San Juan

Villa Paula de Sarmiento, Argentina Climate

NASA POWER reanalysis for the half-degree grid cell around Villa Paula de Sarmiento, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

The warmest month is January, with an average high of 32°C; the coldest is July, with an average low of 3°C. A normal year brings 133 mm of precipitation.

Temperature through the year

The normal daily high and low and the record for every date at San Juan, since 1973. The line marks today.

Normal daily high and low temperature at Villa Paula de Sarmiento through the year, in °C, with the record for each date.-200204060JanFebMarAprMayJunJulAugSepOctNovDec
  • Normal low
  • Normal high
  • Record high
  • Record low

Normals for Sep 29

Normal high
24°C
Normal low
8°C
Record high
38°Cin 2011
Record low
-4°Cin 2013
Chance of a wet day
4%
Daylight
12 h 21 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.

MonthAvg highAvg lowRecord highRecord lowPrecipitationWet days
January32°C17°C45°C (2003)9°C (2019)25 mm6.2
February30°C16°C44°C (2025)6°C (2023)28 mm2.8
March28°C14°C42°C (2002)2°C (1977)16 mm3.1
April25°C10°C39°C (2002)-3°C (1980)6 mm0.0
May21°C7°C35°C (2008)-4°C (1993)6 mm0.0
June19°C4°C32°C (2012)-7°C (2011)3 mm0.0
July18°C3°C33°C (2006)-9°C (2011)3 mm0.0
August20°C4°C39°C (2015)-9°C (1981)3 mm0.0
September23°C6°C40°C (2018)-5°C (1974)6 mm0.0
October26°C10°C43°C (2009)0°C (1979)3 mm0.0
November29°C13°C45°C (2009)1°C (1979)15 mm3.0
December31°C16°C46°C (2023)6°C (2014)19 mm3.1
Year25°C10°C133 mm18

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.

133 mm in a normal year, most in February.

Chance of a wet day

The chance of at least 1 mm of precipitation in the reanalysis on each date at Villa Paula de Sarmiento, in percent.05101520JanFebMarAprMayJunJulAugSepOctNovDec
  • Chance of a wet day

Humidity and comfort

NASA POWER reanalysis, 1991-2020, for the grid cell around Villa Paula de Sarmiento.

Days with a mean dew point of 18°C or more are rare here in every month.

MonthDew pointHumidityDryComfortableHumidMuggyOppressiveMiserable
January8°C40%88%12%1%0%0%0%
February8°C43%89%10%1%0%0%0%
March7°C46%94%6%0%0%0%0%
April2°C45%100%0%0%0%0%0%
May-2°C44%100%0%0%0%0%0%
June-6°C37%100%0%0%0%0%0%
July-8°C36%100%0%0%0%0%0%
August-7°C33%100%0%0%0%0%0%
September-5°C34%100%0%0%0%0%0%
October-2°C33%100%0%0%0%0%0%
November2°C34%100%0%0%0%0%0%
December5°C36%96%4%0%0%0%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 August, with the sky 34 percent covered on average; the cloudiest is May, at 44 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 October, averaging 14.8 km/h at 10 meters (33 feet) above the ground.

Daylight and sunshine

The longest day is Dec 19, with 14 h 13 min of daylight; the shortest is Jun 18, with 10 h 05 min.

Hours of daylight at Villa Paula de Sarmiento through the year.0510152025JanFebMarAprMayJunJulAugSepOctNovDec
  • Day length

Solar energy

Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.

Sunrise and sunset calendar

Month pages

The weather in Villa Paula de Sarmiento 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.

A record is the highest or lowest value on the date in every year the station has reported, back to 1973. It rests on one station, so a neighbor a few miles away can hold different ones.

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

Records: NOAA GHCN-Daily, station ARM00087311, every year on file, quality-flagged values removed. 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.