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 »
  In Portland during August, the rain falls for 13.4 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Portland the average seawater temperature in August is 63.9°F (17.7°C).
• Lewiston - August »
  On the last day of August, in Lewiston sunrise is at 6:03 am and sunset at 7:18 pm EDT. Lewiston records an average high-temperature of a still warm 76.8°F (24.9°C) in August, closely mirroring the climate of the previous month.
• Bangor - August »
  On the first day of August in Bangor sunrise is at 5:21 am and sunset at 8:00 pm. The months with the highest UV index in Bangor, Maine, are June through August, with an average maximum UV index of 5.
• 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. In South Portland in August, the average water temperature is 63.9°F (17.7°C).
• Auburn - August »
  The month with the most sunshine in Auburn is August, with an average of 10.1h of sunshine. In Auburn, during August, the rain falls for 11.1 days and regularly aggregates up to 1.34" (34mm) of precipitation.
• Biddeford - August »
  In Biddeford in August, it is raining for 12.1 days, with typically 2.13" (54mm) of accumulated precipitation. In Biddeford, in August, during 12.1 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.
• Sanford - August »
  The month with the most sunshine in Sanford is August, with an average of 10.5h of sunshine. In Sanford in August, it is raining for 11.4 days, with typically 1.22" (31mm) of accumulated precipitation.
• Brunswick - August »
  August in Brunswick continues the warmth of July, with equal high temperatures and insignificant changes in humidity. On the first day of August in Brunswick sunrise is at 5:29 am and sunset at 8:03 pm.
• Scarborough - August »
  In Scarborough in August, it is raining for 11.2 days, with typically 1.57" (40mm) of accumulated precipitation. June through August, with an average maximum UV index of 5, are months with the highest UV index in Scarborough, Maine.
• Saco - August »
  The month with the most sunshine in Saco is August, with an average of 10.3h of sunshine. With an average maximum UV index of 6, August is the month with the highest UV index in Saco.
• Augusta - August »
  In Augusta during August, the rain falls for 13.3 days and regularly aggregates up to 2.28" (58mm) of precipitation. In Augusta during August, the rain falls for 13.3 days and regularly aggregates up to 2.28" (58mm) of precipitation.
• Westbrook - August »
  August stands out as Westbrook's warmest month, with an average high-temperature of 73.9°F (23.3°C) and a low-temperature of 60.8°F (16°C). August, with an average high of 73.9°F (23.3°C) and a low of 60.8°F (16°C), signifies the warmest month of the year in Westbrook.