14 to 29°C
temperature
3120 hours
sunshine per day
570 mm
rain
269 days
dry
96 days
rain
0 days
snow

Climate of San Juan

San Juan has a desert climate. The temperature during the day is warm and you won't have rain here anytime soon. The average annual temperature for San Juan is 21° degrees and there is about 569 mm of rain in a year. It is dry for 255 days a year with an average humidity of 70% and an UV-index of 5.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 14°C and 29°C
  • Night:the average nighttime temperature is between 9°C and 21°C
  • Rain: it rains 96 days and there is a total of approximately 570 mm rainfall
  • Sun hours: throughout the year there are 3120 sun hours
Maximum temperature: between 14°C and 29°C
Warmest month: 29°C in January
Coldest month: 14°C in July
Night temperature: between 9°C and 21°C
Dry days: 269 days
Days with rain: 96 days
Days with snow: 0 days
Total rain sum: 570 mm
Hours of sunshine: 3120 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) 29 28 25 22 18 15 14 16 17 20 24 27
Night temp. (°C) 21 21 18 15 13 10 9 10 11 13 16 19
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 43 58 55 35 44 25 47 38 36 49 75 65
Days with rain 8 9 9 9 8 6 8 6 8 9 8 8
Dry days 23 19 22 21 23 24 23 25 22 22 22 23
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 11 9 9 8 7 6 7 8 8 9 11 11
Wind force (Bft) 3 3 3 3 3 3 3 3 3 3 3 3
UV-index 6 6 6 5 4 4 3 4 4 5 5 6

Best time to visit San Juan

The best time to visit San Juan in Argentina is from January through May and October through December. In this period you have a warm temperature and little precipitation. The highest average temperature in San Juan is 29°C in January and the lowest is 14°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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