Climate averages 1991–2020
Viacha weather
in May.
A cool, very dry month: the 6th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a cool month in Viacha: daytime highs average 14.1°C and nights cool to about 0.2°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 14 mm of rain on roughly 5 days, which makes May a very dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 21 min on an average May day.
The nearest other city in this atlas is La Paz (23 km away). In May its highs average 14.1°C, about as warm as Viacha, with 16 mm of rain.
Among the 14 cities listed in Bolivia, Viacha ranks joint 13th of 14 for the warmest May highs and 5th of 14 for the driest May (rainfall, lowest first). The mean May high of those 14 cities is 20.3°C; Viacha is 6.2°C cooler than that mean.
From May to June, average highs fall by 0.4°C to 13.7°C, and monthly rainfall falls from 14 mm to 8.2 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- La Paz in MayBolivia · 23 kmHigh 14.1°C · Low 2.4°C · 16 mm rain
- Oruro in MayBolivia · 195 kmHigh 14.4°C · Low -0.4°C · 7.3 mm rain
- Puno in MayPeru · 205 kmHigh 14.6°C · Low 0.7°C · 20 mm rain
- Quillacollo in MayBolivia · 230 kmHigh 21.7°C · Low 9.0°C · 12 mm rain
- Juliaca in MayPeru · 234 kmHigh 14.2°C · Low -0.5°C · 22 mm rain
- Cochabamba in MayBolivia · 242 kmHigh 21.2°C · Low 9.1°C · 12 mm rain
- Sacaba in MayBolivia · 254 kmHigh 19.8°C · Low 8.7°C · 37 mm rain
- Tacna in MayPeru · 257 kmHigh 21.6°C · Low 15.0°C · 4.1 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.