Hermanus Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Hermanus, Western Cape, South Africa. This average is based on long-term data collected between 1990 and 2020. Let's now guide you through the details for a complete overview.

Generally, Hermanus has a moderate amount of precipitation, averaging 634 mm (25 in) of rainfall annually. However, it does experience a distinct dry season during certain months. Take a look at our detailed charts below to see the seasonal variation.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The seasons in Hermanus, bring significant changes in precipitation. The wettest month, June, receives moderate rainfall, with an average of 92 mm (3.6 in) of precipitation. This rainfall is distributed across 12 rainy days.

June, the wettest month, has a maximum daytime temperature of 18°C (64°F). During the driest month January you can expect a temperature of 24°C (75°F). For more detailed insights into the city's temperatures, visit our Hermanus Temperature page.

Hermanus's average annual precipitation is 634 mm (25 in). Let's compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm (50 in) of rainfall annually, with precipitation evenly distributed throughout the year.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.

Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Hermanus's weather, including sunshine hours, humidity levels, and temperature data, visit our Hermanus Climate page.