Climate Insights for Stilfontein

The climate in Stilfontein is hot. The average annual temperature is 28°C and approximately 387mm of precipitation falls per year. December is the wettest month, receiving around 33mm of rainfall. Stilfontein is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: June, July, February. The coldest months are October, November, December, when temperatures can drop to 19°C.

Stilfontein sees moderate temperature variation throughout the year, ranging from 19°C to 30°C. The warmest month is June, when average highs reach 30°C and the mean temperature sits around 29°C. October is the coolest month, with minimum temperatures around 19°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between September and October, with a 6°C shift in average temperatures.

Stilfontein is a quite dry location, receiving approximately 387mm of precipitation annually, which averages out to around 32mm per month. The wettest month is January, averaging 33mm of rainfall. February and March also tend to see above-average precipitation. The driest month is July, with just 27mm. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

Stilfontein is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 5km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to pick up during the summer months. The seasonal averages are 2km/h in winter, 2km/h in spring, 5km/h in summer, 4km/h in autumn.

It is currently winter in Stilfontein, which began on June 21, 2026. Stilfontein is in the Southern Hemisphere, where the seasons are reversed: spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in June at around 30°C, while the coldest stretch bottoms out in October near 19°C. Spring is next, beginning on September 23, 2026 (16 days from now).

The best time to visit Stilfontein is during October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 33mm per month. By contrast, June can be uncomfortably hot with temperatures reaching 30°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Stilfontein based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.