Last updated: June 24, 2025
In December, the average temperature in Oakland, United States hovers around 2°C (36°F), with a range that can plunge to a chilly -13°C (10°F) or rise to a mild 17°C (63°F). Expect 111 mm (4.4 in) of precipitation spread over 10 days, making it a relatively wet month. Coupled with an average humidity of 80%, this time of year brings a unique atmosphere to the region.
In December in Oakland, the average temperature is 2°C (36°F). The maximum can reach 17°C (63°F), while the minimum can drop to as low as -13°C (10°F). Be prepared for a wide temperature range and pack accordingly for your travels!
In Oakland in December, the precipitation amount is 111 mm (4.4 in) over a span of 10 days.
In Oakland in December humidity is 80%. With an average temperature of 2°C (36°F), this humidity feels like a heavy, damp chill that seeps into your bones, making it challenging for outdoor adventures and often necessitating layered clothing to stay warm and comfortable while exploring.
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 | 0°C (32°F) | 70 mm (2.8 inches) | 84% | moderate |
| February Weather | 2°C (35°F) | 99 mm (3.9 inches) | 82% | moderate |
| March Weather | 4°C (40°F) | 95 mm (3.8 inches) | 81% | high |
| April Weather | 10°C (51°F) | 118 mm (4.7 inches) | 78% | very high |
| May Weather | 16°C (61°F) | 130 mm (5.1 inches) | 69% | very high |
| June Weather | 21°C (70°F) | 99 mm (3.9 inches) | 69% | very high |
| July Weather | 24°C (76°F) | 147 mm (5.8 inches) | 62% | very high |
| August Weather | 23°C (74°F) | 131 mm (5.2 inches) | 65% | very high |
| September Weather | 20°C (68°F) | 114 mm (4.5 inches) | 68% | very high |
| October Weather | 14°C (58°F) | 141 mm (5.6 inches) | 74% | high |
| November Weather | 6°C (44°F) | 88 mm (3.5 inches) | 82% | moderate |
| December Weather | 2°C (36°F) | 111 mm (4.4 inches) | 80% | low |