Last updated: June 24, 2025
In San Leandro, United States, the average temperature in January hovers around 10°C (51°F). Expect a minimum of 0°C (32°F) and a maximum of 25°C (78°F) during this month. Precipitation is notable, with about 94 mm (3.7 in) falling over 8 days, and an average humidity of 82% will keep the air feeling quite moist.
In January in San Leandro, the average temperature is 10°C (51°F). The maximum can reach 25°C (78°F), while the minimum can drop to as low as 0°C (32°F). Be sure to pack layers for your trip, as temperatures can vary significantly throughout the day.
In San Leandro in January, the precipitation amount is 94 mm (3.7 in) over the course of 8 days.
In San Leandro in January humidity is 82%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that clings to your skin, making outdoor adventures less appealing and prompting travelers to seek cozy indoor activities or warm drinks to counter the brisk air.
In San Leandro in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in San Leandro, you can check the information here.
UV Risk Categories
Weather in San Leandro varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in San Leandro, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 10°C (51°F) | 94 mm (3.7 inches) | 82% | moderate |
February Weather | 11°C (53°F) | 91 mm (3.6 inches) | 84% | moderate |
March Weather | 12°C (54°F) | 73 mm (2.9 inches) | 82% | very high |
April Weather | 14°C (58°F) | 29 mm (1.2 inches) | 78% | very high |
May Weather | 15°C (60°F) | 18 mm (0.7 inches) | 71% | very high |
June Weather | 18°C (64°F) | 2 mm (0.1 inches) | 64% | extreme |
July Weather | 18°C (64°F) | 0 mm (0.0 inches) | 58% | extreme |
August Weather | 18°C (65°F) | 0 mm (0.0 inches) | 54% | very high |
September Weather | 19°C (66°F) | 1 mm (0.0 inches) | 55% | very high |
October Weather | 17°C (63°F) | 24 mm (1.0 inches) | 62% | high |
November Weather | 13°C (56°F) | 42 mm (1.7 inches) | 78% | moderate |
December Weather | 10°C (51°F) | 80 mm (3.2 inches) | 80% | moderate |