Savannah climate — normals and trends
Savannah (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.5 °C and it receives 1,146 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 (27.2 °C on average) and the coldest is January (11.0 °C). Rainfall peaks in August.
Savannah averages 4 frost days, 41 hot days (≥ 30 °C) and 133 rainy days per year.
Savannah has warmed by +0.6 °C between 1940 and 2025, or +0.07 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.8 °C (on 24 June 1944) and the coldest -12.6 °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
SavannahGeorgia
- coords
- 32.08°, -81.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.5°C
Average daily high
22.6°C
Average daily low
16.7°C
Annual rainfall
1,146mm
Sunshine / day
9.8h
Mean relative humidity
76%
Average peak wind
21.1km/h
Seasonal range
16.2°C
Frost days (< 0 °C)
4 d/yr
Hot days (≥ 30 °C)
41 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
0.6 cm
Average feels-like high
23.6 °C
Average feels-like low
16.3 °C
Average peak gust
35.6 km/h
Tropical nights (≥ 20 °C)
151 d/yr
Solar radiation
17.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.6 °C
since 1940
+0.1 °C per decade · r² = 0.10 · p = 0.002
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
36.8 °C
24 June 1944
Coldest day
-12.6 °C
21 January 1985
Wettest day
145 mm
2 September 2007
Windiest day
73.9 km/h
11 September 2017
Strongest gust
131.0 km/h
11 September 2017
Hottest feels-like
44.5 °C
1 August 1999
Coldest feels-like
-20.0 °C
21 January 1985
Snowiest day
10.2 cm
23 December 1989
Sunniest day
13.5 h
22 June 1944
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 | 11.7 °C | -2.9 °C | 72 mm | -12 mm |
| Feb | 17.5 °C | +1.8 °C | 58 mm | -27 mm |
| Mar | 19.5 °C | +1.2 °C | 114 mm | +21 mm |
| Apr | 23.5 °C | +1.5 °C | 22 mm | -42 mm |
| May | 27.5 °C | +1.7 °C | 169 mm | +101 mm |
| Jun | 29.4 °C | +0.7 °C | 107 mm | -5 mm |
| Jul | 30.9 °C | +0.9 °C | 122 mm | -8 mm |
| Aug | 29.0 °C | -0.5 °C | 414 mm | +255 mm |
| Sep | 27.6 °C | 0.0 °C | 54 mm | -80 mm |
| Oct | 23.0 °C | -0.9 °C | 141 mm | +57 mm |
| Nov | 20.2 °C | +0.7 °C | 18 mm | -40 mm |
| Dec | 15.5 °C | -0.4 °C | 62 mm | -14 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 Savannah?
Savannah has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.5 °C and it receives 1,146 mm of precipitation per year.
What is the hottest day ever recorded in Savannah?
The hottest day measured in Savannah between 1940 and 2025 was 24 June 1944, reaching 36.8 °C.
What is the coldest day in Savannah?
The coldest day measured in Savannah between 1940 and 2025 was 21 January 1985, at -12.6 °C.
Does it snow in Savannah?
Almost never: Savannah sees virtually no snow, with about 4 frost days per year.
Has the climate of Savannah warmed?
Yes: Savannah warmed by +0.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Savannah?
The wettest day measured in Savannah between 1940 and 2025 was 2 September 2007, with 145 mm of rain in 24 hours.
What was the windiest day in Savannah?
The windiest day measured in Savannah between 1940 and 2025 was 11 September 2017, with winds reaching 73.9 km/h.
What is the warmest month in Savannah?
The warmest month in Savannah is July (27.2 °C on average); the coldest is January (11.0 °C).
How much does it rain in Savannah?
Savannah receives on average 1,146 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Savannah?
Savannah 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 Savannah?
The heaviest 24-hour snowfall measured in Savannah between 1940 and 2025 was 23 December 1989, with 10.2 cm.
Are there tropical nights in Savannah?
Yes: Savannah has on average 151 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Savannah?
In Savannah, between 1940 and 2025, the highest apparent temperature reached 44.5 °C on 1 August 1999, and the lowest was -20.0 °C on 21 January 1985.
Compare Savannah with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Savannah