Climate Insights for Uyuni

The climate in Uyuni is cool. The average annual temperature is 9°C and approximately 461mm of precipitation falls per year. February is the wettest month, receiving around 134mm of rainfall. Uyuni 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: December, November, October. The coldest months are July, June, August, when temperatures can drop to -2°C. Light snow can occur between February and July.

Temperatures in Uyuni vary considerably across the year, with a 22°C difference between the coldest and warmest months. December is the warmest month, though highs remain moderate at 20°C with a mean of 13°C. The coldest month is July, when overnight lows fall to -2°C and the daily average is 4°C. On average, daily temperatures fluctuate by about 14°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 3°C shift in average temperatures.

Uyuni is a relatively dry area, receiving approximately 461mm of precipitation annually, which averages out to around 38mm per month. The wettest month is February, averaging 134mm of rainfall. January and December also tend to see above-average precipitation. The driest month is May, with just 1mm. That's 134mm less than February, 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. Light snowfall can occur between February and July, totalling around 9cm annually. July is the snowiest month with approximately 4cm.

Uyuni 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 September, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 3km/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.

It is currently winter in Uyuni, which began on June 21, 2026. Uyuni 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 December at around 20°C, while the coldest stretch bottoms out in July near -2°C. Spring is next, beginning on September 23, 2026 — 92 days from now.

The table below shows monthly climate averages for Uyuni 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.