Climate averages 1991–2020
Viacha weather
in December.
A cool, wet month: the 4th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Viacha: daytime highs average 14.8°C and nights cool to about 4.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 110 mm of rain on roughly 21 days, which makes December a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 06 min on an average December day.
The nearest other city in this atlas is La Paz (23 km away). In December its highs average 14.8°C, about as warm as Viacha, with 112 mm of rain.
Among the 14 cities listed in Bolivia, Viacha ranks joint 13th of 14 for the warmest December highs and 2nd of 14 for the driest December (rainfall, lowest first). The mean December high of those 14 cities is 22.5°C; Viacha is 7.7°C cooler than that mean.
From December to January, average highs fall by 1.1°C to 13.8°C, and monthly rainfall rises from 110 mm to 143 mm.
The annual picture
December 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
Viacha climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.8°C4.5°C | 4.5°C | 143 | 24.8 | 13.013 h |
| February | 13.8°C4.2°C | 4.2°C | 124 | 22.7 | 12.613 h |
| March | 13.7°C3.7°C | 3.7°C | 96 | 22.4 | 12.212 h |
| April | 13.8°C2.2°C | 2.2°C | 46 | 13.5 | 11.712 h |
| May | 14.1°C0.2°C | 0.2°C | 14 | 4.7 | 11.311 h |
| June | 13.7°C-1.2°C | -1.2°C | 8.2 | 2.5 | 11.211 h |
| July | 13.5°C-1.6°C | -1.6°C | 10 | 3.0 | 11.211 h |
| August | 14.5°C-0.7°C | -0.7°C | 16 | 4.5 | 11.612 h |
| September | 15.2°C0.7°C | 0.7°C | 32 | 9.6 | 12.012 h |
| October | 15.7°C2.4°C | 2.4°C | 53 | 13.2 | 12.512 h |
| November | 16.1°C3.4°C | 3.4°C | 58 | 13.9 | 12.913 h |
| December, selected | 14.8°C4.2°C | 4.2°C | 110 | 20.8 | 13.113 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
December in nearby cities
- La Paz in DecemberBolivia · 23 kmHigh 14.8°C · Low 5.7°C · 112 mm rain
- Oruro in DecemberBolivia · 195 kmHigh 15.9°C · Low 4.6°C · 105 mm rain
- Puno in DecemberPeru · 205 kmHigh 15.2°C · Low 5.8°C · 156 mm rain
- Quillacollo in DecemberBolivia · 230 kmHigh 22.1°C · Low 13.0°C · 132 mm rain
- Juliaca in DecemberPeru · 234 kmHigh 15.1°C · Low 4.8°C · 140 mm rain
- Cochabamba in DecemberBolivia · 242 kmHigh 21.8°C · Low 13.1°C · 132 mm rain
- Sacaba in DecemberBolivia · 254 kmHigh 20.6°C · Low 12.2°C · 173 mm rain
- Tacna in DecemberPeru · 257 kmHigh 25.3°C · Low 16.3°C · 5.6 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 Viacha) is explained once on the Viacha year overview and on the Sources, method and limits page.