Westonaria, Gauteng Weather by Month and Climate Averages

How much rain does Westonaria get?

Westonaria 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.

Westonaria weather by month

Westonaria weather in January

In January, Westonaria 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 46% of daylight hours. The January record high is 39°C (2016) and the record low is 8°C (2001).

Westonaria weather in February

In February, Westonaria 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 48% of daylight hours. The February record high is 35°C (2016) and the record low is 11°C (2002).

Westonaria weather in March

In March, Westonaria 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 60% of daylight hours. The March record high is 35°C (2024) and the record low is 6°C (2025).

Westonaria weather in April

In April, Westonaria 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.

Westonaria weather in May

In May, Westonaria 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.

Westonaria weather in June

In June, Westonaria 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.

Westonaria weather in July

In July, Westonaria 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.

Westonaria weather in August

In August, Westonaria 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.

Westonaria weather in September

In September, Westonaria 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).

Westonaria weather in October

In October, Westonaria 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 65% of daylight hours. The October record high is 36°C (2024) and the record low is 0°C (1994).

Westonaria weather in November

In November, Westonaria 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 52% of daylight hours. The November record high is 37°C (2015) and the record low is 4°C (2002).

Westonaria weather in December

In December, Westonaria 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 44% of daylight hours. The December record high is 37°C (2015) and the record low is 6°C (1994).

Sunshine, humidity and wind in Westonaria

July is the sunniest month in Westonaria, with sunshine about 91% of daylight hours. December is the cloudiest, at 44%. Over the year the sun shines about 68% of daylight hours. Westonaria is sunnier than 55% of South Africa.

Humidity peaks in January at 68% and is lowest in August at 36%.

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

First and last freeze in Westonaria

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

Westonaria weather records

The hottest temperature on record at the Westonaria 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 Westonaria

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.

Westonaria climate questions

How much rain does Westonaria get?

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

What is the wettest month in Westonaria?

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

How many rainy days does Westonaria have a year?

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

What is the hottest month in Westonaria?

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

What is the coldest month in Westonaria?

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

What is the record high temperature in Westonaria?

The record high at the Westonaria 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 Westonaria?

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

When is the first frost in Westonaria?

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

What is the best time to visit Westonaria?

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