October Weather in San Francisco

Last updated: March 2, 2024

The weather in San Francisco, Peru, during October is characterized by an average temperature of 16°C (61°F). Highs can soar to 24°C (75°F), while lows may dip to 10°C (50°F). Typically, the humidity level in San Francisco throughout October hovers around 65%.

10°C (50°F)

Minimum temperature

16°C (61°F)

Average temperature

24°C (75°F)

Maximum temperature

65%

Humidity

Precipitation and Sunshine hours

In October, San Francisco averages 299 mm (11.8 inches) of rainfall, typically over the course of 24 rainy days. The month enjoys an average of 12 hours 22 minutes of daylight, with the sun shining for approximately 9 hours 48 minutes each day. Additionally, there is a 19% probability of sunny days during this period.

299 mm (11.8 inches)

Precipitation

24 rainy days

Rainy days

9 hours 48 minutes

Sunshine hours

19%

Chance of sun

UV Index

In October, the UV Index in San Francisco reaches a maximum of 17, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 9 14 16 17 14 10 6 2 1 0 0
Exposure Low Moderate VeryHigh Extreme VeryHigh High Low
Time to burn 45 min 30 min 15 min 10 min 15 min 25 min 45 min

Compare San Francisco's Climate with Cities Worldwide