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Germiston Weather by Month
Average temperatures, rainfall and humidity for Germiston, South Africa, month by month, built from OpenWeather’s historical records. Use it to see what a typical Germiston month looks like before you travel — then check the live Germiston forecast for the days ahead.
Warmest month
January
27°C average high
Coolest month
July
5°C average low
Wettest month
December
69 mm of rain
Driest month
June
7 mm of rain
Average temperature and rainfall in Germiston by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 27°C | 15°C | -6°C / 37°C | 56 mm | 66% | 10 km/h |
| February | 27°C | 15°C | -1°C / 39°C | 60 mm | 65% | 10 km/h |
| March | 26°C | 14°C | 7°C / 34°C | 50 mm | 63% | 10 km/h |
| April | 23°C | 11°C | 0°C / 30°C | 43 mm | 63% | 9 km/h |
| May | 22°C | 8°C | -2°C / 28°C | 10 mm | 56% | 8 km/h |
| June | 19°C | 5°C | -7°C / 27°C | 7 mm | 54% | 8 km/h |
| July | 19°C | 5°C | -9°C / 27°C | 7 mm | 52% | 8 km/h |
| August | 22°C | 8°C | -5°C / 29°C | 8 mm | 50% | 9 km/h |
| September | 26°C | 11°C | -11°C / 35°C | 14 mm | 50% | 10 km/h |
| October | 26°C | 12°C | -2°C / 34°C | 31 mm | 55% | 11 km/h |
| November | 26°C | 14°C | 5°C / 36°C | 46 mm | 62% | 12 km/h |
| December | 26°C | 15°C | 4°C / 36°C | 69 mm | 69% | 11 km/h |
Best time to visit Germiston
The most comfortable time to visit Germiston is generally April and August to September, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around December, totalling about 402 mm a year.
Travellers who prefer heat should aim for January, when highs average 27°C. December is the month to avoid if rain would spoil your plans — it averages 69 mm, roughly 10× the rainfall of the driest month (June).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Germiston forecast for what is happening now.
Weather across South Africa right now
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