Cullinan climate — normals and trends
Cullinan (South Africa) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 17.1 °C and it receives 746 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 (21.2 °C on average) and the coldest is June (10.7 °C). Rainfall peaks in December.
Cullinan averages 1 frost days, 27 hot days (≥ 30 °C) and 101 rainy days per year.
Cullinan has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.5 °C (on 6 January 2016) and the coldest -2.6 °C (on 27 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
CullinanGauteng
- coords
- -25.67°, 28.52°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.1°C
Average daily high
23.8°C
Average daily low
11.8°C
Annual rainfall
746mm
Sunshine / day
10.6h
Mean relative humidity
61%
Average peak wind
16.7km/h
Seasonal range
10.5°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
27 d/yr
Rainy days (≥ 1 mm)
101 d/yr
Annual snowfall
0.1 cm
Average feels-like high
23.1 °C
Average feels-like low
10.0 °C
Average peak gust
33.9 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
20.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.37 · 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
36.5 °C
6 January 2016
Coldest day
-2.6 °C
27 June 1964
Wettest day
117 mm
19 February 2025
Windiest day
44.5 km/h
19 October 1945
Strongest gust
82.1 km/h
27 October 2024
Hottest feels-like
37.5 °C
21 January 1973
Coldest feels-like
-7.3 °C
27 June 1964
Snowiest day
4.0 cm
10 September 1981
Sunniest day
13.6 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 | 27.0 °C | +0.3 °C | 282 mm | +159 mm |
| Feb | 26.3 °C | -0.1 °C | 310 mm | +201 mm |
| Mar | 25.1 °C | -0.3 °C | 118 mm | +33 mm |
| Apr | 21.7 °C | -1.5 °C | 107 mm | +54 mm |
| May | 21.3 °C | +0.1 °C | 6 mm | -12 mm |
| Jun | 19.4 °C | +0.8 °C | 1 mm | -6 mm |
| Jul | 19.3 °C | +0.5 °C | 3 mm | -0 mm |
| Aug | 23.2 °C | +1.5 °C | 25 mm | +17 mm |
| Sep | 26.4 °C | +1.2 °C | 47 mm | +23 mm |
| Oct | 26.2 °C | -0.2 °C | 68 mm | -2 mm |
| Nov | 23.5 °C | -2.5 °C | 214 mm | +102 mm |
| Dec | 25.1 °C | -1.2 °C | 150 mm | +17 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 Cullinan?
Cullinan has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 17.1 °C and it receives 746 mm of precipitation per year.
What is the hottest day ever recorded in Cullinan?
The hottest day measured in Cullinan between 1940 and 2025 was 6 January 2016, reaching 36.5 °C.
What is the coldest day in Cullinan?
The coldest day measured in Cullinan between 1940 and 2025 was 27 June 1964, at -2.6 °C.
Does it snow in Cullinan?
Almost never: Cullinan sees virtually no snow, with about 1 frost days per year.
Has the climate of Cullinan warmed?
Yes: Cullinan warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Cullinan?
The wettest day measured in Cullinan between 1940 and 2025 was 19 February 2025, with 117 mm of rain in 24 hours.
What was the windiest day in Cullinan?
The windiest day measured in Cullinan between 1940 and 2025 was 19 October 1945, with winds reaching 44.5 km/h.
What is the warmest month in Cullinan?
The warmest month in Cullinan is January (21.2 °C on average); the coldest is June (10.7 °C).
How much does it rain in Cullinan?
Cullinan receives on average 746 mm of precipitation per year, spread over about 101 rainy days.
Is it sunny in Cullinan?
Cullinan 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 Cullinan?
The heaviest 24-hour snowfall measured in Cullinan between 1940 and 2025 was 10 September 1981, with 4.0 cm.
Are there tropical nights in Cullinan?
Yes: Cullinan has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Cullinan?
In Cullinan, between 1940 and 2025, the highest apparent temperature reached 37.5 °C on 21 January 1973, and the lowest was -7.3 °C on 27 June 1964.
Compare Cullinan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Cullinan