ClimateForecastDecemberJanuary >>

San Juan Climate by Month

San Juan maintains a fairly consistent warm average temperature. It also experiences much rainfall throughout the year. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

In San Juan temperatures are generally consistent throughout the year. Average daytime temperatures reach a very warm 31°C in May. In January, the coolest month of the year, temperatures drop to a comfortable 28°C. At night, expect cooler temperatures, averaging 23°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

San Juan experiences significant rainfall throughout the year, averaging 3106 mm of precipitation annually. San Juan can be quite wet during August, receiving approximately 644 mm of precipitation over 23 rainy days.

In contrast January, experiences much drier conditions, with 58 mm of rainfall, spread across a single rainy day.

The mean monthly precipitation over the year, including rain, hail and snow

The best time of year to visit San Juan in Philippines

San Juan has high temperatures year round ranging between 27°C and 30°C.
Other facts from our historical weather data:
  • When is the rainy season in San Juan?
    Rainy season in San Juan occurs in the months of May, June, July, August, September and October.
  • Which is the hottest month in San Juan?
    May has an average maximum temperature of 31°C and is the hottest month of the year.
  • Which is the coolest month in San Juan?
    The coolest month is January with an average maximum temperature of 28°C.
  • Which is the wettest month in San Juan?
    August tops the wettest month list with 644 mm of rainfall.
  • Which is the driest month in San Juan?
    January is the driest month with 58 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for San Juan

    Thu   Dec 12
    31°C | 22°C
    NW 7 km/h
    broken clouds and no rain

    broken clouds and no rain

    Fri   Dec 13
    31°C | 22°C
    W 7 km/h
    3.9 mm
    partly cloudy and thunder

    partly cloudy and thunder

    Sat   Dec 14
    30°C | 21°C
    N 7 km/h
    3.1 mm
    broken clouds and thunder

    broken clouds and thunder