September Weather in San Jose

Last updated: March 2, 2024

The weather in San Jose, Mexico, during September is characterized by an average temperature of 18°C (65°F). Highs can soar to 25°C (78°F), while lows may dip to 12°C (54°F). Typically, the humidity level in San Jose throughout September hovers around 86%.

12°C (54°F)

Minimum temperature

18°C (65°F)

Average temperature

25°C (78°F)

Maximum temperature

86%

Humidity

Precipitation and Sunshine hours

In September, San Jose averages 339 mm (13.3 inches) of rainfall, typically over the course of 28 rainy days. The month enjoys an average of 12 hours 13 minutes of daylight, with the sun shining for approximately 9 hours 25 minutes each day. Additionally, there is a 16% probability of sunny days during this period.

339 mm (13.3 inches)

Precipitation

28 rainy days

Rainy days

9 hours 25 minutes

Sunshine hours

16%

Chance of sun

UV Index

In September, the UV Index in San Jose reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, 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 0 1 2 5 9 12 14 14 11 8 4 2 1
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 Jose's Climate with Cities Worldwide