Thembisa, Gauteng Weather by Month and Climate Averages

Thembisa, Gauteng gets 648 mm of precipitation a year over about 94 rainy days. January is the warmest month (average high 28°C) and July the coldest (average low 5°C).

Thembisa climate at a glance

Semi-arid climate

Thembisa, Gauteng has hot summers and warm winters. Daytime highs range from about 20°C in July to 28°C in January. December is usually the wettest month. The most comfortable time to visit is typically April to August, when daytime highs sit near 22°C.

How much rain does Thembisa get?

Thembisa gets 648 mm of precipitation in an average year, spread over about 94 days with measurable rain. That is more rainy days than 78% of South Africa.

December is the wettest month, with 118 mm. July is the driest, with 3 mm. December has the most rainy days, about 15.

Thembisa weather by month

Thembisa weather in January

In January, Thembisa averages a high of 28°C and a low of 16°C. It gets 113 mm of precipitation over about 15 rainy days. The sun is out about 44% of daylight hours. The January record high is 39°C (2016) and the record low is 8°C (2001).

Thembisa weather in February

In February, Thembisa averages a high of 28°C and a low of 16°C. It gets 91 mm of precipitation over about 11 rainy days. The sun is out about 47% of daylight hours. The February record high is 35°C (2016) and the record low is 11°C (2002).

Thembisa weather in March

In March, Thembisa averages a high of 27°C and a low of 14°C. It gets 85 mm of precipitation over about 11 rainy days. The sun is out about 59% of daylight hours. The March record high is 35°C (2024) and the record low is 6°C (2025).

Thembisa weather in April

In April, Thembisa averages a high of 25°C and a low of 12°C. It gets 35 mm of precipitation over about 7 rainy days. The sun is out about 68% of daylight hours. The April record high is 34°C (1995) and the record low is 0°C (2001). April is one of the most comfortable months to visit.

Thembisa weather in May

In May, Thembisa averages a high of 23°C and a low of 8°C. It gets 19 mm of precipitation over about 4 rainy days. The sun is out about 82% of daylight hours. The May record high is 30°C (2024) and the record low is -1°C (2007). May is one of the most comfortable months to visit.

Thembisa weather in June

In June, Thembisa averages a high of 21°C and a low of 6°C. It gets 9 mm of precipitation over about 2 rainy days. The sun is out about 90% of daylight hours. The June record high is 27°C (1998) and the record low is -2°C (2020). June is one of the most comfortable months to visit.

Thembisa weather in July

In July, Thembisa averages a high of 20°C and a low of 5°C. It gets 3 mm of precipitation over about 1 rainy days. The sun is out about 91% of daylight hours. The July record high is 27°C (2002) and the record low is -4°C (2000). July is one of the most comfortable months to visit.

Thembisa weather in August

In August, Thembisa averages a high of 23°C and a low of 7°C. It gets 8 mm of precipitation over about 2 rainy days. The sun is out about 86% of daylight hours. The August record high is 32°C (2020) and the record low is -5°C (2003). August is one of the most comfortable months to visit.

Thembisa weather in September

In September, Thembisa averages a high of 27°C and a low of 11°C. It gets 16 mm of precipitation over about 4 rainy days. The sun is out about 80% of daylight hours. The September record high is 34°C (2018) and the record low is 0°C (2015).

Thembisa weather in October

In October, Thembisa averages a high of 28°C and a low of 13°C. It gets 50 mm of precipitation over about 8 rainy days. The sun is out about 64% of daylight hours. The October record high is 36°C (2024) and the record low is 0°C (1994).

Thembisa weather in November

In November, Thembisa averages a high of 28°C and a low of 14°C. It gets 103 mm of precipitation over about 13 rainy days. The sun is out about 51% of daylight hours. The November record high is 37°C (2015) and the record low is 4°C (2002).

Thembisa weather in December

In December, Thembisa averages a high of 28°C and a low of 16°C. It gets 118 mm of precipitation over about 15 rainy days. The sun is out about 43% of daylight hours. The December record high is 37°C (2015) and the record low is 6°C (1994).

Sunshine, humidity and wind in Thembisa

July is the sunniest month in Thembisa, with sunshine about 91% of daylight hours. December is the cloudiest, at 43%. Over the year the sun shines about 67% of daylight hours. Thembisa is sunnier than 53% of South Africa.

Humidity peaks in February at 67% and is lowest in August at 36%.

Thembisa has about 16 days a year above 32°C. Thembisa is cooler than 60% of South Africa.

First and last freeze in Thembisa

The first fall freeze in Thembisa typically comes around July 7, and the last spring freeze around July 25. That leaves a frost-free growing season of about 347 days.

Thembisa weather records

The hottest temperature on record at the Thembisa station is 39°C, on January 7, 2016. The coldest is -5°C, on August 21, 2003.

The wettest day on record brought 181 mm of rain, on September 6, 2021.

34 all-time records have been set at the station since 1991.

The best time to visit Thembisa

The most comfortable time to visit is typically April to August, when daytime highs sit near 22°C.

Winter (June–August) is warm, with average highs around 21°C and lows near 6°C.

Spring (September–November) is warm, with average highs around 28°C and lows near 13°C.

Summer (December–February) is hot, with average highs around 28°C and lows near 16°C.

Autumn (March–May) is warm, with average highs around 25°C and lows near 11°C.

Monthly climate

MonthPrecipRain daysHumiditySunshineRecord highRecord low
January113 mm1566%44%39°
February91 mm1167%47%35°11°
March85 mm1162%59%35°
April35 mm760%68%34°
May19 mm452%82%30°-1°
June8.9 mm247%90%27°-2°
July2.8 mm138%91%27°-4°
August7.9 mm236%86%32°-5°
September16 mm436%80%34°
October50 mm844%64%36°
November103 mm1357%51%37°
December118 mm1564%43%37°

From ERA5 reanalysis. Sunshine is estimated from cloud cover.

Thembisa climate questions

How much rain does Thembisa get?

Thembisa gets 648 mm of precipitation in an average year, over about 94 rainy days.

What is the wettest month in Thembisa?

December is the wettest month in Thembisa, with 118 mm. July is the driest, with 3 mm.

How many rainy days does Thembisa have a year?

Thembisa has about 94 days with measurable rain in an average year. December has the most, about 15.

What is the hottest month in Thembisa?

January is the warmest month in Thembisa, with an average high of 28°C.

What is the coldest month in Thembisa?

July is the coldest month in Thembisa, with an average low of 5°C.

What is the record high temperature in Thembisa?

The record high at the Thembisa station is 39°C, set on January 7, 2016. The record low is -5°C, on August 21, 2003.

What is the sunniest month in Thembisa?

July is the sunniest month in Thembisa, with sunshine about 91% of daylight hours. December is the cloudiest.

When is the first frost in Thembisa?

The first fall freeze in Thembisa typically comes around July 7. The last spring freeze is around July 25.

What is the best time to visit Thembisa?

The most comfortable time to visit is typically April to August, when daytime highs sit near 22°C.

Source: NOAA GHCN-Daily station PRETORIA/IRENE (9 km away).

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Normals from NOAA GHCN-Daily station PRETORIA/IRENE.