Northam climate — normals and trends
Northam (South Africa) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 20.0 °C and it receives 618 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 (24.5 °C on average) and the coldest is July (12.9 °C). Rainfall peaks in December.
Northam averages 0 frost days, 100 hot days (≥ 30 °C) and 84 rainy days per year.
Northam has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.0 °C (on 7 January 2016) and the coldest -1.0 °C (on 2 August 1972).
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
NorthamLimpopo
- coords
- -24.96°, 27.27°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
20.0°C
Average daily high
26.7°C
Average daily low
14.4°C
Annual rainfall
618mm
Sunshine / day
10.9h
Mean relative humidity
55%
Average peak wind
13.1km/h
Seasonal range
11.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
100 d/yr
Rainy days (≥ 1 mm)
84 d/yr
Annual snowfall
0.0 cm
Average feels-like high
26.8 °C
Average feels-like low
13.4 °C
Average peak gust
29.4 km/h
Tropical nights (≥ 20 °C)
53 d/yr
Solar radiation
20.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.17 · 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
42.0 °C
7 January 2016
Coldest day
-1.0 °C
2 August 1972
Wettest day
105 mm
4 February 1956
Windiest day
38.6 km/h
28 September 2012
Strongest gust
80.3 km/h
28 September 2012
Hottest feels-like
41.8 °C
7 January 2016
Coldest feels-like
-4.9 °C
2 August 1972
Sunniest day
13.6 h
19 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 | 28.9 °C | -1.1 °C | 249 mm | +142 mm |
| Feb | 28.4 °C | -0.9 °C | 268 mm | +169 mm |
| Mar | 27.6 °C | -0.6 °C | 45 mm | -33 mm |
| Apr | 24.5 °C | -1.4 °C | 118 mm | +70 mm |
| May | 23.0 °C | -0.6 °C | 12 mm | -4 mm |
| Jun | 21.3 °C | +0.5 °C | 0 mm | -6 mm |
| Jul | 21.5 °C | +0.5 °C | 1 mm | -2 mm |
| Aug | 26.3 °C | +2.1 °C | 0 mm | -4 mm |
| Sep | 29.9 °C | +1.7 °C | 16 mm | -0 mm |
| Oct | 29.8 °C | -0.2 °C | 28 mm | -20 mm |
| Nov | 26.7 °C | -3.1 °C | 120 mm | +36 mm |
| Dec | 28.2 °C | -1.5 °C | 130 mm | +19 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 Northam?
Northam has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 20.0 °C and it receives 618 mm of precipitation per year.
What is the hottest day ever recorded in Northam?
The hottest day measured in Northam between 1940 and 2025 was 7 January 2016, reaching 42.0 °C.
What is the coldest day in Northam?
The coldest day measured in Northam between 1940 and 2025 was 2 August 1972, at -1.0 °C.
Does it snow in Northam?
Almost never: Northam sees virtually no snow, with about 0 frost days per year.
Has the climate of Northam warmed?
Yes: Northam warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Northam?
The wettest day measured in Northam between 1940 and 2025 was 4 February 1956, with 105 mm of rain in 24 hours.
What was the windiest day in Northam?
The windiest day measured in Northam between 1940 and 2025 was 28 September 2012, with winds reaching 38.6 km/h.
What is the warmest month in Northam?
The warmest month in Northam is January (24.5 °C on average); the coldest is July (12.9 °C).
How much does it rain in Northam?
Northam receives on average 618 mm of precipitation per year, spread over about 84 rainy days.
Is it sunny in Northam?
Northam gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Northam?
Yes: Northam has on average 53 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Northam?
In Northam, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 7 January 2016, and the lowest was -4.9 °C on 2 August 1972.
Compare Northam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Northam