Caledon climate — normals and trends
Caledon (South Africa) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 15.7 °C and it receives 433 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 (20.5 °C on average) and the coldest is July (10.7 °C). Rainfall peaks in June.
Caledon averages 0 frost days, 18 hot days (≥ 30 °C) and 83 rainy days per year.
Caledon has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.4 °C (on 12 November 1972) and the coldest -1.2 °C (on 5 August 1942).
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
CaledonWestern Cape
- coords
- -34.23°, 19.43°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.7°C
Average daily high
21.3°C
Average daily low
11.4°C
Annual rainfall
433mm
Sunshine / day
10.6h
Mean relative humidity
73%
Average peak wind
17.2km/h
Seasonal range
9.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
18 d/yr
Rainy days (≥ 1 mm)
83 d/yr
Annual snowfall
0.0 cm
Average feels-like high
20.5 °C
Average feels-like low
10.1 °C
Average peak gust
41.8 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.66 · 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
39.4 °C
12 November 1972
Coldest day
-1.2 °C
5 August 1942
Wettest day
121 mm
11 April 2005
Windiest day
52.6 km/h
20 November 1943
Strongest gust
119.2 km/h
7 June 2017
Hottest feels-like
42.6 °C
30 December 2015
Coldest feels-like
-6.2 °C
5 August 1943
Snowiest day
0.1 cm
21 August 1954
Sunniest day
14.2 h
15 December 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 26.7 °C | +0.2 °C | 14 mm | -8 mm |
| Feb | 27.1 °C | +0.8 °C | 10 mm | -18 mm |
| Mar | 26.4 °C | +1.4 °C | 19 mm | -9 mm |
| Apr | 22.9 °C | +0.7 °C | 66 mm | +29 mm |
| May | 20.2 °C | +1.0 °C | 39 mm | -4 mm |
| Jun | 16.9 °C | +0.2 °C | 60 mm | +8 mm |
| Jul | 15.7 °C | -0.2 °C | 56 mm | +6 mm |
| Aug | 17.1 °C | +0.7 °C | 22 mm | -28 mm |
| Sep | 20.0 °C | +1.9 °C | 18 mm | -17 mm |
| Oct | 22.3 °C | +1.7 °C | 14 mm | -24 mm |
| Nov | 26.2 °C | +3.2 °C | 9 mm | -20 mm |
| Dec | 27.1 °C | +2.0 °C | 16 mm | -6 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 Caledon?
Caledon has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 15.7 °C and it receives 433 mm of precipitation per year.
What is the hottest day ever recorded in Caledon?
The hottest day measured in Caledon between 1940 and 2025 was 12 November 1972, reaching 39.4 °C.
What is the coldest day in Caledon?
The coldest day measured in Caledon between 1940 and 2025 was 5 August 1942, at -1.2 °C.
Does it snow in Caledon?
Almost never: Caledon sees virtually no snow, with about 0 frost days per year.
Has the climate of Caledon warmed?
Yes: Caledon warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Caledon?
The wettest day measured in Caledon between 1940 and 2025 was 11 April 2005, with 121 mm of rain in 24 hours.
What was the windiest day in Caledon?
The windiest day measured in Caledon between 1940 and 2025 was 20 November 1943, with winds reaching 52.6 km/h.
What is the warmest month in Caledon?
The warmest month in Caledon is January (20.5 °C on average); the coldest is July (10.7 °C).
How much does it rain in Caledon?
Caledon receives on average 433 mm of precipitation per year, spread over about 83 rainy days.
Is it sunny in Caledon?
Caledon gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
What is the biggest single-day snowfall in Caledon?
The heaviest 24-hour snowfall measured in Caledon between 1940 and 2025 was 21 August 1954, with 0.1 cm.
Are there tropical nights in Caledon?
Yes: Caledon has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Caledon?
In Caledon, between 1940 and 2025, the highest apparent temperature reached 42.6 °C on 30 December 2015, and the lowest was -6.2 °C on 5 August 1943.
Compare Caledon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Caledon