Climate averages 1991–2020
Montero weather
in December.
A hot, very wet month: the 4th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Montero: daytime highs average 29.2°C and nights cool to about 22.4°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 239 mm of rain on roughly 23 days, which makes December a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 08 min on an average December day.
The nearest other city in this atlas is Santa Cruz de la Sierra (50 km away). In December its highs average 29.2°C, about as warm as Montero, with 165 mm of rain.
Among the 14 cities listed in Bolivia, Montero ranks joint 4th of 14 for the warmest December highs and 12th of 14 for the driest December (rainfall, lowest first). The mean December high of those 14 cities is 22.5°C; Montero is 6.7°C warmer than that mean.
From December to January, average highs rise by 0.1°C to 29.3°C, and monthly rainfall falls from 239 mm to 232 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
Montero climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C22.5°C | 22.5°C | 232 | 22.6 | 13.013 h |
| February | 28.7°C22.2°C | 22.2°C | 210 | 21.1 | 12.713 h |
| March | 28.7°C22.0°C | 22.0°C | 155 | 19.6 | 12.212 h |
| April | 27.7°C20.8°C | 20.8°C | 96 | 14.0 | 11.712 h |
| May | 25.1°C18.6°C | 18.6°C | 82 | 12.0 | 11.311 h |
| June | 24.2°C17.6°C | 17.6°C | 61 | 9.9 | 11.111 h |
| July | 24.5°C16.8°C | 16.8°C | 46 | 6.6 | 11.211 h |
| August | 27.2°C18.2°C | 18.2°C | 50 | 5.8 | 11.512 h |
| September | 29.1°C20.0°C | 20.0°C | 96 | 8.4 | 12.012 h |
| October | 29.7°C21.6°C | 21.6°C | 137 | 14.6 | 12.512 h |
| November | 29.3°C21.8°C | 21.8°C | 172 | 17.1 | 12.913 h |
| December, selected | 29.2°C22.4°C | 22.4°C | 239 | 23.3 | 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
- Santa Cruz de la Sierra in DecemberBolivia · 50 kmHigh 29.2°C · Low 21.9°C · 165 mm rain
- Sucre in DecemberBolivia · 284 kmHigh 19.6°C · Low 10.7°C · 152 mm rain
- Sacaba in DecemberBolivia · 296 kmHigh 20.6°C · Low 12.2°C · 173 mm rain
- Cochabamba in DecemberBolivia · 309 kmHigh 21.8°C · Low 13.1°C · 132 mm rain
- Quillacollo in DecemberBolivia · 321 kmHigh 22.1°C · Low 13.0°C · 132 mm rain
- Trinidad in DecemberBolivia · 330 kmHigh 29.5°C · Low 23.6°C · 298 mm rain
- Potosí in DecemberBolivia · 363 kmHigh 14.9°C · Low 4.8°C · 133 mm rain
- Oruro in DecemberBolivia · 413 kmHigh 15.9°C · Low 4.6°C · 105 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 Montero) is explained once on the Montero year overview and on the Sources, method and limits page.