Climate averages 1991–2020
La Serena weather
in December.
A warm, very dry month: the 4th warmest and the joint 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in La Serena: daytime highs average 24.6°C and nights cool to about 16.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Rain is very rare: less than 1 mm falls in a typical December (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 01 min on an average December day.
The nearest other city in this atlas is Coquimbo (10 km away). In December its highs average 23.1°C, 1.5°C cooler than La Serena, with almost no rain (under 1 mm).
Among the 40 cities listed in Chile, La Serena ranks 20th of 40 for the warmest December highs and joint 2nd of 40 for the driest December (rainfall, lowest first). The mean December high of those 40 cities is 23.8°C; La Serena is 0.8°C warmer than that mean.
From December to January, average highs rise by 1.1°C to 25.8°C, and monthly rainfall stays under 1 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
La Serena climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.8°C18.0°C | 18.0°C | 0.2 | 0.1 | 13.814 h |
| February | 25.7°C18.2°C | 18.2°C | 0.5 | 0.0 | 13.213 h |
| March | 24.8°C17.7°C | 17.7°C | 4.5 | 0.5 | 12.312 h |
| April | 22.7°C16.2°C | 16.2°C | 3.0 | 0.7 | 11.411 h |
| May | 20.8°C14.5°C | 14.5°C | 20 | 2.1 | 10.611 h |
| June | 19.2°C12.1°C | 12.1°C | 30 | 2.3 | 10.310 h |
| July | 18.7°C10.5°C | 10.5°C | 15 | 1.9 | 10.410 h |
| August | 19.4°C11.2°C | 11.2°C | 15 | 1.9 | 11.011 h |
| September | 20.5°C12.4°C | 12.4°C | 5.4 | 0.9 | 11.912 h |
| October | 22.1°C13.7°C | 13.7°C | 4.7 | 0.6 | 12.813 h |
| November | 23.6°C15.2°C | 15.2°C | 0.6 | 0.1 | 13.614 h |
| December, selected | 24.6°C16.6°C | 16.6°C | 0.5 | 0.1 | 14.014 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
- Coquimbo in DecemberChile · 10 kmHigh 23.1°C · Low 15.8°C · 0.5 mm rain
- Ovalle in DecemberChile · 77 kmHigh 28.7°C · Low 15.6°C · 0.3 mm rain
- Copiapó in DecemberChile · 296 kmHigh 28.6°C · Low 17.0°C · 0.5 mm rain
- San Juan, Argentina in DecemberArgentina · 317 kmHigh 30.3°C · Low 17.7°C · 22 mm rain
- Rawson in DecemberArgentina · 319 kmHigh 29.8°C · Low 16.9°C · 22 mm rain
- Viña del Mar in DecemberChile · 348 kmHigh 22.4°C · Low 14.1°C · 2.5 mm rain
- Quilpué in DecemberChile · 350 kmHigh 22.8°C · Low 13.5°C · 2.5 mm rain
- Valparaíso in DecemberChile · 350 kmHigh 19.9°C · Low 14.9°C · 2.8 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 La Serena) is explained once on the La Serena year overview and on the Sources, method and limits page.
Coquimbo lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.