May Weather in Chelsea, United States

Last updated: February 24, 2025

May in Chelsea, United States, brings warm temperatures with a maximum reaching 32°C (90°F) and an average of 17°C (63°F), providing a pleasant spring environment. Cool mornings may dip to a minimum of 2°C (37°F), perfect for light jackets. While residents enjoy the warmer days, May also sees 118 mm (4.6 in) of precipitation spread over 12 days, contributing to a moderately humid atmosphere with an average humidity of 69%. This blend of warmth and moisture creates a vibrant backdrop for outdoor activities and blooming flora, characteristic of springtime in the region.

May Temperature in Chelsea

In May, temperatures in Chelsea, United States, begin to showcase the transition to warmer weather, with a noticeable rise in both the minimum and maximum values. The month starts with a minimum of 2°C (37°F), offering a fresh start compared to the lingering chills of early spring, while average temperatures leap to a more comfortable 17°C (63°F). As the days progress, residents can expect to enjoy the warmth, with maximum temperatures soaring up to 32°C (90°F), making it one of the hottest months of the year. This upward trend not only marks the onset of outdoor activities but also hints at the energy of summer just around the corner, inviting everyone to soak in the vibrant blossom of spring fully.

May Weather in Chelsea: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Chelsea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec343743536372787670614639
Data source: Temperature data for Chelsea generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Chelsea

In May, Chelsea experiences a notable uptick in precipitation, with an average of 118 mm (4.6 in), making it one of the wetter months of the year. This increase in rainfall aligns with the pattern seen during the spring months, as April also boasts substantial precipitation at 111 mm (4.4 in). Interestingly, May matches April in the number of rain days, each recording 12 days of precipitation, suggesting a consistent wet spell during this period. This trend of rising rainfall continues into June, albeit at a lower intensity, with 94 mm (3.7 in) spread over 13 days. Overall, the data highlights May as a pivotal month in Chelsea's annual precipitation cycle, bridging the rainy spring and summer seasons.

May Precipitation Trends in Chelsea

The chart displays monthly precipitation patterns in Chelsea, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec66107103111118941441269113082102
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Chelsea

As spring transitions into summer, May in Chelsea, United States, experiences a noticeable dip in humidity, averaging 69%. This marks a significant decrease from the 78% recorded in April, suggesting a shift toward more comfortable conditions as the months progress. The relatively low humidity levels in May mirror those of June, both settling at 69%, and hint at the onset of a drier phase leading into summer. Interestingly, this trend continues with July recording even lower humidity at 62%. Overall, May offers a refreshing reprieve from the heavier, more humid months earlier in the year, making it an ideal time for outdoor activities and enjoying the blossoming scenery.

May Average Humidity in Chelsea

This chart illustrates the average monthly humidity levels in Chelsea, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Chelsea

As May arrives in Chelsea, the UV Index reaches a striking 10, marking a transition into the very high exposure category and a significantly reduced burn time of just 15 minutes. This trend of increasing intensity began in March, where the UV Index jumped from a moderate 6 to a very high 8 in April, and it sets the stage for the summer months ahead when levels remain consistently high. With June and July also maintaining a UV Index of 10, the importance of sun protection cannot be overstated. As you soak up the sun, remember that awareness of the UV Index is crucial to safeguarding your skin. For more detailed information on UV levels throughout the year, visit Chelsea UV Index.

Maximum UV Index Levels in Chelsea for May

The chart shows the monthly maximum UV Index (UVI) for Chelsea in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Chelsea May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Chelsea

In Chelsea, United States, May shines brightly as a harbinger of summer, boasting 283 hours of delightful sunshine. This surge in sunny days follows a gradual increase from January's modest 152 hours and marks a peak before the peak summer months. As spring blossoms, the hours of sunlight steadily climb, with March and April delivering 254 and 250 hours respectively. This upward trend not only enhances the vibrancy of the landscape but also invites outdoor activities as residents revel in the longer, sunnier days. Notably, May's sunshine serves as a precursor to June's maximum 322 hours, setting the stage for an energizing summer ahead.

Monthly Sunshine Duration in Chelsea: May Highlighted

The May sunshine duration represents the total number of hours Chelsea experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec152h181h254h250h283h322h353h319h279h231h219h181h
Data source: Chelsea May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Chelsea During May

In Chelsea, the likelihood of sunny weather in May hovers at 42%, making it a moderately sunny month compared to other times of the year. A closer look at the data reveals intriguing trends; for instance, while March boasts the highest chance of sunshine at 56%, April and May follow with rates of 45% and 42%, respectively. This slight drop from April to May suggests a gradual shift towards less predictable weather as spring transitions to early summer. Notably, July and June show a similar downward pattern in sunny days, leading to an overall feeling that the peak sunny days may have already passed by late spring. Therefore, while May does provide a decent chance for sun, the trend indicates an approaching season where clear skies may become less frequent.

Percentage of Sunny Days in May in Chelsea

The chart illustrates the percentage of sunny days in Chelsea throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Chelsea experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec47%31%57%45%42%38%44%29%47%37%55%31%
Data source: Chelsea May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Chelsea in May

In Chelsea, United States, May heralds a delightful surge in daylight, with 14 hours illuminating the sky, marking it as one of the sunniest months of the year. This increase follows a steady progression from winter's 9 hours in January, as the days gradually stretch longer into spring. By March, daylight extends to 11 hours, paving the way for the vibrant blooms of April with 13 hours of sunlight. The continuity of 14 hours in June and July reflects the peak of summer, before the gradual tapering begins, leading back to 13 hours in August. This rhythmic dance of daylight not only enhances the beauty of the season but also invites outdoor activities and gatherings, making May a quintessential time to celebrate the arrival of longer days.

Average Daylight Hours in Chelsea for May

The chart illustrates the variation in daylight duration in Chelsea throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 38m10h 40m11h 58m13h 18m14h 26m14h 59m14h 41m13h 41m12h 24m11h 4m9h 55m9h 19m
Data source: Chelsea daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Chelsea

In Chelsea, United States, May brings a gentle shift in the wind, with average speeds recorded at 3.3 m/s (7 mph). This slight decrease from the consistent 3.5 m/s seen in the preceding months paints a picture of a transitioning spring. As the warmer days of late spring emerge, the wind tends to soften, with June following suit at 2.9 m/s (6 mph). Notably, the wind speeds in May represent a trend of gradual decline leading into the summer months, where calmer breezes prevail, particularly in July and August at 2.5 m/s (6 mph). Despite these lower velocities, May's breeze continues to usher in the beauty of blooming landscapes, creating an inviting atmosphere perfect for outdoor activities.

Average May Wind Speed in Chelsea

The chart displays monthly wind speed patterns in Chelsea, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.53.83.53.3 m/s2.92.52.53.23.23.23.0
Data source: Chelsea May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Chelsea Compares to Other Months

The weather in Chelsea 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 Chelsea and find detailed weather information for every month.

May and January showcase significantly contrasting weather patterns. In May, temperatures range from a chilly 2°C (37°F) at night to a warm 32°C (90°F) during the day, with an average of 17°C (63°F). The month experiences about 118 mm (4.6 in) of precipitation over approximately 12 days, and the humidity averages around 69%. In stark contrast, January has much colder temperatures, with a minimum of -18°C (0°F) and a maximum of 19°C (66°F), averaging only 1°C (35°F). This month sees less precipitation at 66 mm (2.6 in) spread over 8 days, but with higher humidity levels of 84%. For those looking to understand more about January weather specifics in Chelsea, you can check out Chelsea weather in January.

May and February present markedly different weather conditions. May enjoys a comfortable temperature range with a minimum of 2°C (37°F), averaging 17°C (63°F), and a maximum reaching 32°C (90°F). Precipitation is relatively high at 118 mm (4.6 in) over 12 days, with humidity sitting at 69%. In contrast, February experiences much colder weather, with lows plunging to -16°C (4°F) and an average temperature of just 3°C (37°F), while the maximum temperature can reach 23°C (73°F). Despite slightly lower precipitation at 107 mm (4.2 in) over 10 days, February's humidity is higher at 82%. For more details about February weather, you can visit Chelsea weather in February.

When comparing the weather in May and March, notable differences emerge. May typically experiences milder temperatures, with a minimum of 2°C (37°F) and an average of 17°C (63°F), while March can be quite chilly, featuring a minimum of -9°C (16°F) and an average of only 6°C (43°F). Additionally, May sees a higher maximum temperature of 32°C (90°F) compared to March's 27°C (80°F). Precipitation levels are somewhat similar, with May recording 118 mm (4.6 in) over 12 days and March having 103 mm (4.0 in) over 10 days. The humidity in March is also slightly higher at 81%, compared to May's 69%. For more detailed insights about Chelsea's weather during this time, you can check Chelsea weather in March.

In comparing the weather of May and April, it is evident that May tends to be warmer overall, with average temperatures rising from 12°C (53°F) in April to 17°C (63°F) in May. The maximum temperature also climbs, reaching up to 32°C (90°F) in May compared to 29°C (85°F) in April. However, both months experience a similar amount of precipitation, with May recording 118 mm (4.6 in) and April slightly lower at 111 mm (4.4 in), though both months experienced rain on approximately 12 days. Humidity levels are slightly lower in May at 69%, compared to 78% in April, indicating a more comfortable atmosphere as spring progresses. For more details on April weather, you can refer to Chelsea weather in April.

May and June exhibit a noticeable transition in weather patterns. In May, temperatures range from a minimum of 2°C (37°F) to a maximum of 32°C (90°F), with an average of 17°C (63°F). This month also experiences higher precipitation levels at 118 mm (4.6 in) over 12 days. By contrast, June sees a warmer minimum temperature of 10°C (50°F) and a higher average temperature of 22°C (73°F), peaking at 35°C (96°F). Although June has slightly lower precipitation at 94 mm (3.7 in) across 13 days, the humidity remains consistent at 69%. For more details on the weather trends, check out Chelsea weather in June.

May experiences a broader temperature range, with lows dipping to 2°C (37°F) and highs reaching up to 32°C (90°F), while the average temperature is a pleasant 17°C (63°F). In contrast, July is warmer, with minimum temperatures of 16°C (61°F) and maximums peaking at 36°C (97°F), averaging around 26°C (79°F). Precipitation in May totals 118 mm (4.6 inches) over 12 days, compared to July's slightly higher 144 mm (5.6 inches) over 14 days, but July boasts lower humidity at 62% versus May's 69%. For more specific details on weather conditions, check out Chelsea weather in July.

May and August present distinct weather patterns, reflecting the transition from spring to late summer. In May, temperatures range from a chilly 2°C (37°F) to a warm 32°C (90°F), with an average of 17°C (63°F). The month sees moderate rainfall, totaling 118 mm (4.6 in) over 12 days, accompanied by a humidity level of 69%. In contrast, August is generally warmer, with temperatures fluctuating between 15°C (60°F) and a high of 35°C (95°F), averaging 25°C (77°F). Precipitation slightly increases to 126 mm (5.0 in) over 14 days, but humidity is lower at 65%. This comparison highlights the warmer days and slightly drier conditions typical of August. For more details on August weather, you can visit Chelsea weather in August.

May and September present contrasting yet pleasant weather patterns. In May, temperatures range from a cool minimum of 2°C (37°F) to a warm maximum of 32°C (90°F), with an average of 17°C (63°F). This month experiences more precipitation, with 118 mm (4.6 in) over about 12 days, and humidity levels are around 69%. In contrast, September typically sees a milder temperature range, from a minimum of 8°C (47°F) to a maximum of 34°C (93°F), with an average of 21°C (71°F). The precipitation decreases to 91 mm (3.6 in) spread over just 10 days, and the humidity remains slightly lower at 68%. For more detailed insights, you can check out Chelsea weather in September.

When comparing the weather in May and October, both months exhibit mild temperatures, but October tends to be slightly cooler on average. May showcases a broader range of temperatures, with a maximum of 32°C (90°F), while October peaks at 34°C (93°F), indicating warmer days despite the lower average temperatures. Precipitation levels are relatively similar, with May experiencing 118 mm (4.6 in) over 12 days, while October receives slightly more at 130 mm (5.1 in) across 10 days. Additionally, humidity in October is higher at 74% compared to May's 69%, contributing to a more muggy atmosphere. For a detailed look at October's weather patterns, you can check Chelsea weather in October.

May and November present quite distinct weather patterns. In May, temperatures range from a minimum of 2°C (37°F) to a maximum of 32°C (90°F), with a pleasant average of 17°C (63°F). The month sees about 118 mm (4.6 in) of precipitation over approximately 12 days, and the humidity is a moderate 69%. In contrast, November experiences considerably cooler temperatures, averaging 8°C (47°F) with a range from -9°C (17°F) to 25°C (76°F). The month has less precipitation, totaling 82 mm (3.2 in) over about 9 days, and higher humidity at 82%. For more detailed information, you can check Chelsea weather in November.

May and December present striking contrasts in weather. In May, temperatures typically range from a mild 2°C (37°F) at night to a warm 32°C (90°F) during the day, with an average of 17°C (63°F). The month is marked by moderate precipitation of 118 mm (4.6 in) over approximately 12 days, accompanied by a humidity level of 69%. In contrast, December features significantly colder conditions, with temperatures dropping to a minimum of -11°C (13°F) and peaking at 19°C (66°F), averaging around 4°C (39°F). While December experiences slightly lower total precipitation at 102 mm (4.0 in) over about 10 days, the humidity is higher at 80%. For more details, you can check out Chelsea weather in December.

Compare Chelsea's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Chelsea

As May unfolds in Chelsea, it brings a welcome shift from the chill of early spring, showcasing a mix of warmer temperatures and increased humidity that make it feel decidedly more like summer. With average temperatures averaging a comfortable 17°C (63°F), the month sees a delightful escape from the colder extremes of winter, while still offering a chance of brisk mornings and evenings. Though precipitation is not uncommon—with about 12 days of rain contributing to a total of 118 mm (4.6 in)—these showers help to nourish the flourishing spring landscape, creating a refreshing ambiance. Overall, May stands out as a transitional month, inviting both exploration and relaxation in the blossoming outdoors. For further information on Chelsea's climate throughout the year, visit Chelsea Climate.