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May Weather in Chelsea, United States

Last updated: June 24, 2025

In May, the average temperature in Chelsea, United States is a mild 12°C (55°F), with a minimum dipping to -2°C (29°F) and a maximum soaring to 33°C (92°F). Visitors should be prepared for 96 mm (3.8 in) of precipitation spread over approximately 12 days, contributing to an average humidity of 76%. Whether you're exploring the outdoors or seeking shelter from the rain, this weather offers a unique experience!

May Temperature in Chelsea

In May in Chelsea, the average temperature is 12°C (55°F). Maximums can reach 33°C (92°F) and minimums can be as low as -2°C (29°F). This diverse temperature range makes Chelsea a versatile destination for travelers, offering a mix of experiences from warm days to chilly nights.

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. In Chelsea, May typically has an average temperature of 12°C (55°F), with highs reaching up to 33°C (92°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec192229425463686659483324
Data source: Temperature data for Chelsea 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 Chelsea

In Chelsea in May, the precipitation amount is 96 mm (3.8 in) spread over a duration of 12 days.

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. In Chelsea, May typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec7780711179697140987114110488
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Chelsea

In Chelsea in May humidity is 76%. With an average temperature of 12°C (55°F), this humidity feels like a damp embrace, making traveling somewhat uncomfortable as the air clings to your skin and can leave you feeling cooler than expected.

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, helping you understand how conditions vary by season. In May, average humidity in Chelsea is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%76%72%67%64%72%81%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Chelsea

In Chelsea in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Chelsea.

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. In May, the maximum UV index in Chelsea typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
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.

How May Weather in Chelsea Compares to Other Months

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

This table compares monthly weather conditions in Chelsea, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)77 mm (3.0 inches)89%low
February Weather-6°C (22°F)80 mm (3.2 inches)88%moderate
March Weather-2°C (29°F)71 mm (2.8 inches)86%moderate
April Weather5°C (42°F)117 mm (4.6 inches)84%very high
May Weather12°C (55°F)96 mm (3.8 inches)76%very high
June Weather17°C (64°F)97 mm (3.8 inches)72%very high
July Weather20°C (69°F)140 mm (5.5 inches)66%very high
August Weather19°C (67°F)98 mm (3.9 inches)64%very high
September Weather15°C (60°F)71 mm (2.8 inches)72%high
October Weather9°C (48°F)141 mm (5.6 inches)81%moderate
November Weather1°C (33°F)104 mm (4.1 inches)87%moderate
December Weather-5°C (24°F)88 mm (3.4 inches)84%low

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