Deer Isle Weather in August

The climate in Deer Isle during August can be summarized as warm and reasonably dry.

August is in the summer in Deer Isle and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 25°C (77°F), whilst at night 14°C (58°F) is normal.

On average August is the driest month of the year in Deer Isle with around 77mm 3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.2 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Deer Isle in August 2024.