September Weather in San Juan

Last updated: March 2, 2024

The weather in San Juan, Philippines, during September is characterized by an average temperature of 28°C (82°F). Highs can soar to 32°C (90°F), while lows may dip to 25°C (77°F). Typically, the humidity level in San Juan throughout September hovers around 83%.

25°C (77°F)

Minimum temperature

28°C (82°F)

Average temperature

32°C (90°F)

Maximum temperature

83%

Humidity

Precipitation and Sunshine hours

In September, San Juan averages 218 mm (8.6 inches) of rainfall, typically over the course of 25 rainy days. The month enjoys an average of 12 hours 9 minutes of daylight, with the sun shining for approximately 9 hours 20 minutes each day. Additionally, there is a 13% probability of sunny days during this period.

218 mm (8.6 inches)

Precipitation

25 rainy days

Rainy days

9 hours 20 minutes

Sunshine hours

13%

Chance of sun

UV Index

In September, the UV Index in San Juan reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 10 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 2 5 8 12 14 14 12 9 5 2 1 0 0
Exposure Low Moderate VeryHigh Extreme VeryHigh Moderate Low
Time to burn 45 min 30 min 15 min 10 min 15 min 30 min 45 min

Compare San Juan's Climate with Cities Worldwide