Bar Harbor (ME)
August
Weather in Bar Harbor, Maine for August 2025
Your guide to Bar Harbor weather in August - trends and predictions
In general, the average temperature in Bar Harbor at the beginning of August is 25.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.6 °F by the end of August.
Bar Harbor in August brings notable rainfall, with an average of 18 rainy days and a total precipitation of 199.3 mm.
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Temperatures
Rain 🌧️
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13
Dry days
18
Rainy days
0
Snow days
23°/14°
Temperatures
15 km/h
Avg max wind
81 %
Avg humidity
Bar Harbor Weather August
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Temperatures trend during August in Bar Harbor
See the weather trend as well as the moving average line
August weather in Bar Harbor day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Patchy rain possible | 27° /17° | 18.6 mm | 6 | |
| Aug. 2 |  Cloudy | 29° /18° | 0 mm | 6 | |
| Aug. 3 |  Moderate or heavy rain shower | 22° /18° | 17.5 mm | 5 | |
| Aug. 4 | Moderate or heavy rain shower | 26° /18° | 4.1 mm | 6 | |
| Aug. 5 | Moderate or heavy rain shower | 27° /16° | 11.7 mm | 6 | |
| Aug. 6 | Cloudy | 22° /15° | 2.3 mm | 5 | |
| Aug. 7 |  Partly cloudy | 23° /14° | 0 mm | 6 | |
| Aug. 8 |  Sunny | 23° /13° | 0 mm | 6 | |
| Aug. 9 | Moderate or heavy rain shower | 19° /14° | 58.4 mm | 4 | |
| Aug. 10 | Moderate or heavy rain shower | 25° /19° | 31.5 mm | 6 | |
| Aug. 11 | Partly cloudy | 24° /15° | 0 mm | 6 | |
| Aug. 12 | Patchy rain possible | 23° /15° | 0.6 mm | 5 | |
| Aug. 13 | Cloudy | 25° /14° | 0 mm | 6 | |
| Aug. 14 | Moderate or heavy rain shower | 23° /15° | 12.4 mm | 5 | |
| Aug. 15 | Moderate rain at times | 22° /14° | 14.9 mm | 5 | |
| Aug. 16 | Patchy rain possible | 22° /15° | 0.8 mm | 5 | |
| Aug. 17 | Sunny | 22° /13° | 0 mm | 6 | |
| Aug. 18 | Patchy rain possible | 20° /14° | 0.5 mm | 5 | |
| Aug. 19 | Patchy rain possible | 22° /15° | 3.8 mm | 5 | |
| Aug. 20 | Moderate rain at times | 19° /14° | 3.7 mm | 4 | |
| Aug. 21 | Patchy rain possible | 18° /12° | 0.4 mm | 4 | |
| Aug. 22 | Patchy rain possible | 20° /12° | 0.1 mm | 5 | |
| Aug. 23 | Patchy rain possible | 22° /11° | 0.2 mm | 5 | |
| Aug. 24 | Partly cloudy | 24° /13° | 0 mm | 6 | |
| Aug. 25 | Patchy rain possible | 24° /14° | 0.9 mm | 5 | |
| Aug. 26 | Moderate or heavy rain shower | 22° /14° | 12.9 mm | 5 | |
| Aug. 27 | Sunny | 23° /13° | 0 mm | 6 | |
| Aug. 28 | Moderate or heavy rain shower | 21° /14° | 3.9 mm | 5 | |
| Aug. 29 | Sunny | 21° /11° | 0 mm | 6 | |
| Aug. 30 | Sunny | 20° /10° | 0 mm | 6 | |
| Aug. 31 | Patchy rain possible | 20° /12° | 0.1 mm | 5 | |
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Important Notice
Our weather forecast for Bar Harbor in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Bar Harbor forecast closer to your planned date for the most up-to-date weather information.
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Bar Harbor in August - FAQ
What are the expected maximum and minimum temperatures in Bar Harbor during August?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Bar Harbor during August?
Significant rainfall exceeding 199.3 mm is expected in Bar Harbor during August, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bar Harbor during August?
The average wind speed in Bar Harbor during August is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Bar Harbor
Explore the daily rainfall trends and prepare for Bar Harbors August weather 💧
UV exposure in Bar Harbor during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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