Climate Insights for Hermanus

The climate in Hermanus is temperate. The average annual temperature is 13°C and approximately 218mm of precipitation falls per year. October is the wettest month, receiving around 33mm of rainfall. Hermanus 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, August, July. The coldest months are July, August, June, when temperatures can drop to 3°C. Light snow can occur between May and May.

Hermanus sees moderate temperature variation throughout the year, ranging from 3°C to 23°C. June is the warmest month, though highs remain moderate at 23°C with a mean of 16°C. July is the coolest month, with minimum temperatures around 3°C and an average of 11°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between June and July, with a 5°C shift in average temperatures.

Hermanus is a quite dry location, receiving approximately 218mm of precipitation annually, which averages out to around 18mm per month. The wettest month is March, averaging 33mm of rainfall. April and May also tend to see above-average precipitation. The driest month is July, with just 0mm. That's 32mm less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between May and May, totalling around 15cm annually. May is the snowiest month with approximately 15cm.

Hermanus is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 10km/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 4km/h in winter, 4km/h in spring, 10km/h in summer, 9km/h in autumn.

It is currently winter in Hermanus, which began on June 21, 2026. Hermanus 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 23°C, while the coldest stretch bottoms out in July near 3°C. Spring is next, beginning on September 23, 2026 — 16 days from now.

The best time to visit Hermanus is during June, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 15mm per month. By contrast, July can be quite cold with temperatures dropping to 3°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Hermanus 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.