Last updated: June 24, 2025
In Oakland, United States, the average temperature in December hovers around -1°C (31°F). This month can bring a chilly range with minimums plummeting to -23°C (-10°F) and maxing out at a comfortable 22°C (71°F). Expect about 35 mm (1.4 in) of precipitation over the span of 4 days, accompanied by an average humidity of 83%. Prepare accordingly to enjoy the diverse weather this month brings!
In December in Oakland, the average temperature is -1°C (31°F). The maximum can reach 22°C (71°F) and the minimum can be as low as -23°C (-10°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.
In Oakland in December, the precipitation amount is 35 mm (1.4 in) over a span of 4 days.
In Oakland in December humidity is 83%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, icy blanket enveloping you, making each step outside feel like a struggle against the cold, damp air that clings to your skin, often leaving you wishing for warmth and refuge indoors.
In Oakland in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Oakland, you can visit Hourly UV Index in Oakland.
UV Risk Categories
Weather in Oakland varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Oakland, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 32 mm (1.3 inches) | 76% | moderate |
| February Weather | -4°C (25°F) | 34 mm (1.3 inches) | 80% | moderate |
| March Weather | 5°C (41°F) | 93 mm (3.7 inches) | 73% | high |
| April Weather | 10°C (50°F) | 59 mm (2.3 inches) | 74% | very high |
| May Weather | 17°C (63°F) | 156 mm (6.2 inches) | 78% | very high |
| June Weather | 24°C (75°F) | 125 mm (4.9 inches) | 82% | very high |
| July Weather | 25°C (78°F) | 73 mm (2.9 inches) | 83% | very high |
| August Weather | 23°C (74°F) | 103 mm (4.1 inches) | 80% | very high |
| September Weather | 21°C (69°F) | 98 mm (3.9 inches) | 75% | very high |
| October Weather | 11°C (53°F) | 137 mm (5.4 inches) | 75% | high |
| November Weather | 4°C (40°F) | 32 mm (1.3 inches) | 82% | moderate |
| December Weather | -1°C (31°F) | 35 mm (1.4 inches) | 83% | low |