Climate averages 1991–2020
Potosí weather
in September.
A mild, fairly dry month: the 3rd warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Potosí: daytime highs average 15.7°C and nights cool to about 0.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 26 mm of rain on roughly 7 days, which makes September a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 58 min on an average September day.
The nearest other city in this atlas is Sucre (80 km away). In September its highs average 20.1°C, 4.4°C warmer than Potosí, with 43 mm of rain.
Among the 14 cities listed in Bolivia, Potosí ranks 11th of 14 for the warmest September highs and 5th of 14 for the driest September (rainfall, lowest first). The mean September high of those 14 cities is 22.6°C; Potosí is 6.8°C cooler than that mean.
From September to October, average highs rise by 0.7°C to 16.5°C, and monthly rainfall rises from 26 mm to 51 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
Potosí climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.3°C4.7°C | 4.7°C | 171 | 25.8 | 13.213 h |
| February | 13.3°C4.8°C | 4.8°C | 148 | 23.6 | 12.813 h |
| March | 13.3°C4.0°C | 4.0°C | 108 | 21.3 | 12.212 h |
| April | 14.1°C1.9°C | 1.9°C | 35 | 9.5 | 11.712 h |
| May | 14.3°C-1.5°C | -1.5°C | 6.2 | 1.8 | 11.211 h |
| June | 13.5°C-2.9°C | -2.9°C | 2.2 | 0.5 | 11.011 h |
| July | 13.3°C-3.2°C | -3.2°C | 4.0 | 1.0 | 11.111 h |
| August | 14.6°C-2.1°C | -2.1°C | 10 | 2.6 | 11.411 h |
| September, selected | 15.7°C0.1°C | 0.1°C | 26 | 6.5 | 12.012 h |
| October | 16.5°C2.4°C | 2.4°C | 51 | 11.7 | 12.513 h |
| November | 16.2°C3.9°C | 3.9°C | 77 | 15.6 | 13.013 h |
| December | 14.9°C4.8°C | 4.8°C | 133 | 22.5 | 13.313 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
- Sucre in SeptemberBolivia · 80 kmHigh 20.1°C · Low 7.6°C · 43 mm rain
- Oruro in SeptemberBolivia · 228 kmHigh 15.6°C · Low -0.1°C · 21 mm rain
- Tarija in SeptemberBolivia · 242 kmHigh 22.0°C · Low 8.5°C · 34 mm rain
- Sacaba in SeptemberBolivia · 245 kmHigh 20.0°C · Low 9.1°C · 59 mm rain
- Cochabamba in SeptemberBolivia · 249 kmHigh 21.6°C · Low 9.7°C · 23 mm rain
- Quillacollo in SeptemberBolivia · 250 kmHigh 22.4°C · Low 9.7°C · 23 mm rain
- Santa Cruz de la Sierra in SeptemberBolivia · 337 kmHigh 28.9°C · Low 19.6°C · 65 mm rain
- Yacuiba in SeptemberBolivia · 346 kmHigh 27.8°C · Low 15.7°C · 24 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 Potosí) is explained once on the Potosí year overview and on the Sources, method and limits page.