Greytown climate — normals and trends
Greytown (South Africa) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 16.7 °C and it receives 749 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 (20.7 °C on average) and the coldest is June (11.3 °C). Rainfall peaks in December.
Greytown averages 1 frost days, 51 hot days (≥ 30 °C) and 126 rainy days per year.
Greytown has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.4 °C (on 24 December 2015) and the coldest -3.0 °C (on 26 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
GreytownKwaZulu-Natal
- coords
- -29.06°, 30.59°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.7°C
Average daily high
23.8°C
Average daily low
11.5°C
Annual rainfall
749mm
Sunshine / day
9.2h
Mean relative humidity
70%
Average peak wind
13.6km/h
Seasonal range
9.4°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
51 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
0.4 cm
Average feels-like high
23.4 °C
Average feels-like low
10.7 °C
Average peak gust
35.2 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
17.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.58 · 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
40.4 °C
24 December 2015
Coldest day
-3.0 °C
26 June 1964
Wettest day
101 mm
11 April 2022
Windiest day
39.1 km/h
9 September 1951
Strongest gust
93.2 km/h
3 October 2002
Hottest feels-like
42.0 °C
24 December 2015
Coldest feels-like
-6.7 °C
26 June 1964
Snowiest day
7.9 cm
10 June 1956
Sunniest day
13.9 h
25 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 | 28.4 °C | +1.5 °C | 163 mm | +52 mm |
| Feb | 26.3 °C | -0.3 °C | 97 mm | -8 mm |
| Mar | 26.5 °C | +0.6 °C | 110 mm | +26 mm |
| Apr | 22.4 °C | -1.3 °C | 118 mm | +68 mm |
| May | 23.1 °C | +1.3 °C | 8 mm | -13 mm |
| Jun | 20.9 °C | +1.4 °C | 17 mm | +4 mm |
| Jul | 20.7 °C | +1.0 °C | 13 mm | -0 mm |
| Aug | 24.9 °C | +3.1 °C | 5 mm | -17 mm |
| Sep | 24.3 °C | +0.2 °C | 72 mm | +32 mm |
| Oct | 24.9 °C | +0.3 °C | 65 mm | -8 mm |
| Nov | 25.4 °C | +0.2 °C | 102 mm | +1 mm |
| Dec | 26.5 °C | +0.1 °C | 170 mm | +54 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 Greytown?
Greytown has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 16.7 °C and it receives 749 mm of precipitation per year.
What is the hottest day ever recorded in Greytown?
The hottest day measured in Greytown between 1940 and 2025 was 24 December 2015, reaching 40.4 °C.
What is the coldest day in Greytown?
The coldest day measured in Greytown between 1940 and 2025 was 26 June 1964, at -3.0 °C.
Does it snow in Greytown?
Almost never: Greytown sees virtually no snow, with about 1 frost days per year.
Has the climate of Greytown warmed?
Yes: Greytown warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Greytown?
The wettest day measured in Greytown between 1940 and 2025 was 11 April 2022, with 101 mm of rain in 24 hours.
What was the windiest day in Greytown?
The windiest day measured in Greytown between 1940 and 2025 was 9 September 1951, with winds reaching 39.1 km/h.
What is the warmest month in Greytown?
The warmest month in Greytown is January (20.7 °C on average); the coldest is June (11.3 °C).
How much does it rain in Greytown?
Greytown receives on average 749 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Greytown?
Greytown gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Greytown?
The heaviest 24-hour snowfall measured in Greytown between 1940 and 2025 was 10 June 1956, with 7.9 cm.
Are there tropical nights in Greytown?
Yes: Greytown has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Greytown?
In Greytown, between 1940 and 2025, the highest apparent temperature reached 42.0 °C on 24 December 2015, and the lowest was -6.7 °C on 26 June 1964.
Compare Greytown with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Greytown