Barberton climate — normals and trends
Barberton (South Africa) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 17.9 °C and it receives 783 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 (21.6 °C on average) and the coldest is June (12.7 °C). Rainfall peaks in December.
Barberton averages 0 frost days, 40 hot days (≥ 30 °C) and 117 rainy days per year.
Barberton has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.6 °C (on 26 February 1992) and the coldest -2.2 °C (on 28 June 1964).
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
BarbertonMpumalanga
- coords
- -25.79°, 31.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.9°C
Average daily high
24.5°C
Average daily low
12.8°C
Annual rainfall
783mm
Sunshine / day
9.5h
Mean relative humidity
72%
Average peak wind
10.4km/h
Seasonal range
8.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
40 d/yr
Rainy days (≥ 1 mm)
117 d/yr
Annual snowfall
0.0 cm
Average feels-like high
25.4 °C
Average feels-like low
12.5 °C
Average peak gust
30.0 km/h
Tropical nights (≥ 20 °C)
5 d/yr
Solar radiation
17.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.31 · 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
38.6 °C
26 February 1992
Coldest day
-2.2 °C
28 June 1964
Wettest day
142 mm
11 December 1942
Windiest day
31.8 km/h
23 September 1941
Strongest gust
81.7 km/h
29 January 1984
Hottest feels-like
40.9 °C
26 February 1992
Coldest feels-like
-5.7 °C
28 June 1964
Sunniest day
13.6 h
26 December 2024
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 | 27.7 °C | +0.8 °C | 216 mm | +83 mm |
| Feb | 26.8 °C | +0.1 °C | 106 mm | -14 mm |
| Mar | 26.8 °C | +0.7 °C | 66 mm | -23 mm |
| Apr | 23.7 °C | -0.7 °C | 92 mm | +37 mm |
| May | 23.7 °C | +0.8 °C | 9 mm | -11 mm |
| Jun | 22.2 °C | +1.2 °C | 1 mm | -7 mm |
| Jul | 21.8 °C | +0.8 °C | 8 mm | +1 mm |
| Aug | 25.1 °C | +2.3 °C | 2 mm | -11 mm |
| Sep | 25.5 °C | +0.7 °C | 31 mm | +3 mm |
| Oct | 25.0 °C | -0.2 °C | 62 mm | -3 mm |
| Nov | 24.2 °C | -1.5 °C | 129 mm | +25 mm |
| Dec | 25.7 °C | -0.8 °C | 178 mm | +38 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 Barberton?
Barberton has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 17.9 °C and it receives 783 mm of precipitation per year.
What is the hottest day ever recorded in Barberton?
The hottest day measured in Barberton between 1940 and 2025 was 26 February 1992, reaching 38.6 °C.
What is the coldest day in Barberton?
The coldest day measured in Barberton between 1940 and 2025 was 28 June 1964, at -2.2 °C.
Does it snow in Barberton?
Almost never: Barberton sees virtually no snow, with about 0 frost days per year.
Has the climate of Barberton warmed?
Yes: Barberton warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Barberton?
The wettest day measured in Barberton between 1940 and 2025 was 11 December 1942, with 142 mm of rain in 24 hours.
What was the windiest day in Barberton?
The windiest day measured in Barberton between 1940 and 2025 was 23 September 1941, with winds reaching 31.8 km/h.
What is the warmest month in Barberton?
The warmest month in Barberton is January (21.6 °C on average); the coldest is June (12.7 °C).
How much does it rain in Barberton?
Barberton receives on average 783 mm of precipitation per year, spread over about 117 rainy days.
Is it sunny in Barberton?
Barberton gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
Are there tropical nights in Barberton?
Yes: Barberton has on average 5 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Barberton?
In Barberton, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 26 February 1992, and the lowest was -5.7 °C on 28 June 1964.
Compare Barberton with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Barberton