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May Weather in Chatham, United States

Last updated: June 24, 2025

In May, the average temperature in Chatham, United States is a pleasant 19°C (66°F), with temperatures ranging from a chilly 1°C (33°F) to a warm 34°C (94°F). Be prepared for some rain, as the area experiences an average precipitation of 144 mm (5.7 in) over about 15 days. Additionally, the humidity is typically high at 80%, adding to the overall atmospheric experience of the region.

May Temperature in Chatham

In May in Chatham, the average temperature is 19°C (66°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop as low as 1°C (33°F). Make sure to pack layers to enjoy both warm days and cooler nights while exploring.

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. In Chatham, May typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (94°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec293244536575777471574236
Data source: Temperature data for Chatham generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Chatham

In Chatham in May, the precipitation amount is 144 mm (5.7 in) during a span of 15 days.

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. In Chatham, May typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec686913613114412711088601026951
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Chatham

In Chatham in May humidity is 80%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel more strenuous and sticky, which can ultimately dampen the experience of traveling.

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, helping you understand how conditions vary by season. In May, average humidity in Chatham is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Chatham

In Chatham in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Chatham.

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. In May, the maximum UV index in Chatham typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111198643
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.

How May Weather in Chatham Compares to Other Months

Weather in Chatham varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Chatham, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Chatham, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)68 mm (2.7 inches)84%moderate
February Weather0°C (32°F)69 mm (2.7 inches)82%moderate
March Weather6°C (44°F)136 mm (5.4 inches)84%high
April Weather11°C (53°F)130 mm (5.1 inches)83%very high
May Weather19°C (66°F)144 mm (5.7 inches)80%very high
June Weather24°C (75°F)126 mm (5.0 inches)83%extreme
July Weather25°C (78°F)110 mm (4.3 inches)82%extreme
August Weather24°C (75°F)87 mm (3.4 inches)82%very high
September Weather22°C (71°F)60 mm (2.4 inches)79%very high
October Weather14°C (58°F)102 mm (4.0 inches)79%high
November Weather5°C (42°F)69 mm (2.7 inches)88%moderate
December Weather2°C (36°F)50 mm (2.0 inches)87%moderate

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