San Juan Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit San Juan.
Climate overview of San Juan
The climate in San Juan, Luzon, Philippines, is remarkably consistent, with temperatures year-round averaging 29°C (84°F). The warmest month is May at 31°C (88°F), and the coolest is January at 28°C (82°F).
With around 3106 mm (122 in) of annual rainfall, San Juan has a notably wet climate. However, this rainfall is not evenly distributed — the city has a distinct rainy season from May to October. The wettest month is August.
San Juan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Juan — and find the best time to visit.
Monthly Temperature in San Juan
In San Juan temperatures are generally consistent throughout the year. Average daytime temperatures reach a very warm 31°C (88°F) in May. In January, the coolest month of the year, temperatures drop to a comfortable 28°C (82°F).
At night, temperatures range from around 25°C (77°F) in May to 23°C (73°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in San Juan
San Juan experiences significant rainfall throughout the year, averaging 3106 mm (122 in) of precipitation annually. San Juan can be quite wet during August, receiving approximately 644 mm (25 in) of precipitation over 23 rainy days.
In contrast, during the driest month (January), you will experience much drier conditions, with 58 mm (2.3 in) of precipitation spread across a single rainy day days. For more details, please visit our San Juan Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Humidity in San Juan by Month
The city experiences its highest humidity in August, reaching 93%. In March, the humidity drops to its lowest level at 84%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit San Juan
To make the most of your visit, consider exploring early in the morning or during the pleasant late afternoon hours when the temperature is most comfortable.
Be aware that May, June, July, August, September and October constitute the rainy season, with significant precipitation. Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.
Frequently asked questions about the climate in San Juan
What is the best time to visit San Juan?
January, February and March typically offer the most optimal weather in San Juan. In contrast, May, June, July, August, September and October tend to have less optimal conditions. San Juan has a distinct rainy season from May to October.
What temperatures can I expect in San Juan?
Daytime highs range from 28°C (82°F) in January to 31°C (88°F) in May. Nighttime lows range from 23°C (73°F) to 25°C (77°F). Temperatures stay relatively stable year-round.
How much rain does San Juan get?
Annual rainfall is around 3106 mm (122 in). August is the wettest month with 644 mm (25 in), while January is the driest with 58 mm (2.3 in).
San Juan 3-Day Forecast
San Juan 3-Day Forecast
San Juan on the map
San Juan is highlighted — select any city to see its climate.
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