SeasonMapBar Harbor weather by month
United States
The best time to visit Bar Harbor is June to August — 91/100 in July, 22°C and 8 rainy days. The best season is summer, June to August (88/100 on average).
The worst month is January at 35/100 — freezing, rainy, clean air. See January →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit United States →
Bar Harbor, month by month
Comfort score out of 100 for the kind of trip Bar Harbor is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
| Month | Score | Tier | High | Rain | Sun | Crowds | On |
|---|---|---|---|---|---|---|---|
| JanJanuary | 35 | F | 1°C | 10 d | 6 h | Busy | 1 |
| FebFebruary | 42 | F | 2°C | 9 d | 7 h | Quiet | 1 |
| MarMarch | 49 | F | 4°C | 11 d | 8 h | Busy | 1 |
| AprApril | 63 | C | 9°C | 11 d | 8 h | Shoulder | 1 |
| MayMay | 75 | B | 14°C | 10 d | 10 h | Busy | 2 |
| JunJune | 84 | A | 19°C | 9 d | 10 h | Peak | 3 |
| JulJuly | 91 | S | 22°C | 8 d | 11 h | Peak | 4 |
| AugAugust | 88 | A | 22°C | 9 d | 10 h | Peak | 4 |
| SepSeptember | 81 | A | 19°C | 7 d | 9 h | Peak | 4 |
| OctOctober | 68 | C | 14°C | 10 d | 7 h | Peak | 5 |
| NovNovember | 55 | D | 8°C | 10 d | 6 h | Busy | 2 |
| DecDecember | 37 | F | 3°C | 11 d | 5 h | Busy | 2 |
What's on in Bar Harbor through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
- May
- Cruise ship season1 May – 31 OctSeason
- The CAT ferry to Nova Scotia14 May – 14 Oct (usually)Opening
- June
- Lobster season15 Jun – 15 Dec (usually)Nature
- July
- Peak summer season1 Jul – 31 AugSeason
- September
- Fall foliage28 Sep – 25 Oct (usually)Nature
- October
- Mount Desert Island Marathon11 OctFestival
- November
- Winter shutdown1 Nov – 30 AprSeason
Crowds in Bar Harbor in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsCruise ship season, Peak summer season, Summer break in United States(estimated)
Peak crowdsBusyShoulder seasonQuiet