Bar Harbor weather in October

In October, Bar Harbor sees average daytime highs of 56°F and overnight lows near 45°F, with 4.7 in of precipitation across 9.9 wet days and about 10.8 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 60°F in the first days to 51°F by the end. The sky is clear or mostly clear about 33% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 10 hours by month's end. Set against the rest of the year, October is Bar Harbor's 4th-clearest and 6th-windiest month. For the whole year in context, see Bar Harbor's year-round climate.

Daytime high
56°
6th warmest
Overnight low
45°
7th coldest
Precipitation
4.7 in
9.9 wet days
Daylight
10 h 42 min
5:56 AM – 4:40 PM
Cloud cover
59%
4th clearest
Wind
10 mph
6th windiest
Solar energy
2.76 kWh/m²
Travel score
3.7
out of 10

Bar Harbor is town in Hancock County, Maine, United States.

Air quality
Excellent
PM10 5.1 µg/m³ · 2019
Founded
1763

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 60°F in the first days to 51°F by the end.

A typical October day in Bar Harbor reaches about 56°F in the afternoon and slips back to 45°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 49°F and 63°F. Set against its neighbours, October runs about 10°F cooler than September and about 10°F warmer than November.

30°40°50°60°70°151015202531
Avg high (°F)Avg low (°F)
16150
26049
36049
46049
56048
65948
75948
85847
95847
105847
115746
125746
135746
145646
155645
165645
175545
185544
195544
205444
215443
225343
235343
245342
255242
265242
275242
285141
295141
305141
315040

How October really feels in Bar Harbor

Once humidity and wind are folded in, October averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Bar Harbor weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 16°3.910.27.790.0
Feb31° / 17°3.39.3710.10.0
Mar38° / 25°3.910.6611.60.0
Apr48° / 37°3.811.42.413.21.6
May57° / 46°3.311014.63.9
Jun66° / 54°3.610.1015.35.9
Jul72° / 60°2.8100156.7
Aug72° / 60°2.88.3013.87.0
Sep66° / 54°3.77.9012.36.3
Oct56° / 45°4.79.90.210.83.7
Nov45° / 35°4.3101.59.41.1
Dec35° / 24°4.811.66.28.70.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35149
45149
55149
65149
75149
85149
95149
105149
115149
125050
135050
144951
154951
164951
174852
184852
194753
204753
214654
224654
234654
244555
254555
264456
274456
284456
294357
304357
314456

Chance of precipitation in October

Any precipitationSnow

Bar Harbor gets around 4.7 in of rain and snow over 9.9 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 35% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1310
2310
3310
4320
5320
6310
7310
8310
9310
10310
11310
12310
13310
14310
15310
16310
17310
18311
19321
20321
21321
22331
23331
24341
25341
26341
27351
28352
29352
30352
31352

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
180146
282135
383125
486104
58794
68893
79082
89172
99262
109361
119451
129451
139451
149451
159640
169640
179640
189640
199640
209640
219640
229640
239640
249640
259640
269640
279730
289730
299730
309730
319730

Wind in October

Winds average 10 mph in October.

Across October, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 10 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over October. Sunrise moves from 5:36 AM to 6:16 AM, and sunset from 5:07 PM to 4:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.55:365:07
211.55:385:05
311.45:395:03
411.45:405:02
511.35:415:00
611.35:434:58
711.25:444:56
811.15:454:54
911.15:464:52
1011.05:484:51
1111.05:494:49
1210.95:504:47
1310.95:524:45
1410.85:534:44
1510.85:544:42
1610.75:564:40
1710.75:574:38
1810.65:584:37
1910.66:004:35
2010.56:014:33
2110.56:024:32
2210.46:044:30
2310.46:054:29
2410.36:064:27
2510.36:084:26
2610.36:094:24
2710.26:104:23
2810.26:124:21
2910.16:134:20
3010.16:144:18
3110.06:164:17

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.76 kWh/m².

For context, solar energy here swings from a low near 1.41 kWh/m² to a high of 5.84 kWh/m² in July across the year — October's 2.76 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.3Moderate
33.3Moderate
43.3Moderate
53.2Moderate
63.2Moderate
73.1Moderate
83.1Moderate
93.0Moderate
103.0Moderate
113.0Moderate
122.9Moderate
132.9Moderate
142.9Moderate
152.8Moderate
162.8Moderate
172.7Moderate
182.7Moderate
192.6Moderate
202.6Moderate
212.5Moderate
222.5Moderate
232.5Moderate
242.4Moderate
252.4Moderate
262.4Moderate
272.3Moderate
282.3Moderate
292.2Moderate
302.2Moderate
312.2Moderate
Planning a trip in October

Hazard calendar for Bar Harbor

In seasonPeak

In October, Bar Harbor sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Bar Harbor sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Bar Harbor?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.7
Sightseeing
6th-best month of the year
0.1
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Bar Harbor.

What to pack for Bar Harbor in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Bar Harbor sees daytime highs around 56°F and nights near 45°F. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

Sea temperature near Bar Harbor in October

The nearest coast averages about 52°F in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 55°F and coldest in March near 38°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

40°50°60°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°F)Comfort
Jan42Bracing
Feb39Bracing
Mar38Bracing
Apr40Bracing
May44Bracing
Jun48Bracing
Jul53Bracing
Aug55Bracing
Sep54Bracing
Oct52Bracing
Nov49Bracing
Dec46Bracing

UV index in Bar Harbor in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bar Harbor peaks around July 13 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateModerateLowJul 13UV 7Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May7High
Jun6High
Jul8Very high
Aug4Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Bar Harbor?

Bar Harbor sits at 44.4°N, 68.2°W, 0 ft above sea level, in United States. The nearest listed city is Bangor, 40 mi away.

Topography around Bar Harbor

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Bar Harbor.

Within 2 miles, the terrain around Bar Harbor has significant variations in elevation — a maximum elevation change of 938 ft around an average of 105 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,526 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,516 ft.

The land around Bar Harbor is covered by water (52%) and trees (41%) within 2 miles, water (48%) and trees (47%) within 10 miles, and water (49%) and trees (47%) within 50 miles.

2 miles
938 ft
10 miles
1,526 ft
50 miles
1,516 ft
treesgrasslandartificial surfaceswaterwetland
October weather nearby: Bangor 40 mi · Waterville 71 mi · Augusta 78 mi · Brunswick 93 mi · Lewiston 101 mi · Auburn 103 mi · South Portland 114 mi · Portland 114 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Bar Harbor (44.3876°, -68.2039°, elevation 0 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).