ClimateForecastDecemberJanuary >>

San Juan Climate by Month

San Juan maintains a fairly consistent warm average temperature. It also has a relatively rainy climate with high levels of precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

The climate in San Juan remains fairly constant, offering comfortable temperatures throughout the year. On average, daytime temperatures range from a very warm 30°C in September to a comfortable 28°C in January. Nighttime temperatures can drop, with averages reaching 24°C in January.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

San Juan is known for its substantial rainfall, with annual precipitation reaching 1164 mm. The seasons in San Juan, bring significant changes in precipitation. The wettest month, August, receives high rainfall, with an average of 156 mm of precipitation. This rainfall is distributed across 22 rainy days. In contrast, the driest month, March, experiences much less rainfall, totaling 32 mm over 9 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

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

Sunshine over the year

San Juan enjoys sunny spells year-round. March sees up to 8.2 hours of daily sunshine, perfect for a sunny trip. June, the least sunny month, still offers a generous 6.2 hours of sun despite this cloudier time of the year.

Monthly hours of sunshine

Data from: Trinidad, Trinidad & Tobago (11 KM, 7 Miles).

Daily hours of sunshine

Data from: Trinidad, Trinidad & Tobago (11 KM, 7 Miles).

Average water temperature

The mean water temperature over the year in San Juan ranges from 26°C in February to 28°C in May.

Water temperature over the year

Data from: Trinidad, Trinidad & Tobago (11 KM, 7 Miles).

The best time of year to visit San Juan in Trinidad & Tobago

The best time to visit is during the drier months: February, March and April.

Other facts from our historical weather data:
  • Which is the hottest month in San Juan?
    September has an average maximum temperature of 30°C and is the hottest month of the year.
  • Which is the coolest month in San Juan?
    The coolest month is February with an average maximum temperature of 28°C.
  • Which is the wettest month in San Juan?
    August tops the wettest month list with 156 mm of rainfall.
  • Which is the driest month in San Juan?
    March is the driest month with 32 mm of precipitation.
  • Which is the sunniest month in San Juan?
    March is the sunniest month with an average of 247 hours of sunshine.

  • 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 05
    32°C | 25°C
    E 18 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Fri   Dec 06
    31°C | 24°C
    E 14 km/h
    0.4 mm
    partly cloudy and  chance of slight rain

    partly cloudy and chance of slight rain

    Sat   Dec 07
    32°C | 24°C
    E 18 km/h
    almost clear and no rain

    almost clear and no rain