Wesselsbron climate — normals and trends
Wesselsbron (South Africa) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 17.5 °C and it receives 579 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 January (23.6 °C on average) and the coldest is June (9.4 °C). Rainfall peaks in January.
Wesselsbron averages 17 frost days, 85 hot days (≥ 30 °C) and 85 rainy days per year.
Wesselsbron has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The number of frost days there went from about 14 to 20 per year over the period.
The hottest day of the period reached 41.0 °C (on 6 January 2016) and the coldest -6.5 °C (on 19 July 1995).
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
WesselsbronFree State
- coords
- -27.85°, 26.37°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.5°C
Average daily high
25.4°C
Average daily low
11.0°C
Annual rainfall
579mm
Sunshine / day
11.0h
Mean relative humidity
55%
Average peak wind
16.7km/h
Seasonal range
14.2°C
Frost days (< 0 °C)
17 d/yr
Hot days (≥ 30 °C)
85 d/yr
Rainy days (≥ 1 mm)
85 d/yr
Annual snowfall
0.0 cm
Average feels-like high
24.3 °C
Average feels-like low
9.0 °C
Average peak gust
34.2 km/h
Tropical nights (≥ 20 °C)
10 d/yr
Solar radiation
21.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.14 · 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
41.0 °C
6 January 2016
Coldest day
-6.5 °C
19 July 1995
Wettest day
95 mm
22 December 1956
Windiest day
51.7 km/h
31 October 1985
Strongest gust
91.8 km/h
31 October 1985
Hottest feels-like
40.2 °C
6 January 2016
Coldest feels-like
-11.1 °C
19 July 1995
Snowiest day
2.5 cm
7 July 1996
Sunniest day
13.7 h
16 December 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 | 33.1 °C | +2.8 °C | 32 mm | -63 mm |
| Feb | 30.6 °C | +1.5 °C | 85 mm | -3 mm |
| Mar | 27.7 °C | 0.0 °C | 104 mm | +32 mm |
| Apr | 22.6 °C | -2.0 °C | 189 mm | +137 mm |
| May | 22.2 °C | +0.6 °C | 1 mm | -18 mm |
| Jun | 19.8 °C | +1.3 °C | 6 mm | -3 mm |
| Jul | 20.4 °C | +1.7 °C | 8 mm | +1 mm |
| Aug | 24.5 °C | +2.8 °C | 6 mm | -6 mm |
| Sep | 27.8 °C | +2.0 °C | 39 mm | +21 mm |
| Oct | 28.9 °C | +0.9 °C | 56 mm | +4 mm |
| Nov | 27.1 °C | -1.8 °C | 120 mm | +47 mm |
| Dec | 29.8 °C | -0.3 °C | 92 mm | +7 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 Wesselsbron?
Wesselsbron has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 17.5 °C and it receives 579 mm of precipitation per year.
What is the hottest day ever recorded in Wesselsbron?
The hottest day measured in Wesselsbron between 1940 and 2025 was 6 January 2016, reaching 41.0 °C.
What is the coldest day in Wesselsbron?
The coldest day measured in Wesselsbron between 1940 and 2025 was 19 July 1995, at -6.5 °C.
Does it snow in Wesselsbron?
Almost never: Wesselsbron sees virtually no snow, with about 17 frost days per year.
Has the climate of Wesselsbron warmed?
Yes: Wesselsbron warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wesselsbron?
The wettest day measured in Wesselsbron between 1940 and 2025 was 22 December 1956, with 95 mm of rain in 24 hours.
What was the windiest day in Wesselsbron?
The windiest day measured in Wesselsbron between 1940 and 2025 was 31 October 1985, with winds reaching 51.7 km/h.
What is the warmest month in Wesselsbron?
The warmest month in Wesselsbron is January (23.6 °C on average); the coldest is June (9.4 °C).
How much does it rain in Wesselsbron?
Wesselsbron receives on average 579 mm of precipitation per year, spread over about 85 rainy days.
Is it sunny in Wesselsbron?
Wesselsbron gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.
What is the biggest single-day snowfall in Wesselsbron?
The heaviest 24-hour snowfall measured in Wesselsbron between 1940 and 2025 was 7 July 1996, with 2.5 cm.
Are there tropical nights in Wesselsbron?
Yes: Wesselsbron has on average 10 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Wesselsbron?
In Wesselsbron, between 1940 and 2025, the highest apparent temperature reached 40.2 °C on 6 January 2016, and the lowest was -11.1 °C on 19 July 1995.
Compare Wesselsbron with another city
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Nearby cities
The climate around Wesselsbron