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United States weather

Weather in Bar Harbor, Maine for May 2026

Your guide to Bar Harbor weather in May - trends and predictions

    Temperatures

  • The forecast for the next days in Bar Harbor predicts temperatures to be around 11 °F, close to the historical average.

  • In general, the average temperature in Bar Harbor at the beginning of May is 11.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 17.4 °F by the end of May.

    • Rain 🌧️

  • The climate of Bar Harbor in May is notably wet, with an average of 13 rainy days, and a total of 208.3 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
18
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
14°/7°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Bar Harbor Weather May

Move between months or click on a day
April
June
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
14°
2
Moderate or heavy rain shower
9°
3
Moderate or heavy rain shower
12°
4
Patchy rain possible
14°
5
Patchy rain possible
12°
6
Moderate rain
11°
7
Moderate rain
11°
8
Moderate rain
11°
9
Partly cloudy
11°
10
Patchy rain possible
13°
11
Patchy rain possible
9°
12
Patchy rain possible
12°
13
Patchy rain possible
12°
14
Partly cloudy
14°
15
Patchy rain possible
7°
16
Patchy rain possible
9°
17
Partly cloudy
12°
18
Heavy rain at times
16°
19
Moderate or heavy rain shower
11°
20
Patchy rain possible
11°
21
Patchy rain possible
12°
22
Patchy rain possible
9°
23
Moderate or heavy rain shower
7°
24
Moderate or heavy rain shower
9°
25
Overcast
11°
26
Overcast
17°
27
Partly cloudy
23°
28
Cloudy
24°
29
Heavy rain at times
15°
30
Overcast
17°
31
Cloudy
15°

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

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
May 1 Overcast
Overcast
 14° /4° 0.1 mm 3
May 2 Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /4° 1.9 mm 4
May 3 Moderate or heavy rain shower
Moderate or heavy rain shower
 12° /5° 31.8 mm 3
May 4 Patchy rain possible
Patchy rain possible
 14° /2° 0.2 mm 5.1
May 5 Patchy rain possible
Patchy rain possible
 12° /7° 0.6 mm 6.2
May 6 Moderate rain
Moderate rain
 11° /9° 12.1 mm 3.1
May 7 Moderate rain
Moderate rain
 11° /8° 17.7 mm 2.6
May 8 Moderate rain
Moderate rain
 11° /7° 15.7 mm 0.4
May 9 Partly cloudy
Partly cloudy
 11° /4° 0 mm 3
May 10 Patchy rain possible
Patchy rain possible
 13° /4° 0.5 mm 2
May 11 Patchy rain possible
Patchy rain possible
 9° /7° 2.3 mm 2
May 12 Patchy rain possible
Patchy rain possible
 12° /6° 0.9 mm 2
May 13 Patchy rain possible
Patchy rain possible
 12° /5° 0.7 mm 2
May 14 Partly cloudy
Partly cloudy
 14° /5° 0 mm 3
May 15 Patchy rain possible
Patchy rain possible
 7° /6° 0.6 mm 2
May 16 Patchy rain possible
Patchy rain possible
 9° /6° 0.7 mm 2
May 17 Partly cloudy
Partly cloudy
 12° /5° 0 mm 3
May 18 Heavy rain at times
Heavy rain at times
 16° /7° 15.3 mm 4
May 19 Moderate or heavy rain shower
Moderate or heavy rain shower
 11° /7° 7.4 mm 3
May 20 Patchy rain possible
Patchy rain possible
 11° /6° 0.1 mm 3
May 21 Patchy rain possible
Patchy rain possible
 12° /6° 0.1 mm 3
May 22 Patchy rain possible
Patchy rain possible
 9° /5° 0.8 mm 2
May 23 Moderate or heavy rain shower
Moderate or heavy rain shower
 7° /4° 27.5 mm 2
May 24 Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /6° 9.7 mm 2
May 25 Overcast
Overcast
 11° /6° 0 mm 3
May 26 Overcast
Overcast
 17° /9° 0 mm 4
May 27 Partly cloudy
Partly cloudy
 23° /10° 0 mm 6
May 28 Cloudy
Cloudy
 24° /7° 0 mm 5
May 29 Heavy rain at times
Heavy rain at times
 15° /10° 9.3 mm 4
May 30 Overcast
Overcast
 17° /9° 0 mm 4
May 31 Cloudy
Cloudy
 15° /9° 32.9 mm 4
Next
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.
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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 14° and lows near 7°, suitable for diverse activities and preferences.

How much rainfall should be expected in Bar Harbor during May?

Significant rainfall exceeding 208.3 mm is expected in Bar Harbor during May, occurring over more than 13 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 💧
Typically, Bar Harbor has 13 rainy days in May with a total of 208.3 mm of rainfall.

UV exposure in Bar Harbor during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

Quick links

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Location coordinates Where is Bar Harbor?

Get accurate weather forecasts for Bar Harbor, located at latitude 44.388 and longitude -68.204. Stay updated with localized weather information tailored for Bar Harbor.

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