Last updated: February 24, 2025
April weather in Port Jefferson, United States showcases a dynamic range of temperatures as the town transitions into spring. The maximum temperature peaks at a pleasant 22°C (71°F), while the average settles at 9°C (49°F), and the minimum dips to a chilly -1°C (31°F). Along with diverse temperatures, April brings 132 mm (5.2 in) of rain over 12 days, contributing to the vibrant, lush landscapes characteristic of the season. With an average humidity level of 78%, residents and visitors alike can expect a mix of refreshingly cool and occasionally damp days perfect for embracing the arrival of spring.
April in Port Jefferson marks a notable transition from the chill of winter to the warmth of spring. With temperatures ranging from a crisp -1°C (31°F) at night to a pleasant 22°C (71°F) during the day, the month offers a significant uplift in warmth compared to the preceding seasons. The average temperature of 9°C (49°F) reflects a comforting shift, inviting locals and visitors alike to enjoy the blossoming scenery. As the landscape emerges from winter's grip, days grow longer and sunnier, heralding the approach of summer and providing the perfect backdrop for outdoor activities and exploration. This month sets the stage for increasingly warmer temperatures, creating an exciting atmosphere of renewal and vitality.
April marks a notable increase in precipitation in Port Jefferson, with 132 mm (or 5.2 inches) of rainfall spread across 12 days. This uptick follows a soggy March and signals the height of the spring season, where blossoming flora thrives in response to the revitalizing showers. Notably, April’s precipitation is the highest for the first four months of the year, outpacing January’s 80 mm and February’s 112 mm. As the weather transitions into warmer months, this sustained pattern of rain prepares the landscape for the lush greenery of May, which averages 119 mm, thus establishing a trend of increasingly wetter conditions that characterize early spring in this charming coastal community.
As April arrives in Port Jefferson, the humidity begins to ease, dropping to 78% from the higher levels experienced in the earlier months. This is a noticeable decline from January's 84% and February's 82%, setting the stage for a more comfortable spring. The consistent decrease in humidity from March to April indicates a transition towards drier conditions, which continues as May sees a further reduction to 69%. This trend highlights April as a month of refreshing change, where residents can enjoy milder, more pleasant atmospheric conditions as they delve into the vibrant outdoor activities that spring brings.
As spring unfolds in Port Jefferson, April ushers in a significant rise in UV exposure, with the UV Index reaching 8, categorized as very high. This sharp increase from the previous months reflects a trend where the sun's intensity builds as we transition toward summer. In fact, while January and February had moderate indices of 3 and 5 respectively, March already jumped to 6, indicating a shift in sunlight strength. With a burn time of just 15 minutes in April, it's crucial for residents and visitors to take proactive sun safety measures, especially as we look forward to May's even higher index of 10. To understand more about the UV conditions throughout the year, explore Port Jefferson UV Index.
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As April graces Port Jefferson, the days are characterized by a delightful 246 hours of sunshine, a slight dip from the sun-drenched days of March. This transitional month marks a notable shift as spring begins to unfold, paving the way for brighter times ahead. Following January's modest 154 hours, each subsequent month reveals a consistent upward trend, culminating in the sunniest months of July and August, which boast 343 and 323 hours respectively. By April, residents begin to relish longer daylight hours, setting the stage for the vibrant summer days that lie ahead. The gradual increase in sunshine hours through the early months of the year not only brightens the streets but also lifts spirits, affirming the arrival of spring's warm embrace in this charming coastal town.
April in Port Jefferson brings a 48% chance of sunny weather, a slight dip from the more promising March, which boasts a 58% likelihood of sunshine. As winter transitions to spring, the month showcases a fluctuating pattern, with sunshine chances generally hovering around the mid to low 40s in the following months. This trend suggests that while April might not offer the sunniest days of the year, it still competes well with its surrounding months. Notably, this month's sunny potential outshines both February's 31% and August's 32%, indicating that spring is indeed a hopeful time for those looking to soak up the sun in Port Jefferson.
As April arrives in Port Jefferson, the days noticeably grow longer, with daylight reaching 13 hours—a significant increase from the 11 hours of March. This transition marks a shift towards sunnier days, not only enhancing the vibrancy of the landscape but also inviting residents and visitors alike to enjoy outdoor activities. Following this upward trend, May promises even more light, with 14 hours of daylight, continuing the surge towards the peak summer months. The steady increase from January’s 9 hours to April’s 13 signifies the approach of spring, blossoming with more opportunities for adventure under the sun.
In April, Port Jefferson experiences a gentle breeze with an average wind speed of 4.4 m/s (10 mph), marking a slight decrease from the previous months. As winter gives way to spring, the winds begin to mellow, creating a refreshing atmosphere for outdoor activities. This trend of diminishing wind speeds continues into May and June, where average speeds dip further to 4.3 m/s (10 mph) and 3.9 m/s (9 mph), respectively. The transition reflects the arrival of warmer weather, inviting residents and visitors to enjoy the coastal charm of the area. Interestingly, while the spring months tend towards calmer winds, the speeds pick up again in September and October, suggesting a seasonal pattern that hints at invigorating fall breezes. This dynamic interplay of wind throughout the year not only shapes the local climate but also enhances the unique character of Port Jefferson's natural landscape.
The weather in Port Jefferson changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Port Jefferson and find detailed weather information for every month.
April and January present contrasting weather patterns, with April enjoying milder temperatures and higher rainfall. In April, temperatures range from a minimum of -1°C (31°F) to a pleasant maximum of 22°C (71°F), averaging around 9°C (49°F). This month sees about 132 mm (5.2 in) of precipitation over approximately 12 days, alongside a humidity level of 78%. In stark contrast, January is much colder, with temperatures plummeting to a minimum of -15°C (6°F) and reaching a maximum of 15°C (60°F), averaging just 2°C (35°F). While January receives less precipitation at 80 mm (3.1 in) over 8 days, it maintains a higher humidity level of 84%. For those interested in a more detailed look at January weather, check out Port Jefferson weather in January.
April and February exhibit distinct differences in weather patterns. In April, temperatures range from a minimum of -1°C (31°F) to a maximum of 22°C (71°F), with an average of 9°C (49°F). Contrastingly, February features much colder temperatures, with a minimum of -15°C (6°F), an average of 2°C (36°F), and a maximum of 15°C (58°F). Although both months receive around 12 days of precipitation, April sees a greater total, with 132 mm (5.2 in) compared to February’s 112 mm (4.4 in). Humidity levels are also slightly higher in February at 82%, while April has a humidity of 78%. For more specific details about February weather, you can check the following link: Port Jefferson weather in February.
April generally sees milder temperatures compared to March, with minimums rising from -8°C (17°F) in March to -1°C (31°F) in April. The average April temperature reaches 9°C (49°F), a notable increase from March's average of 4°C (40°F). Maximum temperatures also climb, peaking at 22°C (71°F) in April compared to 19°C (67°F) in March. In terms of precipitation, April is slightly wetter, with 132 mm (5.2 in) recorded over 12 days, compared to March’s 104 mm (4.1 in) over 10 days. The humidity remains relatively stable, with April at 78% and March slightly higher at 81%. For more details on March weather, you can check Port Jefferson weather in March.
April and May present a noticeable shift in weather patterns. In April, temperatures can dip to a minimum of -1°C (31°F), with an average of 9°C (49°F) and a maximum of 22°C (71°F). The month is marked by relatively high precipitation, totaling 132 mm (5.2 in) over 12 days, contributing to a humid environment at 78%. In contrast, May warms considerably, starting at a minimum of 3°C (37°F) and peaking at 26°C (79°F), with an average temperature of 14°C (58°F). Although May experiences a slightly lower total precipitation of 119 mm (4.7 in) over 13 days, humidity decreases to 69%, offering a more comfortable climate. For more details, visit Port Jefferson weather in May.
April and June exhibit distinct differences in weather patterns. April sees cooler temperatures, ranging from a chilly minimum of -1°C (31°F) to a comfortable maximum of 22°C (71°F), with an average temperature of 9°C (49°F). In contrast, June warms up considerably, with temperatures starting at 10°C (50°F) and peaking at a balmy 29°C (85°F), averaging around 20°C (68°F). Additionally, April experiences higher precipitation, totaling 132 mm (5.2 in) over about 12 days, compared to June's 87 mm (3.4 in) spread across 9 days. Humidity levels are also higher in April at 78%, while June enjoys a lower humidity level of 69%. For more details on June weather in Port Jefferson, you can check Port Jefferson weather in June.
April and July present strikingly different weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant maximum of 22°C (71°F), with an average of 9°C (49°F). This month experiences a significant amount of precipitation, totaling 132 mm (5.2 inches) over 12 days, coupled with a high humidity level of 78%. In contrast, July boasts much warmer temperatures, with a minimum of 16°C (60°F), an average of 24°C (76°F), and a maximum reaching 33°C (91°F). Interestingly, it also receives approximately 131 mm (5.2 inches) of precipitation over the same number of days, but with lower humidity at 62%. For further details on July weather, you can visit Port Jefferson weather in July.
April weather is characterized by cooler temperatures, with a minimum of -1°C (31°F) and an average of 9°C (49°F), reaching a maximum of 22°C (71°F). This month experiences significant precipitation, totaling 132 mm (5.2 in) over about 12 days, contributing to a higher humidity level of 78%. In contrast, August brings warmer conditions, with temperatures ranging from a minimum of 16°C (61°F) to an average of 24°C (75°F), peaking at a maximum of 31°C (88°F). Precipitation is slightly lower at 103 mm (4.0 in) over 11 days, and humidity decreases to 65%. For more detailed information, you can refer to the Port Jefferson weather in August.
April and September present contrasting weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant maximum of 22°C (71°F), with an average of 9°C (49°F). This month is characterized by higher precipitation, totaling 132 mm (5.2 in) over 12 days, and a relatively humid atmosphere at 78%. In contrast, September boasts warmer temperatures, with a minimum of 11°C (52°F), an average of 21°C (70°F), and a maximum reaching 30°C (87°F). The month experiences less rain, measuring 94 mm (3.7 in) over 10 days, and a decrease in humidity to 68%. For a detailed look at the September climate, you can check Port Jefferson weather in September.
April and October present quite distinct weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a maximum of 22°C (71°F), averaging around 9°C (49°F). The month is characterized by significant precipitation, totaling 132 mm (5.2 in) over about 12 days, accompanied by a relatively high humidity of 78%.
In contrast, October experiences milder temperatures, with a minimum of 5°C (41°F) and a maximum of 29°C (84°F), leading to an average of 16°C (61°F). Although October sees slightly higher precipitation at 143 mm (5.6 in), it shares the same number of rainy days, 12, with slightly lower humidity at 74%.
For more detailed information, check out Port Jefferson weather in October.
April and November showcase intriguing similarities and differences in their weather patterns. Both months have an average temperature of 9°C (49°F), but April generally experiences warmer maximum temperatures, peaking at 22°C (71°F), compared to November's maximum of 21°C (70°F). In April, temperatures can dip as low as -1°C (31°F), while November sees colder minimums reaching -6°C (21°F). Precipitation in April is slightly higher, totaling 132 mm (5.2 in) over 12 days, compared to November's 103 mm (4.0 in) over 9 days. Notably, humidity levels are slightly elevated in November at 82% versus 78% in April. For more details, you can check Port Jefferson weather in November.
April and December present notably different weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant maximum of 22°C (71°F), with an average of 9°C (49°F). The month sees a fair amount of precipitation, totaling 132 mm (5.2 in) over approximately 12 days, coupled with a humidity level of 78%. Conversely, December brings colder conditions, with temperatures dipping to a minimum of -10°C (15°F) and peaking at a milder 17°C (62°F), resulting in an average of 5°C (40°F). Precipitation in December is slightly higher at 140 mm (5.5 in), though occurring over just 11 days, and humidity rises slightly to 80%. For a more detailed look at December weather, you can visit Port Jefferson weather in December.
As April unfolds in Port Jefferson, the weather begins to shift dramatically from the chill of winter to the refreshing arrival of spring. Temperatures see a noticeable rise, offering days that can peak at a comfortable 22°C (71°F), contrasting starkly with the lingering chill of early months. However, this transition is accompanied by increased humidity levels and a fair share of rain, marking it as one of the wetter months with around 132 mm (5.2 in) of precipitation. With approximately 12 days of rain, residents are reminded that April's showers are essential for the lush blooms that follow. For a more detailed understanding of the weather patterns throughout the year, explore the complete Port Jefferson Climate for insights into how the climatic conditions shape this beautiful coastal town.