Avellaneda, Argentina Climate
The warmest month is January, with an average high of 31°C; the coldest is July, with an average low of 5°C. A normal year brings 1105 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 24
- Normal high
- 20°C
- Normal low
- 8°C
- Reanalysis high
- 25°Cin 1995
- Reanalysis low
- 3°Cin 2000
- Chance of a wet day
- 26%
- Daylight
- 12 h 11 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 31°C | 18°C | 42°C (2012) | 9°C (1992) | 109 mm | 9.3 |
| February | 30°C | 17°C | 40°C (2018) | 8°C (2003) | 113 mm | 11.3 |
| March | 28°C | 16°C | 37°C (2005) | 5°C (2014) | 115 mm | 9.3 |
| April | 23°C | 12°C | 35°C (2004) | 3°C (2008) | 108 mm | 9.0 |
| May | 19°C | 9°C | 30°C (1997) | -1°C (2008) | 81 mm | 6.2 |
| June | 16°C | 6°C | 27°C (2015) | -4°C (2012) | 54 mm | 6.0 |
| July | 15°C | 5°C | 27°C (1997) | -4°C (2007) | 62 mm | 6.2 |
| August | 18°C | 6°C | 31°C (2009) | -4°C (1995) | 65 mm | 6.2 |
| September | 20°C | 8°C | 33°C (1995) | -1°C (2019) | 72 mm | 6.0 |
| October | 23°C | 11°C | 35°C (2020) | 1°C (2015) | 112 mm | 9.3 |
| November | 26°C | 13°C | 39°C (2008) | 3°C (2007) | 105 mm | 9.0 |
| December | 30°C | 16°C | 43°C (1995) | 6°C (1993) | 109 mm | 9.3 |
| Year | 23°C | 11°C | 1105 mm | 97 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
1105 mm in a normal year, most in March.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Avellaneda.
The muggiest month is February, when 28 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 16°C | 63% | 22% | 24% | 28% | 21% | 5% | 1% |
| February | 16°C | 68% | 21% | 21% | 30% | 20% | 8% | 0% |
| March | 15°C | 71% | 27% | 25% | 30% | 12% | 5% | 0% |
| April | 12°C | 77% | 52% | 27% | 14% | 6% | 1% | 0% |
| May | 10°C | 82% | 73% | 18% | 7% | 2% | 0% | 0% |
| June | 7°C | 83% | 89% | 7% | 3% | 1% | 0% | 0% |
| July | 6°C | 82% | 92% | 5% | 2% | 0% | 0% | 0% |
| August | 7°C | 79% | 86% | 10% | 4% | 1% | 0% | 0% |
| September | 9°C | 76% | 84% | 11% | 4% | 1% | 0% | 0% |
| October | 11°C | 74% | 62% | 24% | 12% | 2% | 0% | 0% |
| November | 13°C | 68% | 46% | 31% | 18% | 5% | 0% | 0% |
| December | 14°C | 63% | 32% | 28% | 26% | 10% | 3% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is March, with the sky 46 percent covered on average; the cloudiest is July, at 59 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is September, averaging 15.8 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Dec 16, with 14 h 29 min of daylight; the shortest is Jun 21, with 9 h 49 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Avellaneda in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.