Boksburg, South Africa climate

Cwa Monsoon-influenced humid subtropical

Boksburg has a mildly seasonal warm-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is January with an average daily high near 28°C, while the coldest is July averaging around 5°C at night. Precipitation totals about 785 mm a year and is strongly seasonal — November alone averages 144 mm while June barely receives 3 mm.

☀️ Summers

Warm

Highs near 28°C in January.

About 16 days a year above 32 °C

❄️ Winters

Cool

Lows near 5°C in July.

About 2 freezing nights a year

🌧️ Rain

Moderate rainfall

About 785 mm of rain a year.

Wettest in November

⛅ Sky & trend

Fairly sunny

More sun than cloud through the year.

+0.9 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Boksburg climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	28	28	27	25	23	20	20	23	27	28	28	28
Avg temp (°C)	22	22	21	18	15	13	12	15	19	21	21	22
Avg low (°C)	16	16	15	12	8	5	5	7	11	13	15	16
Precipitation (mm)	134	125	104	47	7	3	4	3	15	77	144	122

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	28	28	27	25	23	20
Avg temp (°C)	22	22	21	18	15	13
Avg low (°C)	16	16	15	12	8	5
Precipitation (mm)	134	125	104	47	7	3

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	20	23	27	28	28	28
Avg temp (°C)	12	15	19	21	21	22
Avg low (°C)	5	7	11	13	15	16
Precipitation (mm)	4	3	15	77	144	122

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	14	10	10	7	3	1	0.8	1	3	8	13	15
Days with high ≥ 32°C (days)	2	2	0.8	0.1	—	—	—	—	0.9	4	3	3
Days with low ≤ 0°C (days)	—	—	—	0.0	0.1	0.5	0.9	0.4	0.1	0.1	—	—

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	14	10	10	7	3	1
Days with high ≥ 32°C (days)	2	2	0.8	0.1	—	—
Days with low ≤ 0°C (days)	—	—	—	0.0	0.1	0.5

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	0.8	1	3	8	13	15
Days with high ≥ 32°C (days)	—	—	0.9	4	3	3
Days with low ≤ 0°C (days)	0.9	0.4	0.1	0.1	—	—

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	61	57	50	40	25	20	18	21	29	47	58	65
Clear days (≤ 30% cloud)	6	6	10	13	20	22	24	23	19	11	6	4
Partly cloudy days (30–70%)	12	13	12	11	8	7	6	6	8	12	12	13
Cloudy days (≥ 70%)	13	10	9	6	2	2	1	2	3	9	12	15
Relative humidity (%)	65	64	64	61	54	54	50	44	40	49	57	63
Wind speed (mph)	4.6	4.4	4.2	4.3	4.5	5.0	5.2	6.1	6.6	6.5	6.0	5.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	61	57	50	40	25	20
Clear days (≤ 30% cloud)	6	6	10	13	20	22
Partly cloudy days (30–70%)	12	13	12	11	8	7
Cloudy days (≥ 70%)	13	10	9	6	2	2
Relative humidity (%)	65	64	64	61	54	54
Wind speed (mph)	4.6	4.4	4.2	4.3	4.5	5.0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	18	21	29	47	58	65
Clear days (≤ 30% cloud)	24	23	19	11	6	4
Partly cloudy days (30–70%)	6	6	8	12	12	13
Cloudy days (≥ 70%)	1	2	3	9	12	15
Relative humidity (%)	50	44	40	49	57	63
Wind speed (mph)	5.2	6.1	6.6	6.5	6.0	5.1

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 24 years of daily observations at Pretoria/irene, a weather station, about 33 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →