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August Weather in Maine, United States

Last updated: June 24, 2025

In August, the average temperature in Maine, United States is a comfortable 19°C (67°F), with daily variations ranging from a chilly 5°C (42°F) to a warm 32°C (89°F). Expect around 121 mm (4.8 in) of precipitation over 12 days, accompanied by an average humidity of 73%. Perfect for those who enjoy a mix of warm days and refreshing rain!

August Temperature in Maine

In August in Maine, the average temperature is 19°C (67°F). The maximum can reach 32°C (89°F) and the minimum can be as low as 5°C (42°F). This makes it an ideal time for travelers to experience pleasant weather while exploring the area's attractions.

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

The chart illustrates August temperature patterns in Maine, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Maine, August typically has an average temperature of 19°C (67°F), with highs reaching up to 32°C (89°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec171731415667716761473223
Data source: Temperature data for Maine 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 Maine

In Maine in August, the precipitation amount reaches 121 mm (4.8 in) over the course of 12 days.

August Precipitation Trends in Maine

The chart displays monthly precipitation patterns in Maine, 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 Maine, August typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec34505399103102118121831095052
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Maine

In Maine in August humidity is 73%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket wrapped around you, making travel slightly uncomfortable and sticky, but still manageable as long as you stay hydrated and take breaks in the shade.

August Average Humidity in Maine

This chart illustrates the average monthly humidity levels in Maine, 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 Maine is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Maine

In Maine in August, 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 Maine.

Maximum UV Index Levels in Maine for August

The chart shows the monthly maximum UV Index (UVI) for Maine 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 Maine typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457810997532
Data source: Maine 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 Maine Compares to Other Months

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

This table compares monthly weather conditions in Maine, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)34 mm (1.3 inches)89%low
February Weather-8°C (17°F)50 mm (2.0 inches)90%moderate
March Weather-1°C (31°F)53 mm (2.1 inches)87%moderate
April Weather5°C (42°F)98 mm (3.9 inches)84%high
May Weather13°C (56°F)103 mm (4.1 inches)77%very high
June Weather19°C (67°F)102 mm (4.0 inches)75%very high
July Weather22°C (71°F)117 mm (4.6 inches)74%very high
August Weather19°C (67°F)121 mm (4.8 inches)73%very high
September Weather16°C (61°F)83 mm (3.3 inches)78%high
October Weather8°C (47°F)109 mm (4.3 inches)84%moderate
November Weather0°C (32°F)50 mm (2.0 inches)89%moderate
December Weather-5°C (23°F)52 mm (2.1 inches)87%low

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