Climate Overview
The climate in Riverton is temperate. The average annual temperature is 11°C and approximately 1508mm of precipitation falls per year. Riverton receives a notable amount of rainfall throughout the year, including during its driest month. Riverton 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: February, January, December. The coldest months are July, August, June, when temperatures can drop to 6°C.
Temperature
Riverton sees moderate temperature variation throughout the year, ranging from 6°C to 17°C. February is the warmest month, though highs remain moderate at 17°C with a mean of 15°C. July is the coolest month, with minimum temperatures around 6°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.
Precipitation
Riverton is a fairly wet location, receiving approximately 1508mm of precipitation annually, which averages out to around 126mm per month. The wettest month is October, averaging 156mm of rainfall. January and July also tend to see above-average precipitation. The driest month is June, with just 86mm. That's 70mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Riverton is relatively calm, with an average annual wind speed of 5km/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 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
89 days until Spring
It is currently winter in Riverton, which began on June 21, 2026. Riverton 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 February at around 17°C, while the coldest stretch bottoms out in July near 6°C. Spring is next, beginning on September 23, 2026 — 89 days from now.
Spring
Temperatures range from 7 to 15°C. Rainfall is heavy, totalling around 402mm across the season with a monthly average of 134mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 11 to 17°C. Rainfall is heavy, totalling around 421mm across the season with a monthly average of 140mm. Winds are generally light, averaging 5km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 8 to 16°C. Rainfall is heavy, totalling around 370mm across the season with a monthly average of 123mm. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 6 to 11°C. Rainfall is heavy, totalling around 315mm across the season with a monthly average of 105mm. Winds are generally light, averaging 5km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Riverton 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.
