Malmesbury climate — normals and trends
Malmesbury (South Africa) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.0 °C and it receives 513 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 (22.9 °C on average) and the coldest is July (10.8 °C). Rainfall peaks in June.
Malmesbury averages 1 frost days, 65 hot days (≥ 30 °C) and 69 rainy days per year.
Malmesbury has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The number of frost days there went from about 2 to 0 per year over the period.
The hottest day of the period reached 41.7 °C (on 3 March 2015) and the coldest -3.5 °C (on 17 June 1988).
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
MalmesburyWestern Cape
- coords
- -33.46°, 18.73°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.0°C
Average daily high
23.7°C
Average daily low
11.5°C
Annual rainfall
513mm
Sunshine / day
11.0h
Mean relative humidity
69%
Average peak wind
17.6km/h
Seasonal range
12.1°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
65 d/yr
Rainy days (≥ 1 mm)
69 d/yr
Annual snowfall
0.0 cm
Average feels-like high
23.2 °C
Average feels-like low
10.1 °C
Average peak gust
36.2 km/h
Tropical nights (≥ 20 °C)
7 d/yr
Solar radiation
19.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.50 · 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
41.7 °C
3 March 2015
Coldest day
-3.5 °C
17 June 1988
Wettest day
57 mm
24 June 1991
Windiest day
64.2 km/h
2 December 1943
Strongest gust
119.9 km/h
16 May 1984
Hottest feels-like
43.9 °C
22 January 2022
Coldest feels-like
-7.5 °C
5 August 1943
Sunniest day
14.0 h
11 December 2023
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 | 29.3 °C | -0.7 °C | 5 mm | -9 mm |
| Feb | 30.8 °C | +0.6 °C | 0 mm | -13 mm |
| Mar | 29.1 °C | +0.6 °C | 15 mm | -2 mm |
| Apr | 26.6 °C | +1.7 °C | 36 mm | -1 mm |
| May | 22.2 °C | +1.4 °C | 58 mm | -9 mm |
| Jun | 17.9 °C | -0.1 °C | 98 mm | +3 mm |
| Jul | 16.9 °C | -0.1 °C | 104 mm | +24 mm |
| Aug | 17.6 °C | +0.1 °C | 69 mm | -6 mm |
| Sep | 21.6 °C | +2.0 °C | 18 mm | -28 mm |
| Oct | 24.4 °C | +1.4 °C | 14 mm | -17 mm |
| Nov | 30.4 °C | +4.4 °C | 5 mm | -16 mm |
| Dec | 30.8 °C | +2.5 °C | 9 mm | -8 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 Malmesbury?
Malmesbury has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.0 °C and it receives 513 mm of precipitation per year.
What is the hottest day ever recorded in Malmesbury?
The hottest day measured in Malmesbury between 1940 and 2025 was 3 March 2015, reaching 41.7 °C.
What is the coldest day in Malmesbury?
The coldest day measured in Malmesbury between 1940 and 2025 was 17 June 1988, at -3.5 °C.
Does it snow in Malmesbury?
Almost never: Malmesbury sees virtually no snow, with about 1 frost days per year.
Has the climate of Malmesbury warmed?
Yes: Malmesbury warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Malmesbury?
The wettest day measured in Malmesbury between 1940 and 2025 was 24 June 1991, with 57 mm of rain in 24 hours.
What was the windiest day in Malmesbury?
The windiest day measured in Malmesbury between 1940 and 2025 was 2 December 1943, with winds reaching 64.2 km/h.
What is the warmest month in Malmesbury?
The warmest month in Malmesbury is January (22.9 °C on average); the coldest is July (10.8 °C).
How much does it rain in Malmesbury?
Malmesbury receives on average 513 mm of precipitation per year, spread over about 69 rainy days.
Is it sunny in Malmesbury?
Malmesbury gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.
Are there tropical nights in Malmesbury?
Yes: Malmesbury has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Malmesbury?
In Malmesbury, between 1940 and 2025, the highest apparent temperature reached 43.9 °C on 22 January 2022, and the lowest was -7.5 °C on 5 August 1943.
Compare Malmesbury with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Malmesbury