Last updated: February 24, 2025
In May, Wellfleet, United States experiences a refreshing transition into warmer weather, with maximum temperatures reaching 18°C (65°F) and an average of 11°C (51°F). Morning lows can dip to 4°C (40°F), offering a crisp start to the day. The month brings a notable 106 mm (4.2 in) of precipitation, spread across 11 days, contributing to the region's lush greenery. With an average humidity of 75%, the coastal charm of Wellfleet is accentuated, creating an invigorating ambiance perfect for exploring its beautiful landscapes.
As May rolls into Wellfleet, the temperatures begin to rise, signaling the vibrant transition into warmer months. The average temperature climbs to 11°C (51°F), with daytime highs reaching a pleasant 18°C (65°F), inviting locals and visitors alike to enjoy outdoor activities. Mornings are crisp, with minimum temperatures around 4°C (40°F), offering a refreshing start to the day before the sun warms the coast. Compared to the chill of earlier months, May brings a noticeable increase in warmth, setting the stage for the summer heat to follow in June. This gradual warming trend not only enhances the natural beauty of Wellfleet but also encourages exploration of its stunning landscapes and charming seaside atmosphere.
In May, Wellfleet experiences a notable shift in precipitation patterns as the spring season transitions toward summer. With 106 mm (4.2 in) of rain spread over 11 days, May offers a moderate amount of moisture, which is slightly lower than April's 130 mm (5.1 in). This reduction aligns with a typical trend where rainfall begins to decrease as warmer months approach. Interestingly, May’s precipitation is higher than the upcoming summer months, indicating that the region is still benefitting from spring rains before the drier conditions of June and July set in. Overall, while May retains a fair share of rainfall, it marks the beginning of a gradual decline leading into the sunnier days of summer.
In Wellfleet, United States, the humidity in May typically hovers around 75%, showing a gradual decline from the wetter months of winter and early spring. This decrease marks a shift towards the milder and more comfortable conditions that characterize late spring, making it an inviting time for outdoor activities. As the months progress into summer, a slight uptick in humidity occurs, with June peaking at 78%, but it remains notably lower than the winter values, which languish around 84% in January and February. The overall trend indicates a transition from the moist chill of winter to the drier warmth of summer, establishing May as a pleasant midpoint for those seeking a balance of sunshine and manageable humidity.
As May rolls into Wellfleet, the UV Index climbs to an impressive 9, marking it as a period of very high sun exposure. This increase in UV radiation underscores the importance of proactive sun protection, as your burn time drops sharply to just 15 minutes. This trend of rising UV levels is evident from the previous month, where the index was already elevated at 8. Following the typically low indices in winter months, this sharp rise in spring signals that outdoor enthusiasts should prepare for intense sun conditions as the summer approaches. Don’t forget to check your sun safety tactics during this vibrant month. Stay informed about UV levels at Wellfleet UV Index to enjoy the outdoors safely.
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May in Wellfleet shines brightly with an impressive 293 hours of sunshine, marking a delightful transition into the summer months. This surge in sunlight is part of a clear upward trend, beginning from a modest 136 hours in January and steadily climbing each month. After a peaceful spring, May's increasing warmth sets the stage for June's peak, where residents and visitors alike can bask in 322 hours of sunlight. The sun's abundant presence not only enhances the charm of Wellfleet's coastal beauty but also invigorates outdoor activities, inviting everyone to embrace the vibrant atmosphere of late spring. As summer approaches, the brightness grows more pronounced, creating a perfect backdrop for unforgettable experiences by the shore.
As spring blooms in Wellfleet, the likelihood of sunny weather in May shows a promising 42% chance of sun. This figure is slightly below the 54% peak witnessed in March but reflects a steady climate trend as May transitions from the cooler months of January and February, which see only 32% and 25% sunshine, respectively. The beginning of summer introduces a dip in sunshine chances, with June at 39%, indicating that while May may not boast the brightest days of the season, it still offers a welcomed respite with relatively consistent sunny spells compared to the colder months. Overall, May presents a favorable opportunity for outdoor activities, bridging the gap between the invigorating spring and the sun-drenched summer ahead.
As May rolls into Wellfleet, daylight reaches an inviting 14 hours—the longest of the spring season. This month marks a significant transition, with sunlight increasing steadily from 9 hours in January to 11 hours in March and then expanding to 13 hours in April. The progression to May highlights a vibrant shift as nature awakens, encouraging longer outdoor adventures and community gatherings. Following May, daylight begins to gradually taper off in the summer, demonstrating a dynamic rhythm of light that shapes the character of each season. As June brings a peak of 15 hours of daylight, May stands out as a bridge between the refreshing energy of spring and the golden abundance of summer, beckoning residents to savor every moment under the sun.
In May, Wellfleet experiences a gentle shift in its wind patterns, with an average speed of 6.4 m/s (14 mph). This marks a notable decline from the brisker winds of the earlier months—January through April—where speeds hovered above 7.1 m/s (16 mph). As spring blooms, the winds soften, transitioning from the robust breezes of winter to a more delicate touch, setting the stage for the upcoming summer months. Interestingly, wind speeds in May are lower compared to previous months, yet show a pattern that suggests a gradual decline over the course of spring, ultimately leading into the calmer summer experience that continues through July and August.
The weather in Wellfleet 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 Wellfleet and find detailed weather information for every month.
May and January present stark contrasts in weather. In May, temperatures range from a minimum of 4°C (40°F) to a pleasant average of 11°C (51°F), peaking at a comfortable 18°C (65°F). The month sees moderate precipitation at 106 mm (4.2 in) over approximately 11 days, with humidity sitting at 75%. In contrast, January experiences much colder conditions, with temperatures dropping as low as -12°C (11°F) and averaging 2°C (37°F), reaching a maximum of 12°C (54°F). Although January has slightly less precipitation at 95 mm (3.7 in) over the same number of days, humidity is higher at 84%. This clear difference in temperatures and overall climate makes May a much more inviting month compared to the chill of January. For more details, you can check Wellfleet weather in January.
When comparing May and February weather, one can observe significant differences in temperature and conditions. In May, temperatures begin to warm up, with an average low of 4°C (40°F) and a high of 18°C (65°F), while February features much colder temperatures, averaging from a low of -11°C (13°F) to a high of 12°C (53°F). February also sees slightly more precipitation, with 117 mm (4.6 in) over 12 days, compared to May's 106 mm (4.2 in) over 11 days. Additionally, February has higher humidity at 84% compared to May's 75%. For more insights into February conditions, you can check out Wellfleet weather in February.
In comparing the weather between March and May, we see significant differences in temperature and conditions. May experiences milder temperatures, ranging from a minimum of 4°C (40°F) to a maximum of 18°C (65°F), with an average of 11°C (51°F). In contrast, March is noticeably colder, with temperatures dropping as low as -8°C (17°F) and peaking at 12°C (54°F), averaging just 3°C (38°F). While both months feature 11 days of precipitation, May has slightly lower rainfall at 106 mm (4.2 in) compared to March's 119 mm (4.7 in). Additionally, March tends to be more humid at 82%, compared to May's 75%. For more details on March weather, you can check Wellfleet weather in March.
When comparing the weather of May and April, we see a noticeable improvement in temperatures. May boasts a minimum temperature of 4°C (40°F) and an average of 11°C (51°F), while April starts lower with a minimum of 0°C (33°F) and an average of 7°C (44°F). The maximum temperature in May reaches 18°C (65°F), a comfortable increase from April's maximum of 14°C (58°F). However, April experiences slightly more rainfall, with 130 mm (5.1 in) over 12 days compared to May's 106 mm (4.2 in) over 11 days. Humidity levels are also slightly higher in April at 79%, compared to 75% in May. For a closer look at monthly weather specifics, you can check Wellfleet weather in April.
May tends to be cooler and wetter compared to June, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 18°C (65°F) and an average of 11°C (51°F). In contrast, June brings warmer conditions, with minimum temperatures around 10°C (50°F) and highs reaching up to 23°C (73°F), averaging 16°C (61°F). While May experiences more precipitation at 106 mm (4.2 in) over 11 days, June sees slightly less rainfall at 88 mm (3.5 in) over 10 days, accompanied by a marginal increase in humidity. For a detailed look at weather patterns, check out Wellfleet weather in June.
In May, temperatures are cooler with a minimum of 4°C (40°F) and an average of 11°C (51°F), peaking at 18°C (65°F). The month experiences significant rainfall, totaling 106 mm (4.2 in) over 11 days, alongside relatively high humidity at 75%. In contrast, July is much warmer, with minimum temperatures starting at 16°C (60°F), an average of 20°C (69°F), and maximums reaching 26°C (79°F). Rainfall in July is less, at 84 mm (3.3 in) over just 8 days, and the humidity is comparable at 76%. For more details, visit Wellfleet weather in July.
May and August present a stark contrast in weather conditions. In May, temperatures range from a chilly 4°C (40°F) to a mild 18°C (65°F), with an average temperature of 11°C (51°F). The month experiences considerable rainfall, measuring 106 mm (4.2 in) over 11 days, contributing to a high humidity level of 75%. Conversely, August boasts warmer temperatures, with a minimum of 16°C (61°F), an average of 21°C (70°F), and a maximum of 26°C (79°F). Precipitation in August is lighter, totaling 74 mm (2.9 in) across just 7 days, while humidity remains slightly elevated at 76%. For more details on the weather in August, you can check Wellfleet weather in August.
May and September feature contrasting weather patterns. In May, temperatures range from a chilly 4°C (40°F) at night to a mild 18°C (65°F) during the day, with an average of 11°C (51°F). This spring month sees about 106 mm (4.2 in) of precipitation over 11 days, accompanied by a persistent humidity of 75%. In contrast, September enjoys warmer temperatures, with lows of 13°C (56°F) and highs reaching up to 24°C (76°F), averaging 19°C (66°F). The precipitation remains similar at 110 mm (4.3 in) but occurs over just 10 days, maintaining the same humidity level of 75%. For a closer look at September weather specifics, you can visit Wellfleet weather in September.
May and October present distinct weather patterns, showcasing a transition from spring to autumn. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 18°C (65°F), with an average of 11°C (51°F). The month brings about 106 mm (4.2 in) of precipitation over 11 days, alongside consistent humidity levels around 75%. In contrast, October experiences slightly cooler minimum temperatures, starting at 4°C (40°F), but offering a warmer average of 15°C (58°F) and a maximum of 21°C (70°F). The month is wetter, with 161 mm (6.3 in) of rainfall spread over the same 11 days, while maintaining the same humidity of 75%. For more details on October conditions, check out Wellfleet weather in October.
May and November exhibit noticeable differences in weather, despite sharing similar maximum temperatures of 18°C (65°F). In May, temperatures are milder with a minimum of 4°C (40°F) and an average of 11°C (51°F), while November sees chillier conditions, with a minimum of -7°C (20°F) and a higher average of 9°C (48°F). Precipitation levels are comparable, with May having 106 mm (4.2 in) over 11 days and November slightly higher at 105 mm (4.2 in) over 12 days. Humidity also plays a role, with November being marginally more humid at 80% compared to May's 75%. For more details on November weather, you can check Wellfleet weather in November.
May and December present distinct contrasts in weather patterns. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 18°C (65°F), with an average of 11°C (51°F), offering a cool springtime feel. The month sees about 106 mm (4.2 in) of precipitation over 11 days, accompanied by a humidity level of 75%. In contrast, December experiences colder temperatures, with a minimum of -10°C (15°F) and an average of 5°C (41°F), peaking at 15°C (60°F). The precipitation increases slightly to 138 mm (5.4 in) over 13 days, and humidity rises to 80%. For more insights into December’s weather, visit Wellfleet weather in December.
As May arrives in Wellfleet, it marks a noticeable shift in the weather from the chillier months preceding it. Temperatures begin to warm up, with pleasant days that contrast with the colder, damp conditions of earlier spring. However, this month also brings its fair share of rain, contributing to the atmospheric humidity that's typically around 75%, which can make the air feel heavier. With 106 mm of precipitation spread over approximately 11 days, the landscape becomes lush and vibrant, setting the stage for the beauty of summer. For more insights on what to expect year-round, check out Wellfleet Climate.