August weather forecast
Maine, USA

August in Maine represents the closing chapter of summer, carrying forward the warmth of July but introducing hints of the approaching autumn. Nighttime temperatures typically find comfort in the mid to upper 50s°F, while daytime highs average in the mid-70s°F. However, there are days when temperatures can peak in the lower 80s°F, especially during the first half of the month.

Seaside locales like Portland and Camden are treated to the moderated climate of the Atlantic, resulting in balmy days and cooler evenings. In contrast, the interior regions, including Lewiston and Houlton, might face slightly warmer daytime conditions but are graced with cooler nights, making for comfortable sleeping conditions.

August is a month of transition, and this is evident in Maine's landscape. While the majority of the state still revels in the lushness of summer, hints of autumn begin to surface, especially towards the end of the month. Early fall foliage starts to pepper the forests, introducing splashes of red and orange amidst the predominant green.

Beaches continue to be popular, with many seizing the last opportunities for summer swimming and sunbathing. The ocean water, having warmed over the course of the summer, is at its most inviting temperature. Yet, as the month advances, the evenings get cooler, prompting campfires and layers during nighttime activities.

Rain showers in August are sporadic, usually manifesting as brief, heavy downpours followed by clear skies. Thunderstorms, though less frequent than in July, can still make an appearance.

As August wanes and September emerges on the calendar, Maine prepares for the full spectacle of fall - a season of vibrant colors, crisp air, and harvest celebrations. The gradual temperature dip signifies the nearing end of summer activities and the beginning of autumnal festivities.

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• Portland - August »
  With an average ocean temperature of 63.9°F (17.7°C), August is the month with the warmest seawater in Portland. August is the month with the warmest seawater in Portland, with an average ocean temperature of 63.9°F (17.7°C).
• Lewiston - August »
  The month with the most sunshine in Lewiston is August, with an average of 10.1h of sunshine. In Lewiston, during August, the rain falls for 11.1 days and regularly aggregates up to 1.34" (34mm) of precipitation.
• Bangor - August »
  On the first day of August in Bangor sunrise is at 5:21 am and sunset at 8:01 pm. Transitioning from the peak summers of July, the city of Bangor, Maine starts cooling down in August.
• South Portland - August »
  With an average ocean temperature of 63.9°F (17.7°C), August is the month with the warmest seawater in South Portland. The month with the warmest seawater in South Portland is August, with an average ocean temperature of 63.9°F (17.7°C).
• Auburn - August »
  In Auburn, Maine, in August, during 11.1 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. On the first day of August in Auburn, Maine, sunrise is at 5:28 am and sunset at 8:05 pm.
• Biddeford - August »
  On the last day of August, in Biddeford, Maine, sunrise is at 6:04 am and sunset at 7:19 pm EDT. The month with the most sunshine in Biddeford is August, with an average of 10.3h of sunshine.
• Sanford - August »
  In Sanford in August, it is raining for 11.4 days, with typically 1.22" (31mm) of accumulated precipitation. On the first day of August in Sanford sunrise is at 5:32 am and sunset at 8:06 pm.
• Brunswick - August »
  In Brunswick during August, the rain falls for 11.3 days and regularly aggregates up to 1.54" (39mm) of precipitation. On the first day of August in Brunswick sunrise is at 5:28 am and sunset at 8:04 pm.
• Scarborough - August »
  In Scarborough in August, during 11.2 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. August, recording an average high temperature of 73.9°F (23.3°C) and a low temperature of 60.8°F (16°C), is Scarborough's warmest month.
• Saco - August »
  In Saco during August, the rain falls for 12.1 days and regularly aggregates up to 2.13" (54mm) of precipitation. August continues the trend of warm weather in Saco nearly matching July's temperatures.
• Augusta - August »
  The months with the highest UV index are June through August, with an average maximum UV index of 5. The month with the most sunshine in Augusta is August, with an average of 10.1h of sunshine.
• Westbrook - August »
  Westbrook's warmest month, August, generally records average temperatures ranging from a high of 73.9°F (23.3°C) to a low of 60.8°F (16°C). August brings the highest temperatures in Westbrook, Maine, with an average high of 73.9°F (23.3°C) and an average low of 60.8°F (16°C).