Weather San Juan today

PLACES IN THE AREA

18 °C	19 °C	9 am
23 °C	24 °C	12 pm
27 °C	26 °C	3 pm
23 °C	24 °C	9 pm

sunrise 6:38 am
sunset 8:43 pm

HOURLY

Weather forecast for San Juan Jan. 9, 2026

During the day partly cloudy. The highest temperature 27 °C. At night clear. The lowest temperature 18 °C.

Interactive map weather Argentina

GPS: -31.5375; -68.5364

altitude: 649 m
local time:

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Weather forecast San Juan, Argentina extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Today, Friday 01/09/2026
4 AM 2 AM	partly cloudy	17 °C 18 °C	0.0 mm	3.4 m/s 12 km/h south-southwest	1015 hPa	89 %	14 °C	17 %	0%	8%	8%	0%
5 AM 3 AM	partly cloudy	16 °C 17 °C	0.0 mm	3.8 m/s 14 km/h west-southwest	1015 hPa	90 %	14 °C	26 %	0%	10%	9%	10%
6 AM 4 AM	partly cloudy	16 °C 17 °C	0.0 mm	3.6 m/s 13 km/h west	1015 hPa	92 %	14 °C	26 %	0%	14%	14%	0%
7 AM 5 AM	partly cloudy	16 °C 17 °C	0.0 mm	3.6 m/s 13 km/h west	1015 hPa	92 %	14 °C	28 %	0%	21%	7%	0%
8 AM 6 AM	partly cloudy	17 °C 18 °C	0.0 mm	3.6 m/s 13 km/h west-southwest	1015 hPa	85 %	14 °C	28 %	0%	10%	21%	0%
9 AM 7 AM	partly cloudy	18 °C 18 °C	0.0 mm	3.1 m/s 11 km/h south-southwest	1015 hPa	75 %	14 °C	23 %	0%	6%	19%	0%
10 AM 8 AM	partly cloudy	20 °C 21 °C	0.0 mm	2.1 m/s 8 km/h south-southwest	1015 hPa	66 %	13 °C	32 %	0%	8%	23%	3%
11 AM 9 AM	partly cloudy	22 °C 23 °C	0.0 mm	1.8 m/s 6 km/h south-southwest	1014 hPa	58 %	13 °C	28 %	0%	4%	23%	1%
12 PM 10 AM	partly cloudy	23 °C 23 °C	0.0 mm	2.2 m/s 8 km/h south	1013 hPa	52 %	12 °C	20 %	0%	4%	15%	0%
1 PM 11 AM	partly cloudy	25 °C 25 °C	0.0 mm	3.2 m/s 12 km/h south	1013 hPa	47 %	12 °C	14 %	0%	2%	11%	0%
2 PM 12 PM	partly cloudy	26 °C 26 °C	0.0 mm	4.2 m/s 15 km/h south-southeast	1012 hPa	42 %	12 °C	28 %	0%	1%	18%	11%
3 PM 1 PM	partly cloudy	27 °C 27 °C	0.0 mm	4.9 m/s 18 km/h south-southeast	1011 hPa	39 %	11 °C	34 %	0%	0%	22%	15%
4 PM 2 PM	cloudy	27 °C 26 °C	0.0 mm	5.2 m/s 19 km/h south-southeast	1010 hPa	38 %	11 °C	49 %	0%	0%	22%	35%
5 PM 3 PM	partly cloudy	27 °C 27 °C	0.0 mm	5.3 m/s 19 km/h south-southeast	1010 hPa	39 %	11 °C	21 %	0%	2%	9%	12%
6 PM 4 PM	partly cloudy	26 °C 26 °C	0.0 mm	4.9 m/s 18 km/h south-southeast	1010 hPa	41 %	12 °C	25 %	0%	0%	14%	14%
7 PM 5 PM	cloudy	26 °C 26 °C	0.0 mm	4.9 m/s 18 km/h south-southeast	1010 hPa	43 %	12 °C	40 %	0%	2%	10%	33%
8 PM 6 PM	partly cloudy	25 °C 25 °C	0.0 mm	3.6 m/s 13 km/h south	1011 hPa	45 %	12 °C	22 %	0%	2%	7%	17%
9 PM 7 PM	partly cloudy	23 °C 23 °C	0.0 mm	2.0 m/s 7 km/h southwest	1012 hPa	52 %	13 °C	25 %	0%	0%	5%	20%
10 PM 8 PM	clear	22 °C 23 °C	0.0 mm	2.5 m/s 9 km/h west	1013 hPa	59 %	13 °C	9 %	0%	0%	3%	7%
11 PM 9 PM	partly cloudy	21 °C 22 °C	0.0 mm	2.1 m/s 8 km/h north-northwest	1013 hPa	63 %	14 °C	22 %	0%	2%	4%	18%
Tomorrow, Saturday 01/10/2026
12 AM 10 PM	partly cloudy	21 °C 22 °C	0.0 mm	1.0 m/s 4 km/h south-southeast	1014 hPa	69 %	14 °C	34 %	0%	1%	19%	16%
1 AM 11 PM	cloudy	20 °C 21 °C	0.0 mm	0.8 m/s 3 km/h west	1013 hPa	73 %	15 °C	46 %	0%	0%	22%	29%
2 AM 12 AM	partly cloudy	20 °C 22 °C	0.0 mm	0.7 m/s 3 km/h west-northwest	1013 hPa	76 %	15 °C	33 %	0%	0%	3%	32%
3 AM 1 AM	partly cloudy	19 °C 20 °C	0.0 mm	0.7 m/s 3 km/h east	1013 hPa	77 %	15 °C	31 %	0%	0%	7%	28%
4 AM 2 AM	clear	18 °C 19 °C	0.0 mm	0.9 m/s 3 km/h northeast	1012 hPa	80 %	15 °C	7 %	0%	0%	3%	4%
5 AM 3 AM	clear	18 °C 19 °C	0.0 mm	1.3 m/s 5 km/h east-northeast	1012 hPa	80 %	14 °C	2 %	0%	0%	0%	2%
6 AM 4 AM	clear	18 °C 19 °C	0.0 mm	1.5 m/s 5 km/h west	1013 hPa	79 %	14 °C	0 %	0%	0%	0%	0%
7 AM 5 AM	clear	18 °C 19 °C	0.0 mm	1.0 m/s 4 km/h southwest	1013 hPa	81 %	14 °C	3 %	0%	0%	2%	0%
8 AM 6 AM	clear	19 °C 20 °C	0.0 mm	1.1 m/s 4 km/h southwest	1014 hPa	76 %	15 °C	2 %	0%	0%	2%	0%
9 AM 7 AM	clear	22 °C 23 °C	0.0 mm	1.4 m/s 5 km/h north	1014 hPa	63 %	14 °C	0 %	0%	0%	0%	0%
10 AM 8 AM	clear	24 °C 25 °C	0.0 mm	1.8 m/s 6 km/h north	1014 hPa	54 %	14 °C	0 %	0%	0%	0%	0%
11 AM 9 AM	clear	26 °C 27 °C	0.0 mm	2.1 m/s 8 km/h north	1013 hPa	47 %	13 °C	4 %	0%	0%	3%	0%
12 PM 10 AM	partly cloudy	28 °C 29 °C	0.0 mm	2.6 m/s 9 km/h north-northeast	1012 hPa	43 %	14 °C	17 %	0%	0%	13%	5%
1 PM 11 AM	partly cloudy	29 °C 30 °C	0.0 mm	2.5 m/s 9 km/h northeast	1012 hPa	40 %	14 °C	25 %	0%	0%	7%	20%
2 PM 12 PM	partly cloudy	30 °C 31 °C	0.0 mm	2.1 m/s 8 km/h east-northeast	1011 hPa	36 %	13 °C	14 %	0%	0%	10%	6%
3 PM 1 PM	cloudy	31 °C 31 °C	0.0 mm	2.3 m/s 8 km/h east	1010 hPa	33 %	13 °C	52 %	0%	0%	6%	49%
4 PM 2 PM	cloudy	32 °C 31 °C	0.0 mm	3.9 m/s 14 km/h southeast	1009 hPa	27 %	11 °C	43 %	0%	0%	10%	38%
5 PM 3 PM	cloudy	32 °C 31 °C	0.0 mm	4.6 m/s 17 km/h south-southeast	1008 hPa	24 %	9 °C	49 %	0%	0%	14%	41%
6 PM 4 PM	cloudy	32 °C 31 °C	0.0 mm	4.8 m/s 17 km/h south-southeast	1008 hPa	26 %	10 °C	39 %	0%	0%	8%	32%
7 PM 5 PM	partly cloudy	31 °C 30 °C	0.0 mm	4.4 m/s 16 km/h south-southeast	1008 hPa	27 %	9 °C	19 %	0%	0%	1%	18%
8 PM 6 PM	partly cloudy	29 °C 28 °C	0.0 mm	4.0 m/s 14 km/h southeast	1009 hPa	30 %	10 °C	33 %	0%	0%	1%	32%
9 PM 7 PM	partly cloudy	27 °C 27 °C	0.0 mm	3.0 m/s 11 km/h east-southeast	1010 hPa	40 %	12 °C	25 %	0%	0%	1%	24%
10 PM 8 PM	partly cloudy	25 °C 26 °C	0.0 mm	1.9 m/s 7 km/h southeast	1011 hPa	48 %	13 °C	14 %	0%	0%	0%	14%
11 PM 9 PM	clear	25 °C 26 °C	0.0 mm	1.1 m/s 4 km/h west	1012 hPa	49 %	13 °C	3 %	0%	0%	0%	2%

San Juan, Argentina - information

State: Argentina

GPS coordinates: -31.5375; -68.5364

Time zone: America / Argentina / San Juan time difference in hours with time in US is -4 hours

Population: 109 123
Altitude: 649 m
The administrative part:

Provincia de San Juan, San Juan
Capital, San Juan

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Data source

Weather forecast for San Juan is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Long-term statistical averages

	average	min.	max.
January	25.1 °C	18.1 °C	32.2 °C
February	23.6 °C	17.0 °C	30.6 °C
March	20.4 °C	14.4 °C	27.3 °C
April	16.1 °C	10.2 °C	23.5 °C
May	11.6 °C	5.6 °C	19.4 °C
June	7.8 °C	2.0 °C	15.6 °C
July	7.7 °C	1.7 °C	15.3 °C
August	10.2 °C	3.5 °C	18.5 °C
September	13.4 °C	6.4 °C	21.2 °C
October	18.1 °C	10.8 °C	25.5 °C
November	21.7 °C	14.3 °C	29.0 °C
December	24.4 °C	17.2 °C	31.5 °C

Statistical averages in charts for San Juan

Astronomical information San Juan

data are always in the local time

Sun and light

Jan. 9, 2026

Sunrise:	Sunset:
6:38 am	8:43 pm
Noon:	Length of day:
1:41 pm	14:04
Start of civil twilight*:	End of civil twilight*:
6:10 am	9:11 pm
Start of nautical twilight*:	End of nautical twilight*:
5:37 am	9:44 pm
Start of astronomical twilight*:	End of astronomical twilight*:
5:01 am	10:20 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
01/09/2026 12:16 am	01/09/2026 12:57 pm
Next new moon:	Next full moon:
01/18/2026	02/01/2026