours by April. The sun really shines brightest during the summer months, peaking in July with an impressive 362 hours, offering plenty of opportunities for beachgoers to soak in the sun. As the season shifts into autumn, the hours of sunshine begin to taper off, with September still basking in 289 hours before the year closes with chillier 188 hours in December. This trend highlights a delightful cycle of sun-kissed days that invite visitors to experience the vibrant coastal charm of Sea Isle City throughout the year.
In January, Sea Isle City enjoys a 51% chance of sunny weather, marking it as one of the brighter months in the winter season. This likelihood is notably higher than February's 28%, but it fluctuates throughout the year, peaking in March and July at 53%. As spring approaches, the probability of sunshine remains relatively consistent, with April at 47% and May at 45%, before dipping in the summer months, particularly in August with just 34%. Interestingly, the fall months bring a return to sunnier days, culminating in November's 56%, showing a clear trend of increasing sunshine as the year progresses.
In Sea Isle City, January welcomes approximately 9 hours of daylight, marking the seasonal nadir as daylight begins its gradual return. As winter gives way to spring, daylight hours steadily increase, reaching 10 hours in February and 11 hours by March. This upward trend evolves further into April, when the days extend to 13 hours, paving the way for the vibrant beauty of spring and early summer. By May, residents enjoy a full 14 hours of daylight, a peak seen from June through July, before gradually tapering off as summer fades into autumn. As daylight diminishes to 13 hours in August and subsequently 12 hours in September, the cycle continues with a gentle decline, concluding the year with 10 hours in November and returning to 9 hours in December. This rhythmic ebb and flow of daylight not only marks the changing seasons but also enhances the locale's enchanting charm throughout the year.
In January, Sea Isle City experiences an average wind speed of 4.3 m/s (10 mph), marking the beginning of the year with a refreshing breeze. This steady flow sets the tone for the upcoming months, as wind speeds gradually increase to 4.9 m/s (11 mph) in February, the highest for the winter season. However, as spring approaches, wind speeds fluctuate slightly before settling back to 4.5 m/s (10 mph) in April. Notably, the trend shifts as the warmer months arrive, with June and July bringing the lowest speeds of the year at 3.8 m/s (9 mph) and 3.5 m/s (8 mph), respectively. As the year progresses, the winds begin to regain some strength in September, echoing the brisk pace of early winter, before tapering off again in the cooler months. This rhythmic pattern of wind throughout the year highlights the dynamic coastal atmosphere of Sea Isle City.
The weather in Sea Isle City changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Sea Isle City and find detailed weather information for every month.
In January, temperatures in Sea Isle City range from a minimum of -13°C (8°F) to a maximum of 17°C (64°F), with an average of around 3°C (38°F). The month sees approximately 68 mm (2.7 in) of precipitation over 9 days, accompanied by a humidity level of 83%. In contrast, February experiences slightly warmer conditions, with temperatures ranging from -13°C (9°F) to a maximum of 19°C (66°F) and an average of 5°C (41°F). However, precipitation increases to 102 mm (4.0 in) over 11 days, while humidity remains relatively stable at 82%. For more details on February weather, visit Sea Isle City weather in February.
Comparing the weather in January and March reveals some notable changes. In January, temperatures typically range from a minimum of -13°C (8°F) to a maximum of 17°C (64°F), with an average of 3°C (38°F). The month sees about 68 mm (2.7 in) of precipitation over 9 days, and humidity levels are relatively high at 83%. In contrast, March experiences a milder climate, with minimum temperatures around -7°C (20°F) and a maximum of 24°C (75°F), leading to an average of 7°C (45°F). Precipitation increases to 105 mm (4.1 in) over 10 days, with humidity slightly lower at 81%. For a closer look at the details of March weather, check out Sea Isle City weather in March.
In comparing the weather conditions between January and April, we see a significant shift in temperatures and precipitation patterns. January experiences a much colder climate, with an average temperature of just 3°C (38°F) and minimum lows plunging down to -13°C (8°F). In contrast, April brings a more temperate atmosphere, with average temperatures reaching 12°C (54°F) and maximum highs soaring to 27°C (81°F).
However, April also brings increased rainfall, totaling 94 mm (3.7 in) over approximately 12 days, compared to January's 68 mm (2.7 in) spread across 9 days. While humidity levels are slightly lower in April at 79%, they remain relatively high, indicating a damp spring atmosphere. For more details on April weather patterns, you can check Sea Isle City weather in April.
In January, the weather is characterized by much colder temperatures, with a minimum of -13°C (8°F) and an average of 3°C (38°F). In contrast, May brings a significant warm-up, with minimum temperatures around 4°C (40°F) and an average of 17°C (62°F), peaking at a comfortable 30°C (86°F). January sees 68 mm (2.7 in) of precipitation over 9 days, while May experiences slightly more rainfall at 112 mm (4.4 in) over 11 days, though with lower humidity at 74% compared to January's 83%. For those interested in experiencing the pleasant conditions of late spring, you can explore more about Sea Isle City weather in May.
January and June present strikingly different weather patterns, reflecting the seasonal contrasts. In January, temperatures range from a chilly -13°C (8°F) to a mild 17°C (64°F), with an average of 3°C (38°F). The month sees about 68 mm (2.7 in) of precipitation over 9 days, accompanied by high humidity at 83%. In contrast, June experiences much warmer conditions, with temperatures varying from 11°C (53°F) to a high of 31°C (89°F) and an average of 22°C (72°F). Although June has slightly more precipitation at 76 mm (3.0 in) over 10 days, the humidity is lower at 77%. For a closer look at what to expect, check out Sea Isle City weather in June.
January and July present stark contrasts in weather conditions. In January, temperatures range from a chilly -13°C (8°F) to a mild maximum of 17°C (64°F), with an average temperature of around 3°C (38°F). The month experiences about 68 mm (2.7 in) of precipitation over 9 days, with humidity levels peaking at 83%. In contrast, July boasts much warmer temperatures, with a minimum of 17°C (64°F), an average of 26°C (78°F), and highs reaching 34°C (93°F). Precipitation increases to 130 mm (5.1 in) spread over 11 days, but humidity is lower at 76%. For a closer look at the warmer month, check out the details on Sea Isle City weather in July.
January and August present starkly contrasting weather conditions. In January, temperatures can dip as low as -13°C (8°F), with an average around 3°C (38°F) and a maximum of 17°C (64°F). The winter month also sees considerable precipitation, totaling 68 mm (2.7 in) over about 9 days, accompanied by high humidity at 83%. In contrast, August boasts much warmer temperatures, with a minimum of 17°C (64°F), an average of 25°C (77°F), and a peak reaching 32°C (90°F). While the summer month experiences increased precipitation at 118 mm (4.6 in) over 15 days, humidity is slightly lower at 77%. For more details about August weather, you can explore Sea Isle City weather in August.
January and September present strikingly different weather patterns. In January, temperatures can dip as low as -13°C (8°F) and typically hover around an average of 3°C (38°F), with a maximum of 17°C (64°F). The month experiences about 9 days of precipitation, totaling 68 mm (2.7 in), and humidity levels are quite high at 83%. In contrast, September enjoys much warmer temperatures, with a minimum of 11°C (53°F) and an average of 22°C (72°F), peaking at 31°C (88°F). While it sees slightly more precipitation at 113 mm (4.4 in) over 10 days, the humidity drops to 74%. For a more detailed look at September weather specifics, check out Sea Isle City weather in September.
January and October present contrasting weather experiences. In January, temperatures can plummet as low as -13°C (8°F), with an average of 3°C (38°F) and a maximum reaching 17°C (64°F). The month is characterized by high humidity at 83%, and it typically sees about 68 mm (2.7 in) of precipitation over 9 days. In stark contrast, October boasts milder conditions, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 31°C (88°F), and an average of 17°C (63°F). Although October has slightly lower humidity at 75%, it experiences more precipitation overall, measuring 133 mm (5.3 in) over just 8 days. For a deeper dive into October's climate, you can check out Sea Isle City weather in October.
January and November present markedly different weather experiences. In January, temperatures range from a chilly -13°C (8°F) to a mild 17°C (64°F), averaging around 3°C (38°F). The month sees about 68 mm (2.7 in) of precipitation over 9 days, coupled with relatively high humidity at 83%. In contrast, November enjoys a broader temperature range, with minimums of -6°C (22°F) and maximums reaching 22°C (72°F), averaging 10°C (50°F). Although it receives slightly more precipitation at 81 mm (3.2 in) over just 7 days, the humidity is marginally lower at 80%. For more detailed insights, check out Sea Isle City weather in November.
In comparing the weather of January and December, January tends to be slightly colder with average temperatures around 3°C (38°F), while December's average is a bit warmer at 6°C (43°F). January experiences a minimum temperature of -13°C (8°F), compared to December's minimum of -9°C (16°F). Precipitation levels are also notable: January sees about 68 mm (2.7 in) over 9 days, whereas December has higher precipitation at 108 mm (4.2 in) over 10 days. The humidity remains similar, with January at 83% and December at 81%. For more specific insights about December's weather, you can check Sea Isle City weather in December.
January weather in Sea Isle City is notably crisp and chillier than the more temperate months, providing a stark contrast to the warmth of summer. With an average temperature hovering around 3°C (38°F), the month experiences brisk days and cold nights, occasionally dipping to -13°C (8°F). While precipitation is moderate at 68 mm, the winter atmosphere is frequently accompanied by 83% humidity, making it feel even cooler. This blend of cold temperatures and occasional wet weather creates a unique winter experience, ideal for those looking to escape the hustle of busier tourist seasons. For a deeper dive into seasonal variations and what to expect throughout the year, visit Sea Isle City Climate.