Climate Overview
The climate in Tarija is temperate. The average annual temperature is 13°C and approximately 1092mm of precipitation falls per year. January is the wettest month, receiving around 219mm of rainfall. Tarija 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: October, September, November. The coldest months are July, June, August, when temperatures can drop to 3°C.
Temperature
Tarija sees moderate temperature variation throughout the year, ranging from 3°C to 22°C. October is the warmest month, though highs remain moderate at 22°C with a mean of 15°C. July is the coolest month, with minimum temperatures around 3°C and an average of 10°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 2°C shift in average temperatures.
Precipitation
Tarija is a moderately rainy area, receiving approximately 1092mm of precipitation annually, which averages out to around 91mm per month. The wettest month is January, averaging 219mm of rainfall. February and December also tend to see above-average precipitation. The driest month is June, with just 6mm. That's 213mm less than January, 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
Tarija is relatively calm, with an average annual wind speed of 12km/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 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months.
Seasons
89 days until Winter
It is currently autumn in Tarija, which began on March 20, 2026. Tarija 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 October at around 22°C, while the coldest stretch bottoms out in July near 3°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 7 to 22°C. Precipitation is moderate at around 212mm for the season, averaging 71mm per month. Winds are generally light, averaging 14km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 11 to 21°C. Rainfall is heavy, totalling around 615mm across the season with a monthly average of 205mm. Winds are generally light, averaging 11km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 6 to 20°C. Precipitation is moderate at around 240mm for the season, averaging 80mm per month. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 3 to 20°C. Precipitation is minimal, with only around 25mm for the entire season. Winds are generally light, averaging 12km/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 Tarija 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.
