Climate averages 1991–2020
Villa Mercedes, Argentina weather
in December.
A hot, wet month: the 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Villa Mercedes, Argentina: daytime highs average 28.8°C and nights cool to about 17.6°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 96 mm of rain on roughly 12 days, which makes December a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 20 min on an average December day.
The nearest other city in this atlas is San Luis (91 km away). In December its highs average 28.9°C, about as warm as Villa Mercedes, Argentina, with 101 mm of rain.
Among the 67 cities listed in Argentina, Villa Mercedes, Argentina ranks joint 25th of 67 for the warmest December highs and 39th of 67 for the driest December (rainfall, lowest first). The mean December high of those 67 cities is 27.9°C; Villa Mercedes, Argentina is 0.9°C warmer than that mean.
From December to January, average highs rise by 0.9°C to 29.7°C, and monthly rainfall falls from 96 mm to 86 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
Villa Mercedes, Argentina climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C18.9°C | 18.9°C | 86 | 11.6 | 14.114 h |
| February | 28.3°C17.8°C | 17.8°C | 79 | 9.5 | 13.313 h |
| March | 26.0°C16.0°C | 16.0°C | 87 | 9.4 | 12.312 h |
| April | 21.8°C12.1°C | 12.1°C | 67 | 7.2 | 11.311 h |
| May | 18.5°C8.8°C | 8.8°C | 29 | 4.6 | 10.410 h |
| June | 16.0°C5.6°C | 5.6°C | 11 | 2.5 | 10.010 h |
| July | 15.4°C4.5°C | 4.5°C | 11 | 2.5 | 10.110 h |
| August | 18.6°C6.5°C | 6.5°C | 21 | 3.0 | 10.911 h |
| September | 20.9°C8.9°C | 8.9°C | 36 | 5.6 | 11.912 h |
| October | 23.3°C12.0°C | 12.0°C | 82 | 9.6 | 12.913 h |
| November | 26.2°C15.0°C | 15.0°C | 86 | 11.3 | 13.814 h |
| December, selected | 28.8°C17.6°C | 17.6°C | 96 | 11.7 | 14.314 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
- San Luis in DecemberArgentina · 91 kmHigh 28.9°C · Low 18.0°C · 101 mm rain
- Río Cuarto in DecemberArgentina · 119 kmHigh 28.3°C · Low 17.9°C · 107 mm rain
- Villa María in DecemberArgentina · 250 kmHigh 29.1°C · Low 18.9°C · 125 mm rain
- Córdoba in DecemberArgentina · 279 kmHigh 28.4°C · Low 17.7°C · 131 mm rain
- San Rafael in DecemberArgentina · 284 kmHigh 29.3°C · Low 16.7°C · 53 mm rain
- San Martín in DecemberArgentina · 288 kmHigh 30.9°C · Low 18.8°C · 39 mm rain
- Venado Tuerto in DecemberArgentina · 323 kmHigh 28.3°C · Low 17.9°C · 115 mm rain
- Mendoza in DecemberArgentina · 327 kmHigh 27.6°C · Low 16.3°C · 48 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 Villa Mercedes) is explained once on the Villa Mercedes, Argentina year overview and on the Sources, method and limits page.