Bar Harbor (ME)
May
Weather in Bar Harbor, Maine for May 2026
Your guide to Bar Harbor weather in May - trends and predictions
In general, the average temperature in Bar Harbor at the beginning of May is 13.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 17.4 °F by the end of May.
The climate of Bar Harbor in May is notably wet, with an average of 14 rainy days, and a total of 175.3 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
14
Rainy days
0
Snow days
15°/7°
Temperatures
17 km/h
Avg max wind
77 %
Avg humidity
Bar Harbor Weather May
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Temperatures trend during May in Bar Harbor
See the weather trend as well as the moving average line
May weather in Bar Harbor day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Overcast | 14° /3° | 0 mm | 3 | |
| May 2 |  Moderate or heavy rain shower | 8° /6° | 3.2 mm | 2 | |
| May 3 | Moderate or heavy rain shower | 18° /6° | 39.4 mm | 4 | |
| May 4 | Moderate or heavy rain shower | 15° /8° | 6 mm | 4 | |
| May 5 | Overcast | 17° /9° | 0 mm | 4 | |
| May 6 | Moderate rain at times | 10° /6° | 6.9 mm | 3 | |
| May 7 |  Patchy rain possible | 13° /7° | 5.8 mm | 3 | |
| May 8 | Patchy rain possible | 18° /7° | 0.1 mm | 4 | |
| May 9 | Overcast | 13° /8° | 0.4 mm | 3 | |
| May 10 | Moderate or heavy rain shower | 9° /5° | 33.9 mm | 2 | |
| May 11 | Overcast | 16° /8° | 0 mm | 4 | |
| May 12 | Overcast | 13° /6° | 0 mm | 3 | |
| May 13 |  Sunny | 19° /8° | 0 mm | 5 | |
| May 14 |  Cloudy | 17° /6° | 0 mm | 4 | |
| May 15 | Overcast | 20° /10° | 0.1 mm | 5 | |
| May 16 | Patchy rain possible | 18° /10° | 0.1 mm | 4 | |
| May 17 | Moderate or heavy rain shower | 12° /8° | 9.3 mm | 3 | |
| May 18 |  Heavy rain at times | 16° /7° | 15.3 mm | 4 | |
| May 19 | Moderate or heavy rain shower | 11° /7° | 7.4 mm | 3 | |
| May 20 | Patchy rain possible | 11° /6° | 0.1 mm | 3 | |
| May 21 | Patchy rain possible | 12° /6° | 0.1 mm | 3 | |
| May 22 | Patchy rain possible | 9° /5° | 0.8 mm | 2 | |
| May 23 | Moderate or heavy rain shower | 7° /4° | 27.5 mm | 2 | |
| May 24 | Moderate or heavy rain shower | 9° /6° | 9.7 mm | 2 | |
| May 25 | Overcast | 11° /6° | 0 mm | 3 | |
| May 26 | Overcast | 17° /9° | 0 mm | 4 | |
| May 27 |  Partly cloudy | 23° /10° | 0 mm | 6 | |
| May 28 | Cloudy | 24° /7° | 0 mm | 5 | |
| May 29 | Heavy rain at times | 15° /10° | 9.3 mm | 4 | |
| May 30 | Overcast | 17° /9° | 0 mm | 4 | |
| May 31 | Cloudy | 15° /9° | 32.9 mm | 4 | |
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Important Notice
Our weather forecast for Bar Harbor in May 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.
Change Month
Bar Harbor in May - FAQ
What are the expected maximum and minimum temperatures in Bar Harbor during May?
During May, expect a variety of temperatures with highs around 15° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Bar Harbor during May?
Significant rainfall exceeding 175.3 mm is expected in Bar Harbor during May, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bar Harbor during May?
The average wind speed in Bar Harbor during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Bar Harbor
Explore the daily rainfall trends and prepare for Bar Harbors May weather 💧
UV exposure in Bar Harbor during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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