9 to 11°C
temperature
2744 hours
sunshine per day
1755 mm
rain
57 days
dry
277 days
rain
31 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 10° degrees and there is about 1755 mm of rain in a year. It is dry for 71 days a year with an average humidity of 69% and an UV-index of 3.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 9°C and 11°C
  • Night:the average nighttime temperature is between 4°C and 6°C
  • Rain: it rains 277 days and there is a total of approximately 1755 mm rainfall
  • Snow: it snows an average of 31 days per year
  • Sun hours: throughout the year there are 2744 sun hours
Maximum temperature: between 9°C and 11°C
Warmest month: 11°C in May
Coldest month: 9°C in January
Night temperature: between 4°C and 6°C
Dry days: 57 days
Days with rain: 277 days
Days with snow: 31 days
Total rain sum: 1755 mm
Hours of sunshine: 2744 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) 9 9 10 10 11 11 10 11 11 10 10 9
Night temp. (°C) 5 5 5 5 5 5 4 4 5 6 6 5
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 242 206 250 175 83 32 24 36 86 188 195 238
Days with rain 29 26 30 26 22 13 10 14 22 28 27 30
Days with snow 5 5 3 2 - 1 2 2 1 1 3 6
Dry days - - - 2 9 16 19 15 7 2 - -
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 6 6 6 7 6 7 9 9 9 9 8 7
Wind force (Bft) 2 2 2 2 2 2 2 2 2 2 2 2
UV-index 2 2 2 3 3 3 3 3 3 2 3 2

Best time to visit San Juan

The best time to visit San Juan in Peru is from May through September. In this period you have a very cold temperature and little precipitation. The highest average temperature in San Juan is 11°C in May and the lowest is 9°C in January.

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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