Secunda climate — normals and trends
Secunda (South Africa) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 15.3 °C and it receives 835 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 (19.1 °C on average) and the coldest is June (8.9 °C). Rainfall peaks in December.
Secunda averages 8 frost days, 9 hot days (≥ 30 °C) and 112 rainy days per year.
Secunda has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 10 to 6 per year over the period.
The hottest day of the period reached 35.9 °C (on 7 January 2016) and the coldest -5.4 °C (on 8 July 1996).
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
SecundaMpumalanga
- coords
- -26.55°, 29.17°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.3°C
Average daily high
22.3°C
Average daily low
9.9°C
Annual rainfall
835mm
Sunshine / day
10.4h
Mean relative humidity
65%
Average peak wind
17.5km/h
Seasonal range
10.2°C
Frost days (< 0 °C)
8 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
112 d/yr
Annual snowfall
0.7 cm
Average feels-like high
21.2 °C
Average feels-like low
7.9 °C
Average peak gust
35.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
19.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.45 · 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
35.9 °C
7 January 2016
Coldest day
-5.4 °C
8 July 1996
Wettest day
95 mm
30 January 1984
Windiest day
48.9 km/h
23 September 1941
Strongest gust
90.7 km/h
27 October 2024
Hottest feels-like
36.2 °C
6 January 2016
Coldest feels-like
-9.7 °C
8 July 1996
Snowiest day
10.9 cm
10 September 1981
Sunniest day
13.7 h
27 December 1940
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 | 25.9 °C | +1.1 °C | 203 mm | +63 mm |
| Feb | 25.1 °C | +0.5 °C | 209 mm | +100 mm |
| Mar | 23.9 °C | 0.0 °C | 120 mm | +33 mm |
| Apr | 20.5 °C | -1.3 °C | 117 mm | +65 mm |
| May | 20.2 °C | +0.5 °C | 10 mm | -8 mm |
| Jun | 18.0 °C | +0.8 °C | 2 mm | -7 mm |
| Jul | 18.1 °C | +0.6 °C | 4 mm | -1 mm |
| Aug | 22.8 °C | +2.4 °C | 16 mm | +5 mm |
| Sep | 25.1 °C | +1.1 °C | 59 mm | +29 mm |
| Oct | 24.6 °C | -0.1 °C | 65 mm | -25 mm |
| Nov | 22.2 °C | -2.1 °C | 224 mm | +90 mm |
| Dec | 24.0 °C | -0.7 °C | 161 mm | +9 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 Secunda?
Secunda has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 15.3 °C and it receives 835 mm of precipitation per year.
What is the hottest day ever recorded in Secunda?
The hottest day measured in Secunda between 1940 and 2025 was 7 January 2016, reaching 35.9 °C.
What is the coldest day in Secunda?
The coldest day measured in Secunda between 1940 and 2025 was 8 July 1996, at -5.4 °C.
Does it snow in Secunda?
Almost never: Secunda sees virtually no snow, with about 8 frost days per year.
Has the climate of Secunda warmed?
Yes: Secunda warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Secunda?
The wettest day measured in Secunda between 1940 and 2025 was 30 January 1984, with 95 mm of rain in 24 hours.
What was the windiest day in Secunda?
The windiest day measured in Secunda between 1940 and 2025 was 23 September 1941, with winds reaching 48.9 km/h.
What is the warmest month in Secunda?
The warmest month in Secunda is January (19.1 °C on average); the coldest is June (8.9 °C).
How much does it rain in Secunda?
Secunda receives on average 835 mm of precipitation per year, spread over about 112 rainy days.
Is it sunny in Secunda?
Secunda gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.
What is the biggest single-day snowfall in Secunda?
The heaviest 24-hour snowfall measured in Secunda between 1940 and 2025 was 10 September 1981, with 10.9 cm.
Are there tropical nights in Secunda?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Secunda.
What was the most extreme apparent temperature in Secunda?
In Secunda, between 1940 and 2025, the highest apparent temperature reached 36.2 °C on 6 January 2016, and the lowest was -9.7 °C on 8 July 1996.
Compare Secunda with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Secunda