Climate Insights for Gansbaai

The climate in Gansbaai is temperate. The average annual temperature is 17°C and approximately 491mm of precipitation falls per year. June is the wettest month, receiving around 79mm of rainfall. Gansbaai 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: January, February, December. The coldest months are July, August, June, when temperatures can drop to 9°C.

Gansbaai sees moderate temperature variation throughout the year, ranging from 9°C to 25°C. January is the warmest month, though highs remain moderate at 25°C with a mean of 21°C. July is the coolest month, with minimum temperatures around 9°C and an average of 13°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between September and October, with a 2°C shift in average temperatures.

Gansbaai is a relatively dry area, receiving approximately 491mm of precipitation annually, which averages out to around 41mm per month. The wettest month is June, averaging 79mm of rainfall. July and August also tend to see above-average precipitation. The driest month is February, with just 18mm. That's 61mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Gansbaai is moderately windy, with an average annual wind speed of 23km/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 25km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 20km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 22km/h in winter, 24km/h in spring, 25km/h in summer, 21km/h in autumn.

It is currently autumn in Gansbaai, which began on March 20, 2026. Gansbaai 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 January at around 25°C, while the coldest stretch bottoms out in July near 9°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Gansbaai is during January, February, March, April, May, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 29mm per month. By contrast, July can be quite cold with temperatures dropping to 9°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Gansbaai 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.