15 to 30°C
temperature
3583 hours
sunshine per day
82 mm
rain
316 days
dry
49 days
rain
0 days
snow

Climate of San Juan

San Juan has a tundra climate. It is cold here all year round. The average annual temperature for San Juan is 23° degrees and there is about 81 mm of rain in a year. It is dry for 286 days a year with an average humidity of 43% and an UV-index of 5.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 15°C and 30°C
  • Night:the average nighttime temperature is between 5°C and 19°C
  • Rain: it rains 49 days and there is a total of approximately 82 mm rainfall
  • Sun hours: throughout the year there are 3583 sun hours
Maximum temperature: between 15°C and 30°C
Warmest month: 30°C in January
Coldest month: 15°C in July
Night temperature: between 5°C and 19°C
Dry days: 316 days
Days with rain: 49 days
Days with snow: 0 days
Total rain sum: 82 mm
Hours of sunshine: 3583 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for San Juan.

Precipitation graph

This graph shows the average amount of rainfall per month for San Juan.

Climate table of San Juan

In this climate table you can see at a glance what the average weather per month is for San Juan. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for San Juan might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 30 29 26 23 19 16 15 18 20 24 27 30
Night temp. (°C) 19 18 16 12 9 6 5 7 9 12 15 17
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 23 15 9 3 2 1 1 2 2 3 6 15
Days with rain 8 7 6 4 2 2 2 2 2 3 3 8
Dry days 23 21 25 26 29 28 29 29 28 28 27 23
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 10 10 10 10 10 10 10 10 10 10 10 10
Wind force (Bft) 2 2 2 2 2 2 2 2 2 3 3 2
UV-index 7 6 6 4 4 4 3 4 5 5 6 6

Best time to visit San Juan

The best time to visit San Juan in Argentina is from January through May and August through December. In this period you have a warm temperature and almost no precipitation. The highest average temperature in San Juan is 30°C in January and the lowest is 15°C in July.

Climate of San Juan by month

What is the average climate in a given month for San Juan? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

San Juan weather experiences

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