Last updated: March 2, 2024
The weather in San Francisco, Peru, during January is characterized by an average temperature of 16°C (61°F). Highs can soar to 24°C (75°F), while lows may dip to 11°C (52°F). Typically, the humidity level in San Francisco throughout January hovers around 93%.
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Average temperature
Maximum temperature
Humidity
In January, San Francisco averages 408 mm (16.0 inches) of rainfall, typically over the course of 24 rainy days. The month enjoys an average of 12 hours 45 minutes of daylight, with the sun shining for approximately 6 hours 44 minutes each day. Additionally, there is a 8% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In January, 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.
| 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 | 4 | 8 | 12 | 16 | 17 | 16 | 13 | 8 | 4 | 1 | 1 | 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 | ||||||