May Weather in Chatham, United States

Last updated: February 24, 2025

In May, Chatham experiences a delightful transition into spring, with maximum temperatures reaching 19°C (66°F) and an average of 11°C (52°F). The air is often filled with 75% humidity, creating a refreshing atmosphere. However, residents should be prepared for the occasional downpour, as the region sees about 121 mm (4.8 in) of precipitation over 12 days. This month beautifully blends cool breezes and blooming landscapes, making it an enchanting time to explore the outdoors while enjoying the vibrant hues of nature in Chatham.

May Temperature in Chatham

In May, temperatures in Chatham, United States, begin to embrace the warmth of spring, making way for a noticeable shift from the chill of winter. With a minimum temperature of 5°C (41°F) and a comfortable average of 11°C (52°F), residents can finally trade in their heavy coats for lighter layers. The maximum temperature reaches a pleasant 19°C (66°F), marking a delightful transition as the days grow longer and more vibrant. This month serves as a pivotal turning point, as Chatham emerges from the frosty grip of winter, paving the way for the sun-soaked days of summer ahead. Overall, May is characterized by rising temperatures that invite outdoor activities and the blossoming of nature, celebrating the full swing of spring.

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

The chart illustrates May temperature patterns in Chatham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363638455261697066594840
Data source: Temperature data for Chatham 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 Chatham

In May, Chatham experiences a moderate precipitation amount of 121 mm (4.8 in), highlighting a continuation of the wetter spring trend set by April's 131 mm. With 12 days of rainfall, May maintains a balanced rhythm, suggesting that the region's lush greenery thrives amidst frequent showers. This steady precipitation is slightly lower than the preceding months, which contribute to a gradual tapering of rainfall as summer approaches. Overall, May's weather remains pivotal in preparing the landscape for the drier conditions expected in June and July, while still ensuring ample moisture for burgeoning flora.

May Precipitation Trends in Chatham

The chart displays monthly precipitation patterns in Chatham, 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.
JanFebMarAprMayJunJulAugSepOctNovDec95124119131121887783116169106138
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Chatham

In Chatham, United States, May ushers in a noticeable shift in humidity, with levels dropping to 75% from the higher readings of the earlier months. Following a steady decline from January's 84% through April's 79%, May marks the beginning of a more comfortable weather pattern as humidity levels stabilize further into the spring. Although the humidity slightly rebounds in June, it remains balanced through the summer months, rarely exceeding 78%. This trend not only enhances the outdoor experience but also signals the transition from the cooler, moist winter to a more inviting spring, paving the way for enjoyable activities under the vibrant Chatham sun.

May Average Humidity in Chatham

This chart illustrates the average monthly humidity levels in Chatham, 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%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Chatham

In Chatham, the UV Index soars to 9 in May, marking a shift into the very high exposure category. As spring gives way to summer, residents and visitors should be cautious, as the burn time drops to just 15 minutes for fair-skinned individuals. This upward trend began in April when the UV Index reached 8, reflecting increased sun intensity that continues into June, with a peak of 10. It's a significant jump from earlier months, where even March's 6 indicated a move towards higher UV levels. As warmer days approach, awareness of sun safety becomes crucial. For more insights, check out the detailed Chatham UV Index.

Maximum UV Index Levels in Chatham for May

The chart shows the monthly maximum UV Index (UVI) for Chatham 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.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098642
Data source: Chatham 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 Chatham

May shines brightly in Chatham, United States, delivering a delightful 298 hours of sunshine. This marks a significant increase from the previous months, as the city transitions from the cooler, cloudier days of April with 243 hours to the sun-drenched days of late spring. As the days grow longer, May stands out as a turning point, heralding the arrival of summer. The consistent upward trend continues into June, which boasts 325 hours of sunny skies, indicating that residents can anticipate a vibrant and warm season ahead. This seasonal progression showcases Chatham's welcoming climate, inviting both locals and visitors to soak up the brilliant sunshine as nature fully awakens.

Monthly Sunshine Duration in Chatham: May Highlighted

The May sunshine duration represents the total number of hours Chatham 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.
JanFebMarAprMayJunJulAugSepOctNovDec136h179h257h243h298h325h344h331h280h238h202h159h
Data source: Chatham May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Chatham During May

In May, Chatham, United States, enjoys a 41% chance of sunny weather, making it one of the more favorable months for sunshine compared to the preceding spring. While it slightly lags behind March's sunnier disposition at 55%, May performs better than April's 43%. This trend suggests a gradual transition to sunnier days as the region moves into late spring and approaches summer. The overall pattern indicates a fluctuating yet promising opportunity for warmth and brightness, as the weather begins to shift, providing residents and visitors alike a delightful chance to bask in the sun.

Percentage of Sunny Days in May in Chatham

The chart illustrates the percentage of sunny days in Chatham 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 Chatham experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec34%26%56%44%41%38%38%36%51%44%50%27%
Data source: Chatham May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Chatham in May

As spring blossoms into summer in Chatham, United States, the daylight duration experiences a remarkable transformation. Starting with a modest 9 hours in January, the days gradually lengthen, reaching 14 hours by May. This shift reflects the transition to brighter days, offering residents more opportunities to enjoy outdoor activities and embrace the warmth of the season. This trend continues into June, with daylight peaking at 15 hours, before tapering off as autumn approaches. By October, daylight drops back to 11 hours, reminding us of the cyclical nature of the seasons. Thus, May stands out as a vibrant month, bridging the gentle warmth of spring with the fullness of summer.

Average Daylight Hours in Chatham for May

The chart illustrates the variation in daylight duration in Chatham throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 31m10h 36m11h 58m13h 22m14h 33m15h 9m14h 49m13h 46m12h 25m11h 1m9h 48m9h 10m
Data source: Chatham daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Chatham

In May, Chatham experiences a notable dip in average wind speed, measuring 6.4 m/s (14 mph), making it one of the calmer months compared to the rest of the year. This decline follows a gradual decrease from April's 7.1 m/s (16 mph), highlighting the shift in seasonal winds as spring transitions toward summer. Interestingly, this pattern of waning winds continues into the summer months, with July and August recording even lower speeds of 5.5 m/s (12 mph) and 5.1 m/s (12 mph), respectively. As the warmer months approach, the breezy March and April days give way to more tranquil conditions, creating an ideal atmosphere for outdoor activities and leisurely pursuits throughout May.

Average May Wind Speed in Chatham

The chart displays monthly wind speed patterns in Chatham, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7.98.07.77.16.4 m/s6.75.55.16.37.17.47.4
Data source: Chatham May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Chatham Compares to Other Months

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

May and January weather present stark contrasts in temperature and conditions. In May, temperatures rise with a minimum of 5°C and a pleasant average of 11°C, reaching a comfortable maximum of 19°C. However, May also brings significant rainfall, with 121 mm over about 12 days and a humidity level of 75%. In contrast, January is much colder, with temperatures dropping to a minimum of -13°C and only averaging 2°C, reaching a maximum of 12°C. Despite being a winter month, January sees less precipitation at 94 mm over 10 days but experiences higher humidity at 84%. For a more detailed look at January weather, visit Chatham weather in January.

The weather in May is significantly milder than in February, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 19°C (66°F), compared to February's chilling lows of -11°C (12°F) and highs peaking at 11°C (53°F). Both months experience similar levels of precipitation, with May recording 121 mm (4.8 in) and February slightly higher at 124 mm (4.9 in), though the humidity is generally lower in May at 75% compared to February's 84%. For a more detailed look at February weather, you can visit Chatham weather in February.

In comparing the weather of March and May, it’s clear that May brings significantly milder temperatures, with an average of 11°C (52°F) compared to March's average of just 3°C (38°F). May enjoys maximum temperatures reaching up to 19°C (66°F), while March peaks at 12°C (54°F). Both months see similar amounts of precipitation—121 mm (4.8 in) for May and 119 mm (4.7 in) for March—but May experiences slightly more humid conditions at 75% compared to March’s 82%. For a closer look at the weather conditions in March, you can check Chatham weather in March.

In comparing the weather patterns of April and May, a few notable differences emerge. May generally experiences milder temperatures with a minimum of 5°C (41°F) and an average of 11°C (52°F), compared to April's minimum of 1°C (33°F) and an average of 7°C (45°F). While both months see significant rainfall, May has a total precipitation of 121 mm (4.8 in) over 12 days, which is slightly lower than April's 131 mm (5.1 in) distributed over 14 days. Additionally, humidity levels are a bit lower in May at 75%, compared to 79% in April, indicating a slightly drier feel as spring progresses. For more detailed insights into April weather, you can check Chatham weather in April.

May and June exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 5°C (41°F) to a maximum of 19°C (66°F), with an average of 11°C (52°F). The month sees significant rainfall, totaling 121 mm (4.8 in) over 12 days, and humidity levels hover around 75%. In contrast, June offers warmer temperatures, with a minimum of 10°C (50°F), an average of 16°C (61°F), and a maximum of 22°C (73°F). Rainfall decreases to 88 mm (3.5 in) over 10 days, while humidity rises slightly to 78%. For a more detailed overview of the weather during June, you can check Chatham weather in June.

May and July showcase a distinct contrast in weather patterns. In May, temperatures range from a chilly 5°C (41°F) at night to a comfortable high of 19°C (66°F) during the day, while the month experiences significant rainfall, totaling 121 mm (4.8 in) over 12 days, contributing to a humidity level of 75%. In contrast, July boasts much warmer temperatures, with minimums around 16°C (61°F), average highs of 20°C (69°F), and peaks reaching up to 26°C (79°F). Rainfall is less frequent in July, totaling 77 mm (3.0 in) over just 8 days, and humidity remains fairly consistent at 76%. For a closer look at July's weather specifics, visit Chatham weather in July.

In comparing the weather between May and August, it is evident that August offers a warmer and drier climate. In May, temperatures range from a chilly 5°C (41°F) at night to a comfortable max of 19°C (66°F) during the day, with average temperatures hovering around 11°C (52°F). Precipitation is quite high in May, totaling 121 mm (4.8 in) over 12 days, accompanied by a humidity level of 75%. Conversely, August sees a significant rise in temperature, with minimums at 16°C (61°F) and maximums reaching 26°C (78°F), averaging around 21°C (71°F). The month experiences considerably less rainfall, accumulating just 83 mm (3.3 in) over 8 days and maintaining a similar humidity level of 76%. For more detailed information, you can check out Chatham weather in August.

May and September present a noticeable contrast in weather patterns. In May, temperatures range from a chilly minimum of 5°C (41°F) to a comfortable maximum of 19°C (66°F), with an average temperature of 11°C (52°F). The month is relatively wet, experiencing 121 mm (4.8 in) of precipitation over about 12 days, while the humidity remains elevated at 75%.

By September, the temperatures have notably warmed, with a minimum of 13°C (56°F) and a maximum of 24°C (75°F), leading to a more pleasant average of 19°C (66°F). Precipitation levels drop slightly to 116 mm (4.6 in) but occur over fewer days, approximately 10. Despite this decrease in rain days, the humidity remains consistent at 75%. For more details, you can refer to Chatham weather in September.

May and October both feature relatively mild temperatures, but October tends to be slightly warmer overall. In May, the average temperature hovers around 11°C (52°F), while October sees an average of 15°C (59°F). Additionally, October records higher maximum temperatures, reaching up to 21°C (70°F) compared to May's peak of 19°C (66°F). However, October also experiences increased precipitation, with 169 mm (6.7 in) of rain over 11 days, compared to May's 121 mm (4.8 in) over 12 days, making it a wetter month. Humidity remains consistent for both months at 75%, contributing to a similar, somewhat humid feel. For more detailed insights, check out Chatham weather in October.

May and November present distinct weather characteristics, each marking a transition in the seasonal cycle. In May, temperatures range from a chilly 5°C (41°F) at night to a comfortable 19°C (66°F) during the day, with an average of 11°C (52°F). The month sees about 121 mm (4.8 in) of precipitation across roughly 12 days and maintains a humidity level of 75%. Conversely, November experiences colder temperatures, with minimums dipping to -6°C (21°F), an average of 9°C (49°F), and a maximum of 18°C (65°F). Precipitation is slightly lower at 106 mm (4.2 in) over 10 days, accompanied by a higher humidity level of 80%. For a detailed look at November weather, visit Chatham weather in November.

May and December present distinctly different weather patterns. In May, temperatures range from a minimum of 5°C (41°F) to a maximum of 19°C (66°F), with an average of 11°C (52°F). The month experiences about 121 mm (4.8 in) of precipitation over approximately 12 days, accompanied by a humidity level of 75%. In contrast, December sees much colder temperatures, with minimums dropping to -10°C (14°F) and maximums reaching only 15°C (60°F), averaging around 5°C (41°F). Precipitation in December is slightly higher at 138 mm (5.4 in), also spread across 12 days, while the humidity increases to 80%. For more detailed information, you can check Chatham weather in December.

Compare Chatham's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Chatham

As May unfolds in Chatham, it brings a refreshing shift from the cooler, crisp air of early spring, offering a delightful blend of warmer temperatures and increased humidity, making it feel pleasantly mild. While precipitation remains a factor, with some rainy days throughout the month, the overall atmosphere grows vibrant and lush, setting the stage for summer. May's characteristic charm lies in its temperate averages and blossoming nature, inviting outdoor activities amid its occasional showers. For a deeper understanding of how this month compares with others throughout the year, explore our comprehensive Chatham Climate guide.