Climate averages 1991–2020
Junín weather
in December.
A hot, wet month: the 2nd warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Junín: daytime highs average 28.0°C and nights cool to about 17.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 103 mm of rain on roughly 9 days, which makes December a wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 25 min on an average December day.
The nearest other city in this atlas is Pergamino (85 km away). In December its highs average 28.2°C, about as warm as Junín, with 107 mm of rain.
Among the 67 cities listed in Argentina, Junín ranks joint 37th of 67 for the warmest December highs and 42nd of 67 for the driest December (rainfall, lowest first). The mean December high of those 67 cities is 27.9°C; Junín is 0.1°C warmer than that mean.
From December to January, average highs rise by 0.9°C to 28.9°C, and monthly rainfall rises from 103 mm to 114 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
Junín climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C18.6°C | 18.6°C | 114 | 8.7 | 14.214 h |
| February | 27.2°C17.7°C | 17.7°C | 103 | 8.2 | 13.413 h |
| March | 25.6°C16.1°C | 16.1°C | 100 | 8.4 | 12.312 h |
| April | 21.9°C12.8°C | 12.8°C | 90 | 8.3 | 11.211 h |
| May | 18.1°C9.8°C | 9.8°C | 62 | 6.3 | 10.310 h |
| June | 15.1°C6.7°C | 6.7°C | 38 | 4.7 | 9.910 h |
| July | 14.3°C5.6°C | 5.6°C | 32 | 4.3 | 10.110 h |
| August | 17.2°C7.0°C | 7.0°C | 45 | 4.2 | 10.811 h |
| September | 19.2°C8.9°C | 8.9°C | 67 | 6.3 | 11.812 h |
| October | 21.9°C11.8°C | 11.8°C | 119 | 10.0 | 12.913 h |
| November | 25.4°C14.6°C | 14.6°C | 103 | 8.7 | 13.914 h |
| December, selected | 28.0°C17.2°C | 17.2°C | 103 | 9.1 | 14.414 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
- Pergamino in DecemberArgentina · 85 kmHigh 28.2°C · Low 17.5°C · 107 mm rain
- Venado Tuerto in DecemberArgentina · 133 kmHigh 28.3°C · Low 17.9°C · 115 mm rain
- San Nicolás de los Arroyos in DecemberArgentina · 156 kmHigh 28.4°C · Low 18.6°C · 108 mm rain
- Luján in DecemberArgentina · 168 kmHigh 28.1°C · Low 17.1°C · 93 mm rain
- Gobernador Gálvez in DecemberArgentina · 176 kmHigh 28.7°C · Low 18.6°C · 104 mm rain
- Zárate in DecemberArgentina · 185 kmHigh 28.0°C · Low 17.4°C · 104 mm rain
- Rosario in DecemberArgentina · 185 kmHigh 28.8°C · Low 18.5°C · 104 mm rain
- Pilar in DecemberArgentina · 187 kmHigh 27.9°C · Low 17.2°C · 93 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 Junín) is explained once on the Junín year overview and on the Sources, method and limits page.