Bar Harbor weather in March

In March, Bar Harbor sees average daytime highs of 38°F and overnight lows near 25°F, with 3.9 in of precipitation across 10.6 wet days and about 11.6 hours of daylight. It is the 9th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 34°F in the first days to 41°F by the end. The sky is clear or mostly clear about 27% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Bar Harbor's 9th-clearest and 4th-windiest month. For the whole year in context, see Bar Harbor's year-round climate.

Daytime high
38°
9th warmest
Overnight low
25°
4th coldest
Precipitation
3.9 in
10.6 wet days
Daylight
11 h 36 min
5:54 AM – 5:31 PM
Cloud cover
63%
9th clearest
Wind
10 mph
4th windiest
Solar energy
3.96 kWh/m²
Travel score
0.0
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 March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 34°F in the first days to 41°F by the end.

A typical March day in Bar Harbor reaches about 38°F in the afternoon and slips back to 25°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 29°F and 46°F. Set against its neighbours, March runs about 6°F warmer than February and about 10°F cooler than April.

10°20°30°40°50°151015202531
Avg high (°F)Avg low (°F)
13421
23421
33421
43522
53522
63522
73522
83523
93623
103623
113624
123724
133724
143724
153725
163725
173825
183826
193826
203826
213927
223927
233928
244028
254028
264029
274129
284130
294130
304231
314231

How March really feels in Bar Harbor

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 31 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
31
13 feel bitter (≤ 14°F)

The story in March is cold — wind chill drags the overnight "feels like" below the raw low.

Bar Harbor weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 5th-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 March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 14% of March, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34159
44060
54060
64060
73961
83961
94060
104060
114060
124159
134159
144258
154357
164357
174357
184456
194456
204456
214456
224456
234456
244456
254357
264258
274159
284060
293961
303862
313862

Chance of precipitation in March

Any precipitationSnow

Bar Harbor gets around 3.9 in of rain and snow over 10.6 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 34% and peaks near 36% on the wettest days, and about 6 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13623
23623
33622
43622
53622
63622
73622
83622
93622
103522
113521
123521
133521
143421
153421
163420
173320
183319
193219
203218
213218
223217
233217
243216
253316
263316
273416
283415
293415
303515
313515

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in March

Winds average 10 mph in March.

Across March, daily wind ranges from about 10 mph on the calmest days to 11 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
111light breeze
211light breeze
311light breeze
411light breeze
511light breeze
611light breeze
711light breeze
811light breeze
911light breeze
1011light breeze
1111light 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 March

DaylightNight

Daylight runs from about 10 h 48 min at the start of March to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 96 minutes over March. Sunrise moves from 6:21 AM to 5:26 AM, and sunset from 5:11 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:215:11
210.96:195:13
310.96:175:14
411.06:165:15
511.06:145:17
611.16:125:18
711.16:105:19
811.26:095:21
911.36:075:22
1011.36:055:23
1111.46:035:25
1211.46:015:26
1311.55:595:27
1411.55:585:28
1511.65:565:30
1611.65:545:31
1711.75:525:32
1811.75:505:34
1911.85:485:35
2011.85:465:36
2111.95:455:37
2211.95:435:39
2312.05:415:40
2412.05:395:41
2512.15:375:42
2612.15:355:44
2712.25:335:45
2812.35:315:46
2912.35:295:48
3012.45:275:49
3112.45:265:50

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 3.96 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 — March's 3.96 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
13.3Moderate
23.3Moderate
33.4Moderate
43.4Moderate
53.4Moderate
63.5Moderate
73.5Moderate
83.6Moderate
93.6Moderate
103.7Moderate
113.7Moderate
123.8Moderate
133.8Moderate
143.9Moderate
154.0Moderate
164.0Bright
174.1Bright
184.1Bright
194.2Bright
204.2Bright
214.2Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in March

Hazard calendar for Bar Harbor

In seasonPeak

None of Bar Harbor's seasonal hazards are active in March. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 March a good time to visit Bar Harbor?

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

0.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
7th-best month of the year

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

What to pack for Bar Harbor in March

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

In March, Bar Harbor sees daytime highs around 38°F and nights near 25°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Bar Harbor in March

The nearest coast averages about 38°F in March — 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 March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. 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
March 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).