Bar Harbor, ME weather in August
August in Bar Harbor: mild, with some rain. Highs 78°F, lows 60°F, about 9 days with rain. This is the peak of the warm season in Bar Harbor. A great month for outdoor plans.
- Normal high
- 78°F
- Normal low
- 60°F
- Wet days
- 9
- 3.5 in total
- Daylight
- 14.0 h
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 80°F | 76°F |
| Normal low | 61°F | 57°F |
| Chance of a wet day | 33% | 30% |
| Sunrise / sunset | 5:20 am / 7:58 pm | 5:54 am / 7:11 pm |
| Daylight | 14.6 h | 13.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)20 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain (temperature and rain only)12 of 31
- Hot dayshigh 90°F or more1 of 31
- Wet daysat least 0.01 in of rain or melted snow9 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 3.5 in; a dry August brings about 2.3 in and a wet one about 4.5 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20201995: average high 81°F
- Coolest August2008: average high 74°F
- Wettest August1991: 8.7 in
- Driest August1995: 0.5 in
- Highest reading95°F (August 18, 2002)
- Lowest reading42°F (August 30, 1992)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 79°F | 78°F | 71°F |
| Normal low | 60°F | 60°F | 53°F |
| Wet days | 11 | 9 | 11 |
| Comfortable days | 18 | 20 | 22 |
| Daylight | 15.1 h | 14.0 h | 12.5 h |
Highs change by -1°F from July and -7°F into September.
How Bar Harbor ranks in August
- Normal high326th warmest of 378 cities; 3rd of 5 in Maine
- Wet days205th driest of 378
What to pack for Bar Harbor in August
- A rain jacket or umbrella – rain on about 9 days
- A swimsuit – about 12 beach days
Heating and cooling
August has 15 heating degree days and 139 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.
Questions
How hot is Bar Harbor in August?
The normal high is 78°F and the normal low is 60°F. From 1991 to 2020 the hottest August reading was 95°F (most recently on August 18, 2002).
Does it rain a lot in Bar Harbor in August?
About 9 days in August have at least 0.01 in of precipitation, and the normal total is 3.5 in. The wettest August in 1991-2020 was in 1991 (8.7 in); the driest was in 1995 (0.5 in).
Is August a good time to visit Bar Harbor?
August ranks 3rd of 12 months on our comfort score for Bar Harbor (78 out of 100). It has about 20 comfortable days (judged by temperature only) and about 1 day at 90°F or hotter. The best months are June, August and September.
Where the numbers come from
- Temperature, rain and frost dates: Acadia NP (USC00170100), 2.9 mi WSW of the city center, 470 ft (416 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Not available for this location: snowfall, snow depth, humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).