Climate averages 1991–2020
Santa Fe weather
in December.
A hot, wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Santa Fe: daytime highs average 29.2°C and nights cool to about 19.5°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 136 mm of rain on roughly 9 days, which makes December a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 10 min on an average December day.
The nearest other city in this atlas is Paraná (19 km away). In December its highs average 28.8°C, about as warm as Santa Fe, with 128 mm of rain.
Among the 67 cities listed in Argentina, Santa Fe ranks joint 20th of 67 for the warmest December highs and 58th of 67 for the driest December (rainfall, lowest first). The mean December high of those 67 cities is 27.9°C; Santa Fe is 1.3°C warmer than that mean.
From December to January, average highs rise by 1.3°C to 30.5°C, and monthly rainfall falls from 136 mm to 112 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
Santa Fe climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.5°C21.2°C | 21.2°C | 112 | 8.7 | 14.014 h |
| February | 28.9°C20.3°C | 20.3°C | 120 | 8.7 | 13.213 h |
| March | 27.1°C18.6°C | 18.6°C | 138 | 8.2 | 12.312 h |
| April | 23.3°C15.4°C | 15.4°C | 114 | 8.6 | 11.311 h |
| May | 19.7°C12.3°C | 12.3°C | 74 | 6.1 | 10.511 h |
| June | 17.0°C9.4°C | 9.4°C | 44 | 5.1 | 10.110 h |
| July | 16.4°C8.2°C | 8.2°C | 37 | 4.5 | 10.310 h |
| August | 19.1°C9.4°C | 9.4°C | 48 | 4.9 | 11.011 h |
| September | 21.4°C11.4°C | 11.4°C | 65 | 5.8 | 11.912 h |
| October | 24.1°C14.4°C | 14.4°C | 132 | 9.6 | 12.813 h |
| November | 26.9°C17.0°C | 17.0°C | 116 | 7.8 | 13.714 h |
| December, selected | 29.2°C19.5°C | 19.5°C | 136 | 8.9 | 14.214 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
- Paraná in DecemberArgentina · 19 kmHigh 28.8°C · Low 19.1°C · 128 mm rain
- Rafaela in DecemberArgentina · 86 kmHigh 29.2°C · Low 18.9°C · 129 mm rain
- Rosario in DecemberArgentina · 144 kmHigh 28.8°C · Low 18.5°C · 104 mm rain
- Gobernador Gálvez in DecemberArgentina · 154 kmHigh 28.7°C · Low 18.6°C · 104 mm rain
- San Nicolás de los Arroyos in DecemberArgentina · 193 kmHigh 28.4°C · Low 18.6°C · 108 mm rain
- Pergamino in DecemberArgentina · 250 kmHigh 28.2°C · Low 17.5°C · 107 mm rain
- Villa María in DecemberArgentina · 253 kmHigh 29.1°C · Low 18.9°C · 125 mm rain
- Gualeguaychú in DecemberArgentina · 255 kmHigh 28.6°C · Low 18.3°C · 128 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 Santa Fe) is explained once on the Santa Fe year overview and on the Sources, method and limits page.