Last updated: August 27, 2025
In December, the average temperature in San Francisco, Philippines hovers around 26°C (80°F), making it a warm destination. Visitors can expect a minimum of 22°C (72°F) and a maximum of 32°C (91°F) during this month. However, be prepared for some rain, as 245 mm (9.7 in) of precipitation may occur over 19 days. With an average humidity level of 86%, the air can feel quite tropical.
In December in San Francisco, the average temperature is 26°C (80°F). Maximum temperatures can reach 32°C (91°F), while minimums can drop as low as 22°C (72°F). This makes it an ideal time for travelers seeking warm and pleasant weather.
In San Francisco in December, the precipitation amounts to 245 mm (9.7 in) over a span of 19 days.
In San Francisco in December humidity is 86%. With an average temperature of 26°C (80°F), this humidity feels like a thick, warm blanket enveloping you, making travel feel exhausting and sticky, as sweat clings to your skin and every step becomes a laborious task in the sweltering conditions.
In San Francisco in December, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in San Francisco.
UV Risk Categories
Weather in San Francisco varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Francisco, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 26°C (79°F) | 123 mm (4.8 inches) | 81% | extreme |
| February Weather | 26°C (79°F) | 76 mm (3.0 inches) | 78% | extreme |
| March Weather | 27°C (81°F) | 86 mm (3.4 inches) | 76% | extreme |
| April Weather | 28°C (83°F) | 75 mm (3.0 inches) | 77% | extreme |
| May Weather | 28°C (83°F) | 234 mm (9.2 inches) | 78% | extreme |
| June Weather | 27°C (81°F) | 411 mm (16.2 inches) | 80% | extreme |
| July Weather | 26°C (80°F) | 490 mm (19.3 inches) | 81% | extreme |
| August Weather | 26°C (80°F) | 458 mm (18.0 inches) | 83% | extreme |
| September Weather | 26°C (80°F) | 493 mm (19.4 inches) | 85% | extreme |
| October Weather | 26°C (80°F) | 435 mm (17.1 inches) | 80% | extreme |
| November Weather | 27°C (80°F) | 176 mm (6.9 inches) | 83% | extreme |
| December Weather | 26°C (80°F) | 245 mm (9.7 inches) | 86% | extreme |