May Weather in Chatham, United States

Last updated: June 24, 2025

In May, the average temperature in Chatham, United States is a pleasant 20°C (69°F). However, temperatures can swing from a minimum of 2°C (35°F) to a sizzling maximum of 36°C (96°F). Expect some rain, with 121 mm (4.8 in) of precipitation over 11 days, and enjoy a relatively high average humidity of 82%.

May Temperature in Chatham

In May in Chatham, the average temperature is 20°C (69°F). Maximum temperatures can reach 36°C (96°F), while minimum temperatures can drop as low as 2°C (35°F). Pack accordingly to enjoy a comfortable and varied climate during your travels!

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 20°C (69°F), with highs reaching up to 36°C (96°F) and lows dropping to around 2°C (35°F).

Data source: Temperature data for Chatham generated using information from the Copernicus Climate Change Service.

May Precipitation in Chatham

In Chatham in May, the total precipitation amount is 121 mm (4.8 in), which occurs over the course of 11 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 121 mm (4.8 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Chatham

In Chatham in May humidity is 82%. With an average temperature of 20°C (69°F), this humidity feels like a warm, sticky embrace that clings to your skin, making it necessary to stay hydrated while exploring the sights.

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 82%, offering insight into how humid the weather typically is during this month.

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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (40°F)	74 mm (2.9 inches)	84%	moderate
February Weather	7°C (46°F)	110 mm (4.3 inches)	84%	high
March Weather	10°C (51°F)	70 mm (2.8 inches)	84%	very high
April Weather	15°C (60°F)	125 mm (4.9 inches)	82%	very high
May Weather	20°C (69°F)	121 mm (4.8 inches)	82%	very high
June Weather	24°C (75°F)	87 mm (3.4 inches)	83%	extreme
July Weather	27°C (80°F)	68 mm (2.7 inches)	79%	very high
August Weather	25°C (78°F)	102 mm (4.0 inches)	77%	very high
September Weather	23°C (73°F)	109 mm (4.3 inches)	75%	very high
October Weather	17°C (63°F)	111 mm (4.4 inches)	81%	very high
November Weather	9°C (49°F)	77 mm (3.0 inches)	87%	moderate
December Weather	7°C (44°F)	100 mm (3.9 inches)	85%	moderate