Typical September weather
Bar Harbor
Maine · September
71° days
53° nights
about 7 rainy days · 12½ hours of daylight · ocean 58°
What to pack
- Light jacket
What September feels like
September trades school-holiday crowds for cruise-ship day-trippers who mostly stay near the pier, so the trails go quiet. The water is still holding August's warmth and the blackflies are long finished — the two things that make this the local favorite.
Expect about 7 days with real rain — enough to notice, not enough to plan around.
Can you swim?
The ocean runs about 58° — cold — a quick dip takes resolve.
The numbers
| Typical high | 71° |
|---|---|
| Typical low | 53° |
| Days with real rain | 7 |
| Total rain | 4.2 in |
| Water temperature | 58° |
| Sunrise / sunset (mid-month) | 6:12 am / 6:43 pm |