Brunswick climate — normals and trends
Brunswick (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.8 °C and it receives 1,101 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (27.1 °C on average) and the coldest is January (11.4 °C). Rainfall peaks in August.
Brunswick averages 5 frost days, 68 hot days (≥ 30 °C) and 137 rainy days per year.
Brunswick has warmed by +0.8 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.1 °C (on 24 June 1944) and the coldest -13.0 °C (on 21 January 1985).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
BrunswickGeorgia
- coords
- 31.15°, -81.49°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.8°C
Average daily high
23.9°C
Average daily low
16.4°C
Annual rainfall
1,101mm
Sunshine / day
9.8h
Mean relative humidity
75%
Average peak wind
18.2km/h
Seasonal range
15.7°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
68 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
0.3 cm
Average feels-like high
25.1 °C
Average feels-like low
16.3 °C
Average peak gust
34.6 km/h
Tropical nights (≥ 20 °C)
148 d/yr
Solar radiation
17.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.15 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
39.1 °C
24 June 1944
Coldest day
-13.0 °C
21 January 1985
Wettest day
150 mm
7 October 2016
Windiest day
74.6 km/h
11 September 2017
Strongest gust
151.2 km/h
11 September 2017
Hottest feels-like
44.9 °C
1 August 1999
Coldest feels-like
-20.5 °C
21 January 1985
Snowiest day
8.3 cm
23 December 1989
Sunniest day
13.3 h
21 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 13.3 °C | -2.6 °C | 101 mm | +22 mm |
| Feb | 19.6 °C | +2.3 °C | 54 mm | -21 mm |
| Mar | 21.1 °C | +0.9 °C | 110 mm | +25 mm |
| Apr | 25.5 °C | +1.7 °C | 26 mm | -35 mm |
| May | 29.0 °C | +1.6 °C | 194 mm | +128 mm |
| Jun | 30.3 °C | +0.4 °C | 121 mm | +3 mm |
| Jul | 32.1 °C | +1.2 °C | 93 mm | -37 mm |
| Aug | 30.1 °C | -0.2 °C | 295 mm | +139 mm |
| Sep | 28.6 °C | +0.2 °C | 57 mm | -78 mm |
| Oct | 24.1 °C | -0.8 °C | 104 mm | +27 mm |
| Nov | 22.1 °C | +1.5 °C | 7 mm | -46 mm |
| Dec | 17.3 °C | +0.2 °C | 68 mm | +2 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Brunswick?
Brunswick has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.8 °C and it receives 1,101 mm of precipitation per year.
What is the hottest day ever recorded in Brunswick?
The hottest day measured in Brunswick between 1940 and 2025 was 24 June 1944, reaching 39.1 °C.
What is the coldest day in Brunswick?
The coldest day measured in Brunswick between 1940 and 2025 was 21 January 1985, at -13.0 °C.
Does it snow in Brunswick?
Almost never: Brunswick sees virtually no snow, with about 5 frost days per year.
Has the climate of Brunswick warmed?
Yes: Brunswick warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Brunswick?
The wettest day measured in Brunswick between 1940 and 2025 was 7 October 2016, with 150 mm of rain in 24 hours.
What was the windiest day in Brunswick?
The windiest day measured in Brunswick between 1940 and 2025 was 11 September 2017, with winds reaching 74.6 km/h.
What is the warmest month in Brunswick?
The warmest month in Brunswick is July (27.1 °C on average); the coldest is January (11.4 °C).
How much does it rain in Brunswick?
Brunswick receives on average 1,101 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Brunswick?
Brunswick gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Brunswick?
The heaviest 24-hour snowfall measured in Brunswick between 1940 and 2025 was 23 December 1989, with 8.3 cm.
Are there tropical nights in Brunswick?
Yes: Brunswick has on average 148 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Brunswick?
In Brunswick, between 1940 and 2025, the highest apparent temperature reached 44.9 °C on 1 August 1999, and the lowest was -20.5 °C on 21 January 1985.
Compare Brunswick with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Brunswick