Redhill climate — normals and trends
Redhill (South Africa) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 14.9 °C and it receives 906 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 (18.5 °C on average) and the coldest is June (9.7 °C). Rainfall peaks in December.
Redhill averages 4 frost days, 5 hot days (≥ 30 °C) and 135 rainy days per year.
Redhill has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 34.2 °C (on 7 January 2016) and the coldest -3.9 °C (on 12 July 1994).
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
RedhillMpumalanga
- coords
- -26.26°, 30.83°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.9°C
Average daily high
21.7°C
Average daily low
10.1°C
Annual rainfall
906mm
Sunshine / day
9.5h
Mean relative humidity
74%
Average peak wind
12.6km/h
Seasonal range
8.8°C
Frost days (< 0 °C)
4 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
135 d/yr
Annual snowfall
0.9 cm
Average feels-like high
21.5 °C
Average feels-like low
8.7 °C
Average peak gust
33.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
18.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
34.2 °C
7 January 2016
Coldest day
-3.9 °C
12 July 1994
Wettest day
110 mm
30 January 1984
Windiest day
39.9 km/h
23 September 1941
Strongest gust
93.6 km/h
31 August 1979
Hottest feels-like
38.1 °C
6 January 2016
Coldest feels-like
-7.5 °C
29 June 1994
Snowiest day
12.6 cm
7 July 1996
Sunniest day
13.7 h
22 December 1943
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 | 25.5 °C | +1.3 °C | 195 mm | +45 mm |
| Feb | 24.0 °C | 0.0 °C | 129 mm | +4 mm |
| Mar | 23.8 °C | +0.6 °C | 101 mm | +2 mm |
| Apr | 20.6 °C | -0.8 °C | 101 mm | +44 mm |
| May | 20.4 °C | +0.7 °C | 12 mm | -9 mm |
| Jun | 18.3 °C | +0.8 °C | 2 mm | -8 mm |
| Jul | 18.3 °C | +0.5 °C | 8 mm | -0 mm |
| Aug | 22.5 °C | +2.5 °C | 3 mm | -13 mm |
| Sep | 23.1 °C | +0.7 °C | 43 mm | +8 mm |
| Oct | 22.4 °C | -0.4 °C | 77 mm | -15 mm |
| Nov | 21.4 °C | -1.7 °C | 173 mm | +36 mm |
| Dec | 23.5 °C | -0.5 °C | 212 mm | +53 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 Redhill?
Redhill has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 14.9 °C and it receives 906 mm of precipitation per year.
What is the hottest day ever recorded in Redhill?
The hottest day measured in Redhill between 1940 and 2025 was 7 January 2016, reaching 34.2 °C.
What is the coldest day in Redhill?
The coldest day measured in Redhill between 1940 and 2025 was 12 July 1994, at -3.9 °C.
Does it snow in Redhill?
Almost never: Redhill sees virtually no snow, with about 4 frost days per year.
Has the climate of Redhill warmed?
Yes: Redhill warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Redhill?
The wettest day measured in Redhill between 1940 and 2025 was 30 January 1984, with 110 mm of rain in 24 hours.
What was the windiest day in Redhill?
The windiest day measured in Redhill between 1940 and 2025 was 23 September 1941, with winds reaching 39.9 km/h.
What is the warmest month in Redhill?
The warmest month in Redhill is January (18.5 °C on average); the coldest is June (9.7 °C).
How much does it rain in Redhill?
Redhill receives on average 906 mm of precipitation per year, spread over about 135 rainy days.
Is it sunny in Redhill?
Redhill gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
What is the biggest single-day snowfall in Redhill?
The heaviest 24-hour snowfall measured in Redhill between 1940 and 2025 was 7 July 1996, with 12.6 cm.
Are there tropical nights in Redhill?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Redhill.
What was the most extreme apparent temperature in Redhill?
In Redhill, between 1940 and 2025, the highest apparent temperature reached 38.1 °C on 6 January 2016, and the lowest was -7.5 °C on 29 June 1994.
Compare Redhill with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Redhill