Climate Overview
The climate in Groot-Marico is warm and mild. The average annual temperature is 19°C and approximately 566mm of precipitation falls per year. December is the wettest month, receiving around 119mm of rainfall. Groot-Marico 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: November, January, October. The coldest months are July, June, August, when temperatures can drop to 5°C.
Temperature
Temperatures in Groot-Marico vary considerably across the year, with a 24°C difference between the coldest and warmest months. The warmest month is November, when average highs reach 29°C and the mean temperature sits around 22°C. July is the coolest month, with minimum temperatures around 5°C and an average of 12°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between August and September, with a 4°C shift in average temperatures.
Precipitation
Groot-Marico is a relatively dry area, receiving approximately 566mm of precipitation annually, which averages out to around 47mm per month. The wettest month is December, averaging 119mm of rainfall. January and February also tend to see above-average precipitation. The driest month is August, with just 0mm. That's 119mm less than December, 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.
Wind
Groot-Marico 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 November, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
3 days until Winter
It is currently autumn in Groot-Marico, which began on March 20, 2026. Groot-Marico 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 November at around 29°C, while the coldest stretch bottoms out in July near 5°C. Winter is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from 12 to 29°C. Rainfall is relatively light, with around 112mm over the season and a monthly average of 37mm. Winds are generally light, averaging 4km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 17 to 29°C. Rainfall is heavy, totalling around 324mm across the season with a monthly average of 108mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 8 to 27°C. Rainfall is relatively light, with around 120mm over the season and a monthly average of 40mm. Winds are generally light, averaging 2km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 5 to 23°C. Precipitation is minimal, with only around 11mm for the entire season. Winds are generally light, averaging 3km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Groot-Marico is during March, April, August, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 36mm per month. By contrast, July can be quite cold with temperatures dropping to 5°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Groot-Marico 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.
