Climate averages 1991–2020
Tarija weather
in September.
A warm, fairly dry month: the joint 5th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Tarija: daytime highs average 22.0°C and nights cool to about 8.5°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 34 mm of rain on roughly 8 days, which makes September a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average September day.
The nearest other city in this atlas is Yacuiba (121 km away). In September its highs average 27.8°C, 5.8°C warmer than Tarija, with 24 mm of rain.
Among the 14 cities listed in Bolivia, Tarija ranks 7th of 14 for the warmest September highs and 7th of 14 for the driest September (rainfall, lowest first). The mean September high of those 14 cities is 22.6°C; Tarija is 0.6°C cooler than that mean.
From September to October, average highs rise by 0.9°C to 22.9°C, and monthly rainfall rises from 34 mm to 86 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tarija climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 22.8°C14.6°C | 14.6°C | 220 | 24.8 | 13.313 h |
| February | 22.0°C14.1°C | 14.1°C | 191 | 22.0 | 12.813 h |
| March | 21.7°C13.6°C | 13.6°C | 163 | 21.8 | 12.212 h |
| April | 20.7°C11.4°C | 11.4°C | 72 | 13.8 | 11.612 h |
| May | 19.2°C7.6°C | 7.6°C | 24 | 6.9 | 11.111 h |
| June | 19.5°C5.2°C | 5.2°C | 9.2 | 3.2 | 10.811 h |
| July | 19.1°C4.2°C | 4.2°C | 8.5 | 2.7 | 11.011 h |
| August | 20.8°C5.9°C | 5.9°C | 15 | 4.5 | 11.411 h |
| September, selected | 22.0°C8.5°C | 8.5°C | 34 | 8.4 | 12.012 h |
| October | 22.9°C11.7°C | 11.7°C | 86 | 17.3 | 12.613 h |
| November | 22.5°C12.8°C | 12.8°C | 130 | 20.5 | 13.113 h |
| December | 22.9°C14.2°C | 14.2°C | 194 | 24.5 | 13.413 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Yacuiba in SeptemberBolivia · 121 kmHigh 27.8°C · Low 15.7°C · 24 mm rain
- San Ramón de la Nueva Orán in SeptemberArgentina · 183 kmHigh 28.0°C · Low 15.2°C · 16 mm rain
- Potosí in SeptemberBolivia · 242 kmHigh 15.7°C · Low 0.1°C · 26 mm rain
- Sucre in SeptemberBolivia · 284 kmHigh 20.1°C · Low 7.6°C · 43 mm rain
- Calama in SeptemberChile · 444 kmHigh 23.3°C · Low 3.3°C · 0.6 mm rain
- Santa Cruz de la Sierra in SeptemberBolivia · 447 kmHigh 28.9°C · Low 19.6°C · 65 mm rain
- Oruro in SeptemberBolivia · 467 kmHigh 15.6°C · Low -0.1°C · 21 mm rain
- Sacaba in SeptemberBolivia · 480 kmHigh 20.0°C · Low 9.1°C · 59 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tarija) is explained once on the Tarija year overview and on the Sources, method and limits page.