Gansbaai climate — normals and trends
Gansbaai (South Africa) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 16.4 °C and it receives 524 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 February (19.8 °C on average) and the coldest is July (13.2 °C). Rainfall peaks in June.
Gansbaai averages 0 frost days, 0 hot days (≥ 30 °C) and 92 rainy days per year.
Gansbaai has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 31.4 °C (on 19 January 2000) and the coldest 5.4 °C (on 19 August 2003).
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
GansbaaiWestern Cape
- coords
- -34.58°, 19.35°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.4°C
Average daily high
18.5°C
Average daily low
14.6°C
Annual rainfall
524mm
Sunshine / day
10.7h
Mean relative humidity
78%
Average peak wind
25.5km/h
Seasonal range
6.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
92 d/yr
Annual snowfall
0.0 cm
Average feels-like high
17.7 °C
Average feels-like low
12.4 °C
Average peak gust
44.2 km/h
Tropical nights (≥ 20 °C)
4 d/yr
Solar radiation
18.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °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
31.4 °C
19 January 2000
Coldest day
5.4 °C
19 August 2003
Wettest day
123 mm
16 November 2013
Windiest day
77.1 km/h
30 June 1963
Strongest gust
130.0 km/h
30 July 1989
Hottest feels-like
34.0 °C
30 December 2015
Coldest feels-like
-1.6 °C
5 August 1943
Sunniest day
14.2 h
8 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 | 22.0 °C | +0.1 °C | 19 mm | -2 mm |
| Feb | 22.2 °C | +0.1 °C | 4 mm | -20 mm |
| Mar | 21.6 °C | +0.5 °C | 19 mm | -8 mm |
| Apr | 19.9 °C | +0.5 °C | 53 mm | +12 mm |
| May | 17.8 °C | +0.2 °C | 56 mm | -3 mm |
| Jun | 16.3 °C | +0.2 °C | 102 mm | +26 mm |
| Jul | 15.4 °C | +0.1 °C | 88 mm | +15 mm |
| Aug | 15.4 °C | +0.1 °C | 53 mm | -15 mm |
| Sep | 17.3 °C | +1.2 °C | 26 mm | -18 mm |
| Oct | 18.3 °C | +0.7 °C | 19 mm | -21 mm |
| Nov | 21.1 °C | +2.0 °C | 6 mm | -23 mm |
| Dec | 21.5 °C | +0.8 °C | 14 mm | -10 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 Gansbaai?
Gansbaai has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 16.4 °C and it receives 524 mm of precipitation per year.
What is the hottest day ever recorded in Gansbaai?
The hottest day measured in Gansbaai between 1940 and 2025 was 19 January 2000, reaching 31.4 °C.
What is the coldest day in Gansbaai?
The coldest day measured in Gansbaai between 1940 and 2025 was 19 August 2003, at 5.4 °C.
Does it snow in Gansbaai?
Almost never: Gansbaai sees virtually no snow, with about 0 frost days per year.
Has the climate of Gansbaai warmed?
Yes: Gansbaai warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gansbaai?
The wettest day measured in Gansbaai between 1940 and 2025 was 16 November 2013, with 123 mm of rain in 24 hours.
What was the windiest day in Gansbaai?
The windiest day measured in Gansbaai between 1940 and 2025 was 30 June 1963, with winds reaching 77.1 km/h.
What is the warmest month in Gansbaai?
The warmest month in Gansbaai is February (19.8 °C on average); the coldest is July (13.2 °C).
How much does it rain in Gansbaai?
Gansbaai receives on average 524 mm of precipitation per year, spread over about 92 rainy days.
Is it sunny in Gansbaai?
Gansbaai gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Gansbaai?
Yes: Gansbaai has on average 4 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gansbaai?
In Gansbaai, between 1940 and 2025, the highest apparent temperature reached 34.0 °C on 30 December 2015, and the lowest was -1.6 °C on 5 August 1943.
Compare Gansbaai with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gansbaai