Brunswick weather in January

In January, Brunswick sees average daytime highs of 30°F and overnight lows near 15°F, with 3.3 in of precipitation across 9.2 wet days and about 9.1 hours of daylight. It is the 12th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°F through the month. The sky is clear or mostly clear about 39% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 48 min at the start of January to 9 h 36 min by month's end. Set against the rest of the year, January is Brunswick's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Brunswick's year-round climate.

Daytime high
30°
12th warmest
Overnight low
15°
1st coldest
Precipitation
3.3 in
9.2 wet days
Daylight
9 h 06 min
7:17 AM – 4:21 PM
Cloud cover
55%
2nd clearest
Wind
8 mph
2nd windiest
Solar energy
1.9 kWh/m²
Travel score
0.0
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°F through the month.

A typical January day in Brunswick reaches about 30°F in the afternoon and slips back to 15°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 15°F and 43°F. Set against its neighbours, January runs about 6°F cooler than December and about 2°F cooler than February.

20°40°151015202531
Avg high (°F)Avg low (°F)
13218
23117
33117
43117
53117
63116
73016
83016
93016
103015
113015
123015
133015
142915
152915
162914
172914
182914
192914
202914
212914
222914
232914
242914
252914
262914
272914
282914
292914
302914
313014

How January really feels in Brunswick

Once humidity and wind are folded in, January 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
31 feel bitter (≤ 14°F)

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

Brunswick weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 8th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 13% of January, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35149
45149
55149
65149
75050
85050
95050
105050
115050
125050
135050
145149
155149
165149
175149
185248
195248
205248
215248
225347
235347
245347
255347
265347
275446
285446
295446
305446
315446

Chance of precipitation in January

Any precipitationSnow

Brunswick gets around 3.3 in of rain and snow over 9.2 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 30% and peaks near 33% on the wettest days, and about 7 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13323
23223
33223
43123
53123
63123
73123
83022
93022
103022
113023
123023
133023
143023
153023
163023
173022
183022
193022
203022
213022
223022
232922
242922
252922
262922
272922
282922
292922
302923
312923

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January 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 January

Winds average 8 mph in January.

Across January, 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 January

DaylightNight

Daylight runs from about 8 h 48 min at the start of January to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 7:20 AM to 7:07 AM, and sunset from 4:06 PM to 4:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.87:204:06
28.87:204:07
38.87:204:08
48.87:204:09
58.87:204:09
68.87:204:10
78.97:204:11
88.97:204:12
98.97:204:13
108.97:194:14
118.97:194:15
129.07:194:16
139.07:194:18
149.07:184:19
159.07:184:20
169.17:174:21
179.17:174:22
189.17:164:23
199.17:164:24
209.27:154:26
219.27:154:27
229.27:144:28
239.37:134:29
249.37:134:31
259.37:124:32
269.47:114:33
279.47:104:35
289.47:094:36
299.57:084:37
309.57:084:38
319.67:074:40

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.9 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 — January's 1.9 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.6Dim
51.6Dim
61.7Dim
71.7Dim
81.7Dim
91.7Dim
101.7Dim
111.7Dim
121.8Dim
131.8Dim
141.8Dim
151.8Dim
161.9Dim
171.9Dim
181.9Dim
191.9Dim
202.0Dim
212.0Moderate
222.0Moderate
232.1Moderate
242.1Moderate
252.1Moderate
262.2Moderate
272.2Moderate
282.3Moderate
292.3Moderate
302.3Moderate
312.4Moderate
Planning a trip in January

Hazard calendar for Brunswick

In seasonPeak

None of Brunswick's seasonal hazards are active in January. 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 January a good time to visit Brunswick?

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

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
8th-best month of the year

January is a weaker month for outdoor sightseeing in Brunswick.

What to pack for Brunswick in January

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

In January, Brunswick sees daytime highs around 30°F and nights near 15°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Brunswick in January

The nearest coast averages about 41°F in January — 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 January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. 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
January 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).