Leslie climate — normals and trends
Leslie (South Africa) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 15.6 °C and it receives 794 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 (19.4 °C on average) and the coldest is June (9.2 °C). Rainfall peaks in December.
Leslie averages 6 frost days, 11 hot days (≥ 30 °C) and 110 rainy days per year.
Leslie has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 8 to 4 per year over the period.
The hottest day of the period reached 35.8 °C (on 7 January 2016) and the coldest -4.8 °C (on 28 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
LeslieMpumalanga
- coords
- -26.37°, 28.92°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.6°C
Average daily high
22.5°C
Average daily low
10.2°C
Annual rainfall
794mm
Sunshine / day
10.5h
Mean relative humidity
64%
Average peak wind
17.2km/h
Seasonal range
10.2°C
Frost days (< 0 °C)
6 d/yr
Hot days (≥ 30 °C)
11 d/yr
Rainy days (≥ 1 mm)
110 d/yr
Annual snowfall
0.4 cm
Average feels-like high
21.5 °C
Average feels-like low
8.2 °C
Average peak gust
35.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
19.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.42 · 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
35.8 °C
7 January 2016
Coldest day
-4.8 °C
28 June 1964
Wettest day
83 mm
23 January 1980
Windiest day
46.9 km/h
23 September 1941
Strongest gust
87.1 km/h
28 September 2012
Hottest feels-like
36.5 °C
6 January 2016
Coldest feels-like
-9.3 °C
28 June 1964
Snowiest day
10.7 cm
10 September 1981
Sunniest day
13.7 h
17 December 1941
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 | 26.1 °C | +1.0 °C | 216 mm | +82 mm |
| Feb | 25.4 °C | +0.5 °C | 242 mm | +132 mm |
| Mar | 24.1 °C | 0.0 °C | 134 mm | +48 mm |
| Apr | 20.8 °C | -1.2 °C | 87 mm | +36 mm |
| May | 20.4 °C | +0.4 °C | 7 mm | -9 mm |
| Jun | 18.3 °C | +0.9 °C | 2 mm | -6 mm |
| Jul | 18.4 °C | +0.7 °C | 4 mm | -0 mm |
| Aug | 22.6 °C | +2.0 °C | 30 mm | +20 mm |
| Sep | 25.2 °C | +1.1 °C | 55 mm | +28 mm |
| Oct | 24.8 °C | -0.2 °C | 74 mm | -11 mm |
| Nov | 22.3 °C | -2.3 °C | 211 mm | +88 mm |
| Dec | 24.1 °C | -0.8 °C | 130 mm | -11 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 Leslie?
Leslie has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 15.6 °C and it receives 794 mm of precipitation per year.
What is the hottest day ever recorded in Leslie?
The hottest day measured in Leslie between 1940 and 2025 was 7 January 2016, reaching 35.8 °C.
What is the coldest day in Leslie?
The coldest day measured in Leslie between 1940 and 2025 was 28 June 1964, at -4.8 °C.
Does it snow in Leslie?
Almost never: Leslie sees virtually no snow, with about 6 frost days per year.
Has the climate of Leslie warmed?
Yes: Leslie warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Leslie?
The wettest day measured in Leslie between 1940 and 2025 was 23 January 1980, with 83 mm of rain in 24 hours.
What was the windiest day in Leslie?
The windiest day measured in Leslie between 1940 and 2025 was 23 September 1941, with winds reaching 46.9 km/h.
What is the warmest month in Leslie?
The warmest month in Leslie is January (19.4 °C on average); the coldest is June (9.2 °C).
How much does it rain in Leslie?
Leslie receives on average 794 mm of precipitation per year, spread over about 110 rainy days.
Is it sunny in Leslie?
Leslie gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
What is the biggest single-day snowfall in Leslie?
The heaviest 24-hour snowfall measured in Leslie between 1940 and 2025 was 10 September 1981, with 10.7 cm.
Are there tropical nights in Leslie?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Leslie.
What was the most extreme apparent temperature in Leslie?
In Leslie, between 1940 and 2025, the highest apparent temperature reached 36.5 °C on 6 January 2016, and the lowest was -9.3 °C on 28 June 1964.
Compare Leslie with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Leslie