27 to 31°C
temperature
3009 hours
sunshine per day
781 mm
rain
96 days
dry
269 days
rain
0 days
snow

Climate of San Juan

San Juan has a tropical rainforest climate. It is usually (very) warm, humid and rainy all year round. The average annual temperature for San Juan is 29° degrees and there is about 779 mm of rain in a year. It is dry for 47 days a year with an average humidity of 83% and an UV-index of 6.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 27°C and 31°C
  • Night:the average nighttime temperature is between 17°C and 21°C
  • Rain: it rains 269 days and there is a total of approximately 781 mm rainfall
  • Sun hours: throughout the year there are 3009 sun hours
Maximum temperature: between 27°C and 31°C
Warmest month: 31°C in August
Coldest month: 27°C in January
Night temperature: between 17°C and 21°C
Dry days: 96 days
Days with rain: 269 days
Days with snow: 0 days
Total rain sum: 781 mm
Hours of sunshine: 3009 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. (°C) 27 27 28 29 29 30 30 31 31 30 28 27
Night temp. (°C) 17 17 18 19 20 21 21 21 21 21 20 18
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 31 34 47 77 129 64 67 73 74 78 66 41
Days with rain 19 17 20 23 27 22 24 23 25 24 23 22
Dry days 12 11 11 7 4 8 7 8 5 7 7 9
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 8 8 8 8 8 9 9 9 9 8 7 8
Wind force (Bft) 1 1 2 1 1 2 1 2 1 1 1 1
UV-index 6 6 6 6 6 6 6 6 6 6 6 6

Best time to visit San Juan

The best time to visit San Juan in the Dominican Republic is from January through April and June through December. In this period you have a warm temperature and little precipitation. The highest average temperature in San Juan is 31°C in August and the lowest is 27°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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