September Weather in Santiago

Last updated: March 2, 2024

The weather in Santiago, Mexico, during September is characterized by an average temperature of 18°C (65°F). Highs can soar to 27°C (81°F), while lows may dip to 11°C (52°F). Typically, the humidity level in Santiago throughout September hovers around 81%.

11°C (52°F)

Minimum temperature

18°C (65°F)

Average temperature

27°C (81°F)

Maximum temperature

81%

Humidity

Precipitation and Sunshine hours

In September, Santiago averages 100 mm (3.9 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 12 hours 14 minutes of daylight, with the sun shining for approximately 9 hours 50 minutes each day. Additionally, there is a 26% probability of sunny days during this period.

100 mm (3.9 inches)

Precipitation

12 rainy days

Rainy days

9 hours 50 minutes

Sunshine hours

26%

Chance of sun

UV Index

In September, the UV Index in Santiago reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 14:00 and 16:00, 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 4 8 11 13 14 12 9 5 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 Santiago's Climate with Cities Worldwide