13 to 27°C
temperature
3101 hours
sunshine per day
627 mm
rain
255 days
dry
110 days
rain
0 days
snow

Climate of San Juan

San Juan has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for San Juan is 39° degrees and there is about 247 inch of rain in a year. It is dry for 232 days a year with an average humidity of 74% and an UV-index of 5.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 13°C and 27°C
  • Night:the average nighttime temperature is between 10°C and 22°C
  • Rain: it rains 110 days and there is a total of approximately 627 mm rainfall
  • Sun hours: throughout the year there are 3101 sun hours
Maximum temperature: between 13°C and 27°C
Warmest month: 27°C in January
Coldest month: 13°C in July
Night temperature: between 10°C and 22°C
Dry days: 255 days
Days with rain: 110 days
Days with snow: 0 days
Total rain sum: 627 mm
Hours of sunshine: 3101 hours

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. (°F) 81 79 75 70 64 58 56 59 61 66 72 78
Night temp. (°F) 71 70 66 62 57 52 50 51 53 57 62 67
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (inch) 20 26 25 16 16 14 22 18 19 20 27 24
Days with rain 9 10 11 10 8 6 9 8 9 10 10 10
Dry days 22 18 20 20 23 24 22 23 21 21 20 21
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 11 9 9 8 6 6 6 8 8 9 11 11
Wind force (Bft) 3 3 3 3 3 4 4 4 4 4 3 3
UV-index 6 6 6 5 4 4 3 4 5 5 6 6

Best time to visit San Juan

The best time to visit San Juan in Uruguay 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 81°F in January and the lowest is 56°F 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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