May in Acadia National Park is a shoulder month: highs around 64°F, lows around 44°F. Crowds: quiet — #6 busiest of the park's 12 months. Quiet coast — ocean still cold, fog common. The editorial best window here is September–October. You get about 14h 48m of daylight. To finish Ocean Path (1h 30m) before dark, leave the trailhead by about 6:23 PM.
Month data reviewed · how we check this
| Verdict | Shoulder Quiet and rewarding if you accept reduced services or weather. |
|---|---|
| Temps °F | 64° high / 44° low |
| Crowds | quiet · #6 busiest of the park's 12 months |
| What May is like | Quiet coast — ocean still cold, fog common |
| Best window (whole year) | September–October |
| Peak crowds (whole year) | Jul–Aug |
CROWDS: RELATIVE SEASONALITY FROM NPS VISITATION STATISTICS · TEMPS: APPROXIMATE NOAA NORMALS AT MAIN VISITOR ELEVATION — HIGH COUNTRY RUNS 10–20°F COLDER
DAYLIGHT ON MAY 15 · LOCAL PARK TIME (EDT)COMPUTED FROM THE PARK'S OWN COORDINATES FOR THE 15TH — THE MIDDLE OF THE MONTH STANDS FOR IT, AS IT DOES FOR CLIMATE NORMALS. WITHIN A MONTH THESE TIMES SHIFT BY UP TO AN HOUR
LEAVE THE TRAILHEAD BY — TO FINISH BEFORE DARK ON MAY 15WALKING TIMES ESTIMATED FROM EACH TRAIL'S MEASURED DISTANCE AND ELEVATION GAIN — A PLANNING FIGURE, NOT A PACE. ADD YOUR OWN MARGIN FOR PHOTOS, REST AND CROWDS. WATER AT THE COOL-WEATHER RATE, BECAUSE THIS MONTH AVERAGES 64°F. TRAILS WE HAVE NOT MEASURED ARE LEFT OUT RATHER THAN GUESSED
WHAT MAY ASKS OF YOU HEREAcadia National Park in June — Good, highs around 73°F, crowds: busy (island explorer shuttle starts late june; season kicks off).
Our verdict for May is "Shoulder". Quiet and rewarding if you accept reduced services or weather. Expect highs around 64°F and lows around 44°F, with crowds at the "quiet" level. Temperatures are approximate NOAA normals at the main visitor elevation; crowd levels follow published NPS visitation statistics.
Across the full 12-month review, the best window is September–October, and the peak-crowd months are Jul–Aug. May itself we rate "Shoulder".
June we rate "Good" against "Shoulder" for May, with highs around 73°F and crowds at the "busy" level.
About 14h 48m on May 15: the sun rises around 5:05 AM and sets around 7:53 PM local park time (EDT). Computed from the park's own coordinates, so it is the light you actually get at the trailhead, not the nearest city's.
Ocean Path takes about 1h 30m of walking, so on May 15 you would need to leave the trailhead by about 6:23 PM to finish before dark — the sun sets around 7:53 PM local park time (EDT). Walking times are estimated from each trail's measured distance and elevation gain, so treat them as a planning figure and add your own margin for photos, rest and crowds.
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