Zeerust climate — normals and trends
Zeerust (South Africa) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 18.4 °C and it receives 637 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 (23.0 °C on average) and the coldest is June (11.5 °C). Rainfall peaks in December.
Zeerust averages 1 frost days, 63 hot days (≥ 30 °C) and 93 rainy days per year.
Zeerust has warmed by +0.9 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.6 °C (on 7 January 2016) and the coldest -3.2 °C (on 9 July 2024).
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
ZeerustNorth West
- coords
- -25.54°, 26.08°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.4°C
Average daily high
25.1°C
Average daily low
12.9°C
Annual rainfall
637mm
Sunshine / day
10.9h
Mean relative humidity
56%
Average peak wind
16.3km/h
Seasonal range
11.5°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
63 d/yr
Rainy days (≥ 1 mm)
93 d/yr
Annual snowfall
0.0 cm
Average feels-like high
24.5 °C
Average feels-like low
11.1 °C
Average peak gust
35.2 km/h
Tropical nights (≥ 20 °C)
15 d/yr
Solar radiation
20.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °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
40.6 °C
7 January 2016
Coldest day
-3.2 °C
9 July 2024
Wettest day
104 mm
10 December 2019
Windiest day
40.3 km/h
12 September 1996
Strongest gust
81.4 km/h
17 August 2002
Hottest feels-like
41.3 °C
7 January 2016
Coldest feels-like
-7.4 °C
9 July 2024
Sunniest day
13.6 h
17 December 1940
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 | 27.5 °C | -1.1 °C | 186 mm | +78 mm |
| Feb | 26.6 °C | -1.2 °C | 309 mm | +204 mm |
| Mar | 25.8 °C | -0.7 °C | 81 mm | +2 mm |
| Apr | 22.6 °C | -1.6 °C | 120 mm | +65 mm |
| May | 21.4 °C | -0.5 °C | 11 mm | -6 mm |
| Jun | 19.8 °C | +0.6 °C | 3 mm | -4 mm |
| Jul | 20.0 °C | +0.6 °C | 4 mm | +0 mm |
| Aug | 24.5 °C | +2.0 °C | 1 mm | -6 mm |
| Sep | 28.4 °C | +2.0 °C | 12 mm | -3 mm |
| Oct | 28.5 °C | +0.2 °C | 35 mm | -15 mm |
| Nov | 26.0 °C | -2.3 °C | 100 mm | +18 mm |
| Dec | 27.1 °C | -1.4 °C | 149 mm | +40 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 Zeerust?
Zeerust has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 18.4 °C and it receives 637 mm of precipitation per year.
What is the hottest day ever recorded in Zeerust?
The hottest day measured in Zeerust between 1940 and 2025 was 7 January 2016, reaching 40.6 °C.
What is the coldest day in Zeerust?
The coldest day measured in Zeerust between 1940 and 2025 was 9 July 2024, at -3.2 °C.
Does it snow in Zeerust?
Almost never: Zeerust sees virtually no snow, with about 1 frost days per year.
Has the climate of Zeerust warmed?
Yes: Zeerust warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zeerust?
The wettest day measured in Zeerust between 1940 and 2025 was 10 December 2019, with 104 mm of rain in 24 hours.
What was the windiest day in Zeerust?
The windiest day measured in Zeerust between 1940 and 2025 was 12 September 1996, with winds reaching 40.3 km/h.
What is the warmest month in Zeerust?
The warmest month in Zeerust is January (23.0 °C on average); the coldest is June (11.5 °C).
How much does it rain in Zeerust?
Zeerust receives on average 637 mm of precipitation per year, spread over about 93 rainy days.
Is it sunny in Zeerust?
Zeerust gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Zeerust?
Yes: Zeerust has on average 15 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zeerust?
In Zeerust, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 7 January 2016, and the lowest was -7.4 °C on 9 July 2024.
Compare Zeerust with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zeerust