Climate Overview
The climate in Río Grande is cool. The average annual temperature is 7°C and approximately 452mm of precipitation falls per year. March is the wettest month, receiving around 51mm of rainfall. Río Grande 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 1°C. Light snow can occur between June and September.
Temperature
Río Grande sees moderate temperature variation throughout the year, ranging from 1°C to 14°C. February is the warmest month, though highs remain moderate at 14°C with a mean of 11°C. July is the coolest month, with minimum temperatures around 1°C and an average of 3°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between March and April, with a 3°C shift in average temperatures.
Precipitation
Río Grande is a relatively dry area, receiving approximately 452mm of precipitation annually, which averages out to around 38mm per month. The wettest month is March, averaging 51mm of rainfall. January and February also tend to see above-average precipitation. The driest month is September, with just 21mm. That's 30mm less than March, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Light snowfall can occur between June and September, totalling around 17cm annually. June is the snowiest month with approximately 6cm.
Wind
Río Grande is relatively calm, with an average annual wind speed of 8km/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 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.
Seasons
84 days until Spring
It is currently winter in Río Grande, which began on June 21, 2026. Río Grande 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 14°C, while the coldest stretch bottoms out in July near 1°C. Spring is next, beginning on September 23, 2026 — 84 days from now.
Spring
Temperatures range from 3 to 11°C. Rainfall is relatively light, with around 84mm over the season and a monthly average of 28mm. Winds are generally light, averaging 8km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 8 to 14°C. Rainfall is relatively light, with around 141mm over the season and a monthly average of 47mm. Winds are generally light, averaging 8km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 4 to 12°C. Rainfall is relatively light, with around 133mm over the season and a monthly average of 44mm. Winds are generally light, averaging 7km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 1 to 5°C. Rainfall is relatively light, with around 94mm over the season and a monthly average of 31mm. Expect around 13cm of snow accumulation during this period. Winds are generally light, averaging 7km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Río Grande 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.
