Cullinan Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Cullinan, Gauteng, South Africa. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.
Generally, Cullinan has a moderate amount of precipitation, averaging 701 mm (28 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))
Cullinan can be quite wet during December, receiving approximately 122 mm (4.8 in) of precipitation over 13 rainy days.
In contrast July, experiences much drier conditions, with 4.2 mm (0.2 in) of rainfall, spread across a single rainy day.
December, the wettest month, has a maximum daytime temperature of 28°C (82°F). The city receives 276 hours of sunshine in this period. During the driest month July you can expect a temperature of 21°C (70°F). For more detailed insights into the city's temperatures, visit our Cullinan Temperature page.
Annual Rainfall in South Africa: City Comparison
The map below shows the annual precipitation across South Africa. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Cullinan vs World: Rainfall Compared
Cullinan's average annual precipitation is 701 mm (28 in). Let's compare this to some popular worldwide tourist destinations:
Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.
Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.
Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.
Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.
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.
Precipitation has a very strong role in determining the local climate and ecosystem:
- Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
- Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.
- "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
- The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
- The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters (103 feet) fell during the winter of 1972.
For more detailed information about Cullinan's weather, including sunshine hours, humidity levels, and temperature data, visit our Cullinan Climate page.
