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San Juan Weather in September
September in San Juan sees daytime temperatures around 30°C (86°F) and lows of 25°C (77°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in San Juan in September
As part of the rainy season, San Juan sees around 19 days of rain in September, with an average of 422 mm (17 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.
Temperature in San Juan in September
If you're visiting San Juan in September, expect highs of 30°C (86°F) and overnight lows around 25°C (77°F). This kind of day-to-night contrast is typical for this time of year. At 25°C (77°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.September in San Juan can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
San Juan Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
63%
Precipitation
422 mm (17 in)
Rainy days
19 days
Humidity
92% *
* Data from: Baguio, Philippines (39 KM, 24 Miles).
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.
Best Places in Philippines in September
Find out more about the weather in Philippines and which places have the best travel conditions in this month. See all of Philippines in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San Juan in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything!
What To Do in San Juan in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
San Juan 3-Day Forecast
More climate data for San Juan
See the full San Juan climate overview or explore weather in Philippines.
Popular in September
Where to go in September - average daytime high across popular destinations.
Angeles City
31°C (88°F) Manila32°C (90°F) Cebu City31°C (88°F) Mactan30°C (86°F) Puerto Princesa30°C (86°F) Davao City31°C (88°F) Boracay29°C (84°F) Panglao City
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