Brunswick weather in March

In March, Brunswick sees average daytime highs of 40°F and overnight lows near 25°F, with 3.9 in of precipitation across 10.2 wet days and about 11.6 hours of daylight. It is the 9th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 36°F in the first days to 44°F by the end. The sky is clear or mostly clear about 29% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Brunswick's 9th-clearest and 1st-windiest month. For the whole year in context, see Brunswick's year-round climate.

Daytime high
40°
9th warmest
Overnight low
25°
4th coldest
Precipitation
3.9 in
10.2 wet days
Daylight
11 h 36 min
6:01 AM – 5:38 PM
Cloud cover
62%
9th clearest
Wind
8 mph
1st windiest
Solar energy
3.99 kWh/m²
Travel score
0.2
out of 10

Brunswick is town in Cumberland County, Maine, United States.

Founded
1628

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 36°F in the first days to 44°F by the end.

A typical March day in Brunswick reaches about 40°F in the afternoon and slips back to 25°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 29°F and 50°F. Set against its neighbours, March runs about 8°F warmer than February and about 12°F cooler than April.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
13520
23521
33621
43621
53622
63722
73722
83722
93723
103823
113823
123824
133824
143924
153925
163925
174025
184026
194026
204126
214127
224127
234228
244228
254329
264329
274430
284430
294431
304531
314531

How March really feels in Brunswick

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
10 feel bitter (≤ 14°F)

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

Brunswick weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 15°3.39.26.89.10.0
Feb32° / 16°3.08.76.610.20.0
Mar40° / 25°3.910.25.911.60.2
Apr51° / 37°3.810.72.113.22.6
May62° / 46°3.110.60.114.55.1
Jun71° / 56°3.610.7015.26.4
Jul77° / 62°3.19.9014.96.8
Aug76° / 61°3.18.7013.87.2
Sep69° / 54°3.48.6012.36.6
Oct57° / 44°4.59.90.210.84.2
Nov46° / 33°3.69.51.89.51.2
Dec36° / 22°4.1116.28.80.0

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 13% of March, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34060
44060
54060
64060
74060
84060
94060
104159
114258
124258
134357
144357
154456
164456
174555
184555
194555
204654
214654
224555
234555
244555
254456
264456
274357
284258
294159
304060
314060

Chance of precipitation in March

Any precipitationSnow

Brunswick gets around 3.9 in of rain and snow over 10.2 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 33% and peaks near 37% on the wettest days, and about 6 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13221
23221
33221
43220
53320
63320
73320
83320
93320
103320
113320
123320
133320
143320
153320
163220
173220
183220
193220
203219
213219
223218
233218
243317
253417
263417
273516
283516
293615
303615
313714

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 8 mph in March, the windiest month of the year.

Across March, daily wind ranges from about 8 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 10 h 54 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 90 minutes over March. Sunrise moves from 6:27 AM to 5:33 AM, and sunset from 5:19 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.96:275:19
210.96:265:20
311.06:245:22
411.06:225:23
511.16:205:24
611.16:195:26
711.26:175:27
811.26:155:28
911.36:135:29
1011.36:125:31
1111.46:105:32
1211.46:085:33
1311.56:065:34
1411.56:045:36
1511.66:035:37
1611.66:015:38
1711.75:595:40
1811.75:575:41
1911.85:555:42
2011.85:535:43
2111.95:525:45
2211.95:505:46
2312.05:485:47
2412.05:465:48
2512.15:445:49
2612.15:425:51
2712.25:405:52
2812.25:385:53
2912.35:375:54
3012.35:355:56
3112.45:335:57

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 3.99 kWh/m².

For context, solar energy here swings from a low near 1.48 kWh/m² to a high of 5.99 kWh/m² in July across the year — March's 3.99 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
13.3Moderate
23.4Moderate
33.4Moderate
43.4Moderate
53.5Moderate
63.5Moderate
73.6Moderate
83.6Moderate
93.7Moderate
103.7Moderate
113.8Moderate
123.8Moderate
133.9Moderate
143.9Moderate
154.0Bright
164.0Bright
174.1Bright
184.2Bright
194.2Bright
204.2Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in March

Hazard calendar for Brunswick

In seasonPeak

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

Brunswick 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 Brunswick?

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

0.2
Sightseeing
9th-best month of the year
0.0
Beach & pool
8th-best month of the year

March is a weaker month for outdoor sightseeing in Brunswick.

What to pack for Brunswick in March

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

In March, Brunswick sees daytime highs around 40°F and nights near 25°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Brunswick 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 at the nearest coast (about 17 mi away) is warmest in August at about 62°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
Jan41Bracing
Feb38Bracing
Mar38Bracing
Apr41Bracing
May47Bracing
Jun54Bracing
Jul60Cool
Aug62Cool
Sep58Bracing
Oct54Bracing
Nov49Bracing
Dec45Bracing

UV index in Brunswick 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 Brunswick peaks around July 12 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 12UV 7Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul7Very high
Aug4Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Brunswick?

Brunswick sits at 43.9°N, 70.0°W, 62 ft above sea level, in United States. The nearest listed city is Lewiston, 18 mi away.

Topography around Brunswick

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

Within 2 miles, the terrain around Brunswick has only modest variations in elevation — a maximum elevation change of 249 ft around an average of 92 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 456 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,526 ft.

The land around Brunswick is covered by trees (60%) within 2 miles, trees (68%) within 10 miles, and trees (62%) and water (33%) within 50 miles.

2 miles
249 ft
10 miles
456 ft
50 miles
2,526 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
March weather nearby: Lewiston 18 mi · Auburn 18 mi · Portland 23 mi · South Portland 24 mi · South Portland Gardens 26 mi · Westbrook 26 mi · Augusta 29 mi · West Scarborough 32 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 Brunswick (43.9145°, -69.9653°, elevation 62 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).