Last updated: February 24, 2025
In May, Port Jefferson, United States experiences a delightful transition into warmer weather. The maximum temperature reaches a pleasant 26°C (79°F), while an average temperature of 14°C (58°F) provides a refreshing milder climate. Early spring's chill is evident with a minimum temperature of 3°C (37°F). Expect occasional showers, as 13 days of precipitation contribute to a total of 119 mm (4.7 in), nurturing the vibrant local flora. The humidity hovers around 69%, adding a gentle warmth to the air, perfect for enjoying outdoor activities while embracing the beauty of nature’s awakening.
May in Port Jefferson marks a delightful transition into warmer weather, showcasing a notable rise in temperatures as spring advances toward summer. The month begins with a minimum temperature of 3°C (37°F), while the average climbs to a comfortable 14°C (58°F), peaking at 26°C (79°F)—all significant increases from the chillier months preceding it. As the days grow longer, residents and visitors alike can enjoy outdoor activities, basking in the gentle warmth that sweeps over the region. This month not only hints at the joys of summer ahead but also forms a pivotal point in the seasonal temperature trend, bridging the coolness of spring with the vibrant heat of summer.
In Port Jefferson, May brings a refreshing touch of moisture with an average precipitation of 119 mm (4.7 in), marking it as one of the wetter months of the year. With about 13 days of rain, the landscape flourishes, painting the scenery in vibrant green hues, thanks to the consistent rainfall that supports plant growth. Following the drier stretches of winter and early spring, this increase in precipitation reflects a gradual shift towards the more humid summer months, specifically June's anticipated dip to 87 mm (3.4 in). Thus, May serves not only as a bridge between seasons but also as a reminder of nature's rhythm, letting the residents of Port Jefferson relish in the beauty of early summer's bloom while preparing for the sunnier and drier days ahead.
In Port Jefferson, United States, the month of May marks a notable shift in humidity levels, dropping to 69% from the higher averages seen in the earlier months of the year. This reduction illustrates a welcoming transition into summer, where the humidity remains stable at 69% in June as well. The shift from 84% in January to a more comfortable 69% in May highlights a steady decline, creating a more pleasant atmosphere as the region moves toward warmer weather. As the year progresses, humidity continues to fluctuate, with the summer months generally seeing lower percentages—culminating at 62% in July—before rising again in the fall. This seasonal pattern not only enhances the overall climate in May but also sets the stage for the blissful days of summer ahead.
As we transition into May, Port Jefferson experiences a significant spike in the UV Index, reaching 10, which falls into the very high exposure category. This noticeable increase from April's index of 8 underscores the importance of sun safety, as the burn time decreases to just 15 minutes. This trend of rising UV levels continues into June, where the index remains at 10, reminding residents and visitors alike to stay vigilant against harmful UV rays. The peak summer months keep the UV index notably high, with July and August also hovering around 9, making it crucial to take protective measures during outdoor activities. For an in-depth look at the UV Index throughout the year, including expert tips on protection, visit Port Jefferson UV Index.
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May in Port Jefferson ushers in a delightful surge of sunshine, with an impressive 285 hours of radiant light basking the town. This bright month not only surpasses the previous April's 246 hours, but it also sets the stage for a gradual climb to summer, where June enjoys an even greater 319 hours. As the months progress towards the peak sunshine of July at 343 hours, May stands out as a vibrant transition, filling the days with warmth and encouraging residents and visitors alike to embrace the outdoors. The data clearly illustrates a growing trend of longer days and abundant sunshine as the season unfolds, painting a promising picture for the summer months ahead.
In Port Jefferson, the likelihood of sunny weather in May stands at 43%, reflecting a slight dip compared to the preceding months of March and April, which enjoy 58% and 48% chances, respectively. This trend indicates that while May brings the promise of warmer days, it is not the sunniest month, as it falls just slightly below the annual average sunshine chances. Interestingly, as the year progresses into the summer months, the likelihood of sunny weather remains relatively stable in June and July at 41%, suggesting that residents and visitors can expect a moderately sunny spring compared to the more variable conditions seen in earlier months like January, which starts at a promising 52%. Overall, while May may not shine the brightest in terms of sunshine, it offers a pleasant transition into the sunnier days of summer.
As spring transitions into summer in Port Jefferson, the daylight duration experiences a steady and uplifting increase. In May, residents bask in 14 hours of sunlight, marking a vibrant peak in the season's growth and activity. This upward trend from the 10 hours of daylight in February demonstrates nature's awakening, culminating at 15 hours in June. As summer unfolds, daylight begins to slightly taper off, with July still enjoying ample sunlight at 14 hours. However, the overall trajectory from winter's short 9 hours in January to the exuberant May highlights not only a seasonal shift but also a rejuvenation of energy and opportunities for outdoor pursuits throughout this beautiful coastal gem.
In May, Port Jefferson experiences a gentle breeze with an average wind speed of 4.3 m/s (10 mph), marking a subtle decline from the preceding months. This trend of diminishing wind velocity persists into the summer, as June sees the winds further decrease to 3.9 m/s (9 mph). The early months of the year showcase a much brisker atmosphere, with January and February holding steady at 5.0 m/s (11 mph). As spring unfolds, however, the winds soften, creating a more tranquil environment that complements the blooming scenery. This pattern suggests a seasonal transition from the lively gusts of winter towards the calmer, warmer days of summer, inviting residents and visitors alike to enjoy the serene ambiance of the coastal town.
The weather in Port Jefferson changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May'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.
In May, temperatures in Port Jefferson begin to warm up, ranging from a minimum of 3°C (37°F) to a maximum of 26°C (79°F), with an average of 14°C (58°F). The month sees an average precipitation of 119 mm (4.7 inches) over approximately 13 days, accompanied by a moderate humidity level of 69%. In contrast, January offers a much colder climate, with temperatures dropping significantly to a minimum of -15°C (6°F), an average of 2°C (35°F), and a maximum of 15°C (60°F). Although January experiences less precipitation at 80 mm (3.1 inches) over about 8 days, the humidity is notably higher at 84%. This comparison highlights the stark seasonal differences in temperature and weather patterns between the two months. For more detailed information about January weather, visit Port Jefferson weather in January.
In comparing the weather between May and February, it's clear that May brings more moderate temperatures, with an average of 14°C (58°F) and a maximum of 26°C (79°F), while February tends to be much colder, featuring an average of just 2°C (36°F) and lows dropping to -15°C (6°F). Precipitation levels are similar, with May receiving 119 mm (4.7 in) over about 13 days and February slightly less with 112 mm (4.4 in) across 12 days. Additionally, February's humidity is higher at 82%, compared to May's 69%, making the early spring month feel considerably more comfortable. For more details about February weather, you can visit Port Jefferson weather in February.
In comparing the weather between March and May, it's evident that May offers significantly warmer temperatures, with averages soaring to 14°C (58°F) compared to March's average of just 4°C (40°F). While March can experience chilly minimums as low as -8°C (17°F), May's temperatures rarely dip below 3°C (37°F). Precipitation levels are fairly similar, with May receiving 119 mm (4.7 in) over 13 days, while March sees slightly less at 104 mm (4.1 in) over 10 days. Interestingly, March has a higher humidity rate of 81%, compared to May's 69%, suggesting a more comfortable feel as spring arrives. For more detailed insights on March weather, you can check Port Jefferson weather in March.
May generally offers more pleasant temperatures compared to April, with averages rising from 9°C (49°F) in April to 14°C (58°F) in May. While both months experience a similar amount of precipitation—119 mm (4.7 in) in May versus 132 mm (5.2 in) in April—May sees slightly lower humidity levels at 69% compared to April's 78%. This shift in weather makes May feel drier and more comfortable, especially as maximum temperatures reach up to 26°C (79°F), compared to April's peak of 22°C (71°F). For a more detailed look at how the weather unfolds in April, check out Port Jefferson weather in April.
When comparing the weather in May and June, we see a notable warming trend. May features a broader temperature range with minimums dropping to 3°C (37°F), while average highs reach up to 26°C (79°F). In contrast, June presents a milder climate, with minimum temperatures starting at 10°C (50°F) and maximums rising to 29°C (85°F). Additionally, June experiences less precipitation, totaling 87 mm (3.4 in) over 9 days, compared to May's 119 mm (4.7 in) across 13 days. Despite both months sharing the same average humidity of 69%, the overall conditions in June lean towards warmer and drier, making it a more pleasant time for outdoor activities. For more detailed insights, you can check Port Jefferson weather in June.
In May, temperatures start off cooler, with a minimum of 3°C (37°F) and an average of 14°C (58°F), while July experiences much warmer conditions, with a minimum temperature of 16°C (60°F) and an average of 24°C (76°F). The maximum temperatures in May can reach 26°C (79°F), contrasting with July’s higher peak at 33°C (91°F). Precipitation is quite similar, with May receiving 119 mm (4.7 in) over 13 days and July slightly wetter at 131 mm (5.2 in) over 12 days. Additionally, humidity is higher in May at 69%, compared to July’s 62%, making July feel more comfortable despite the increased temperatures. For more details, check out Port Jefferson weather in July.
May and August present quite different weather characteristics. In May, temperatures range from a chilly 3°C (37°F) at night to a warm 26°C (79°F) during the day, with an average of 14°C (58°F). This month also experiences higher precipitation, totaling 119 mm (4.7 in) over 13 days, coupled with a relatively high humidity of 69%. In contrast, August enjoys milder nighttime temperatures, starting at 16°C (61°F), peaking at a comfortable 31°C (88°F) during the day, and averaging 24°C (75°F). Precipitation in August is slightly lower at 103 mm (4.0 in) over just 11 days, with a marginally lower humidity of 65%. For more specific details on August weather, you can check Port Jefferson weather in August.
May and September present quite different weather profiles. In May, temperatures range from a chilly 3°C (37°F) to a warm 26°C (79°F), with an average of 14°C (58°F). The month sees considerable precipitation of 119 mm (4.7 in) over about 13 days, making it a relatively damp month with humidity levels at 69%. In contrast, September offers a milder and more stable climate, with temperatures ranging from a comfortable 11°C (52°F) to a warm 30°C (87°F), averaging 21°C (70°F). Precipitation decreases to 94 mm (3.7 in) over just 10 days, accompanied by a slightly lower humidity at 68%. For more details, check out Port Jefferson weather in September.
In May, temperatures range from a minimum of 3°C (37°F) to a maximum of 26°C (79°F), with an average of 14°C (58°F). The month experiences about 119 mm (4.7 in) of precipitation over 13 days, and humidity sits at around 69%. In contrast, October sees slightly warmer temperatures, with a minimum of 5°C (41°F) and a maximum of 29°C (84°F), averaging 16°C (61°F). Precipitation increases to 143 mm (5.6 in) over 12 days, and humidity rises to 74%. For a closer look at the weather specifics during October, you can check Port Jefferson weather in October.
May and November present contrasting weather conditions. In May, temperatures range from a mild 3°C (37°F) at night to a warm 26°C (79°F) during the day, with an average of 14°C (58°F). The month experiences 119 mm (4.7 in) of precipitation over 13 days, accompanied by a comfortable humidity level of 69%. In stark contrast, November features colder temperatures, with a minimum of -6°C (21°F) and a maximum of 21°C (70°F), averaging around 9°C (49°F). This month sees slightly less precipitation at 103 mm (4.0 in) spread over 9 days and higher humidity at 82%. For a detailed look at November weather specifics, visit Port Jefferson weather in November.
The weather in May and December shows a stark contrast in temperature and conditions. May typically experiences a milder climate, with average temperatures ranging from a low of 3°C (37°F) to a high of 26°C (79°F), accompanied by occasional rainfall totaling 119 mm (4.7 inches) over 13 days and a humidity level of 69%. In contrast, December brings colder temperatures, with averages ranging from -10°C (15°F) to a high of just 17°C (62°F). Precipitation in December is slightly higher at 140 mm (5.5 inches) but occurs over fewer days (11 days), and the humidity peaks at 80%, contributing to a chilly atmosphere. For more details on December's weather, you can visit Port Jefferson weather in December.
As May arrives, Port Jefferson experiences a notable transition from the cooler months, embracing warmer temperatures that enhance outdoor activities. While the days are generally pleasant, bringing a refreshing average of 14°C (58°F), the chance of occasional rain remains with around 13 days of precipitation throughout the month. This moderate humidity of 69% contributes to a vibrant landscape, perfect for blooming flowers and outdoor gatherings. Compared to the chillier climates of early spring, May invites visitors to enjoy the beauty of the season, making it a delightful time to explore the charm of this coastal village. For more details on what to expect throughout the year, check out Port Jefferson Climate.