December Weather in San Juan

Last updated: March 2, 2024

The weather in San Juan, Philippines, during December is characterized by an average temperature of 24°C (75°F). Highs can soar to 30°C (86°F), while lows may dip to 18°C (65°F). Typically, the humidity level in San Juan throughout December hovers around 85%.

18°C (65°F)

Minimum temperature

24°C (75°F)

Average temperature

30°C (86°F)

Maximum temperature

85%

Humidity

Precipitation and Sunshine hours

In December, San Juan averages 60 mm (2.3 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 11 hours 4 minutes of daylight, with the sun shining for approximately 8 hours 51 minutes each day. Additionally, there is a 50% probability of sunny days during this period.

60 mm (2.3 inches)

Precipitation

11 rainy days

Rainy days

8 hours 51 minutes

Sunshine hours

50%

Chance of sun

UV Index

In December, the UV Index in San Juan reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 15 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 1 2 5 7 9 9 8 6 3 1 1 0 0
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

Compare San Juan's Climate with Cities Worldwide