Bluffton climate — normals and trends
Bluffton (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.3 °C and it receives 1,135 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 (10.8 °C). Rainfall peaks in August.
Bluffton averages 5 frost days, 44 hot days (≥ 30 °C) and 131 rainy days per year.
Bluffton 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 37.1 °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
BlufftonSouth Carolina
- coords
- 32.24°, -80.86°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.3°C
Average daily high
22.7°C
Average daily low
16.5°C
Annual rainfall
1,135mm
Sunshine / day
9.8h
Mean relative humidity
76%
Average peak wind
20.6km/h
Seasonal range
16.4°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
44 d/yr
Rainy days (≥ 1 mm)
131 d/yr
Annual snowfall
0.6 cm
Average feels-like high
23.7 °C
Average feels-like low
16.0 °C
Average peak gust
35.9 km/h
Tropical nights (≥ 20 °C)
147 d/yr
Solar radiation
17.0 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 = 0.003
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
37.1 °C
24 June 1944
Coldest day
-12.6 °C
21 January 1985
Wettest day
142 mm
18 June 1982
Windiest day
71.0 km/h
21 September 1989
Strongest gust
120.6 km/h
27 September 2024
Hottest feels-like
44.7 °C
1 August 1999
Coldest feels-like
-19.6 °C
21 January 1985
Snowiest day
10.6 cm
23 December 1989
Sunniest day
13.5 h
2 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 | 11.6 °C | -3.0 °C | 62 mm | -20 mm |
| Feb | 17.5 °C | +1.7 °C | 53 mm | -31 mm |
| Mar | 19.5 °C | +1.0 °C | 114 mm | +23 mm |
| Apr | 23.5 °C | +1.4 °C | 18 mm | -45 mm |
| May | 27.5 °C | +1.5 °C | 159 mm | +91 mm |
| Jun | 29.7 °C | +0.9 °C | 110 mm | -1 mm |
| Jul | 31.0 °C | +0.9 °C | 131 mm | -2 mm |
| Aug | 29.0 °C | -0.6 °C | 411 mm | +252 mm |
| Sep | 27.8 °C | +0.1 °C | 56 mm | -72 mm |
| Oct | 23.0 °C | -0.9 °C | 141 mm | +57 mm |
| Nov | 20.2 °C | +0.7 °C | 15 mm | -41 mm |
| Dec | 15.4 °C | -0.5 °C | 57 mm | -18 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 Bluffton?
Bluffton has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.3 °C and it receives 1,135 mm of precipitation per year.
What is the hottest day ever recorded in Bluffton?
The hottest day measured in Bluffton between 1940 and 2025 was 24 June 1944, reaching 37.1 °C.
What is the coldest day in Bluffton?
The coldest day measured in Bluffton between 1940 and 2025 was 21 January 1985, at -12.6 °C.
Does it snow in Bluffton?
Almost never: Bluffton sees virtually no snow, with about 5 frost days per year.
Has the climate of Bluffton warmed?
Yes: Bluffton warmed by +0.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bluffton?
The wettest day measured in Bluffton between 1940 and 2025 was 18 June 1982, with 142 mm of rain in 24 hours.
What was the windiest day in Bluffton?
The windiest day measured in Bluffton between 1940 and 2025 was 21 September 1989, with winds reaching 71.0 km/h.
What is the warmest month in Bluffton?
The warmest month in Bluffton is July (27.2 °C on average); the coldest is January (10.8 °C).
How much does it rain in Bluffton?
Bluffton receives on average 1,135 mm of precipitation per year, spread over about 131 rainy days.
Is it sunny in Bluffton?
Bluffton 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 Bluffton?
The heaviest 24-hour snowfall measured in Bluffton between 1940 and 2025 was 23 December 1989, with 10.6 cm.
Are there tropical nights in Bluffton?
Yes: Bluffton has on average 147 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bluffton?
In Bluffton, between 1940 and 2025, the highest apparent temperature reached 44.7 °C on 1 August 1999, and the lowest was -19.6 °C on 21 January 1985.
Compare Bluffton with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bluffton