Climate averages 1991–2020
Oruro weather
in September.
A mild, fairly dry month: the 4th 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 Oruro: daytime highs average 15.6°C and nights cool to about -0.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 21 mm of rain on roughly 6 days, which makes September a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 59 min on an average September day.
The nearest other city in this atlas is Quillacollo (108 km away). In September its highs average 22.4°C, 6.8°C warmer than Oruro, with 23 mm of rain.
Among the 14 cities listed in Bolivia, Oruro ranks 12th of 14 for the warmest September highs and 1st of 14 for the driest September (rainfall, lowest first). The mean September high of those 14 cities is 22.6°C; Oruro is 7.0°C cooler than that mean.
From September to October, average highs rise by 1.3°C to 16.9°C, and monthly rainfall rises from 21 mm to 35 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
Oruro climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.0°C4.6°C | 4.6°C | 143 | 25.6 | 13.113 h |
| February | 13.9°C4.5°C | 4.5°C | 117 | 22.8 | 12.713 h |
| March | 14.1°C3.8°C | 3.8°C | 84 | 21.4 | 12.212 h |
| April | 14.9°C2.2°C | 2.2°C | 27 | 9.0 | 11.712 h |
| May | 14.4°C-0.4°C | -0.4°C | 7.3 | 2.3 | 11.311 h |
| June | 13.0°C-1.7°C | -1.7°C | 4.9 | 1.3 | 11.111 h |
| July | 12.8°C-2.4°C | -2.4°C | 8.1 | 2.0 | 11.211 h |
| August | 14.2°C-1.7°C | -1.7°C | 12 | 3.1 | 11.512 h |
| September, selected | 15.6°C-0.1°C | -0.1°C | 21 | 5.9 | 12.012 h |
| October | 16.9°C2.2°C | 2.2°C | 35 | 10.1 | 12.512 h |
| November | 17.3°C3.6°C | 3.6°C | 49 | 13.1 | 12.913 h |
| December | 15.9°C4.6°C | 4.6°C | 105 | 20.8 | 13.213 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
- Quillacollo in SeptemberBolivia · 108 kmHigh 22.4°C · Low 9.7°C · 23 mm rain
- Cochabamba in SeptemberBolivia · 119 kmHigh 21.6°C · Low 9.7°C · 23 mm rain
- Sacaba in SeptemberBolivia · 129 kmHigh 20.0°C · Low 9.1°C · 59 mm rain
- Viacha in SeptemberBolivia · 195 kmHigh 15.2°C · Low 0.7°C · 32 mm rain
- La Paz in SeptemberBolivia · 198 kmHigh 14.3°C · Low 2.4°C · 36 mm rain
- Sucre in SeptemberBolivia · 226 kmHigh 20.1°C · Low 7.6°C · 43 mm rain
- Potosí in SeptemberBolivia · 228 kmHigh 15.7°C · Low 0.1°C · 26 mm rain
- Tacna in SeptemberPeru · 334 kmHigh 20.5°C · Low 13.1°C · 2.4 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 Oruro) is explained once on the Oruro year overview and on the Sources, method and limits page.