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August Weather in Chelsea, United States

Last updated: June 24, 2025

The average temperature in Chelsea, United States during August is a warm 27°C (80°F). Expect temperatures to range from a refreshing 16°C (62°F) at night to a sizzling 37°C (99°F) during the day. With an average precipitation of 113 mm (4.4 in) spread over 12 days, be prepared for some rain. The air carries a noticeable humidity of 73%, adding to the tropical feel of the season.

August Temperature in Chelsea

In August in Chelsea, the average temperature is 27°C (80°F). The maximum can reach 37°C (99°F), and the minimum can be as low as 16°C (62°F). This makes it an ideal time for travelers seeking warm weather and outdoor adventures.

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

The chart illustrates August 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, August typically has an average temperature of 27°C (80°F), with highs reaching up to 37°C (99°F) and lows dropping to around 16°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec384053596979828076625044
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.

August Precipitation in Chelsea

In Chelsea in August, the precipitation amount is 113 mm (4.4 in) spread over 12 days.

August Precipitation Trends in Chelsea

The chart displays monthly precipitation patterns in Chelsea, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Chelsea, August typically receives around 113 mm (4.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec766812213920410397113911395350
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Chelsea

In Chelsea in August humidity is 73%. With an average temperature of 27°C (80°F), this humidity feels like a warm, enveloping blanket that can make traveling feel sticky and slightly uncomfortable, prompting frequent breaks in the shade and plenty of hydration.

August Average Humidity in Chelsea

This chart illustrates the average monthly humidity levels in Chelsea, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Chelsea is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%71%74%83%83%81%73%67%72%82%85%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Chelsea

In Chelsea in August, 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 Chelsea.

Maximum UV Index Levels in Chelsea for August

The chart shows the monthly maximum UV Index (UVI) for Chelsea in August, 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 August, the maximum UV index in Chelsea typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Chelsea August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)76 mm (3.0 inches)77%moderate
February Weather5°C (41°F)68 mm (2.7 inches)76%high
March Weather12°C (53°F)122 mm (4.8 inches)71%high
April Weather15°C (59°F)139 mm (5.5 inches)73%very high
May Weather21°C (69°F)204 mm (8.0 inches)83%very high
June Weather26°C (79°F)103 mm (4.1 inches)83%extreme
July Weather28°C (82°F)97 mm (3.8 inches)81%extreme
August Weather27°C (80°F)113 mm (4.4 inches)73%very high
September Weather24°C (76°F)91 mm (3.6 inches)67%very high
October Weather16°C (62°F)139 mm (5.5 inches)72%high
November Weather10°C (50°F)53 mm (2.1 inches)82%moderate
December Weather7°C (44°F)50 mm (2.0 inches)85%moderate

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