Last updated: March 2, 2024
The weather in San Francisco, Guatemala, during December is characterized by an average temperature of 24°C (75°F). Highs can soar to 34°C (93°F), while lows may dip to 15°C (58°F). Typically, the humidity level in San Francisco throughout December hovers around 86%.
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Average temperature
Maximum temperature
Humidity
In December, San Francisco averages 55 mm (2.2 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 11 hours 7 minutes of daylight, with the sun shining for approximately 8 hours 16 minutes each day. Additionally, there is a 55% probability of sunny days during this period.
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Chance of sun
In December, the UV Index in San Francisco reaches a maximum of 8, 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.
| 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 | 4 | 6 | 8 | 8 | 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 | ||||||