Last updated: June 24, 2025
In January, the average temperature in Santa Ana, United States hovers around 13°C (56°F). Temperatures can fluctuate significantly, with a minimum of 3°C (38°F) and a maximum of 31°C (88°F). Expect about 71 mm (2.8 in) of precipitation spread over 5 days, contributing to an average humidity of 74%. Prepare for a mix of mild warmth and occasional rain!
In January in Santa Ana, the average temperature is 13°C (56°F). The maximum can reach 31°C (88°F), while the minimum can be as low as 3°C (38°F). It's advisable to pack layers to accommodate for the varying temperatures during your travels.
In Santa Ana in January, the precipitation amount is 71 mm (2.8 in) over the course of 5 days.
In Santa Ana in January humidity is 74%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, especially for travelers unaccustomed to such conditions.
In Santa Ana in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Santa Ana for better planning.
UV Risk Categories
Weather in Santa Ana varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Santa Ana, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 13°C (56°F) | 71 mm (2.8 inches) | 74% | moderate |
February Weather | 13°C (56°F) | 60 mm (2.3 inches) | 79% | high |
March Weather | 14°C (58°F) | 68 mm (2.7 inches) | 75% | very high |
April Weather | 17°C (62°F) | 27 mm (1.1 inches) | 70% | very high |
May Weather | 17°C (64°F) | 13 mm (0.5 inches) | 70% | extreme |
June Weather | 20°C (68°F) | 1 mm (0.0 inches) | 72% | extreme |
July Weather | 23°C (73°F) | 2 mm (0.1 inches) | 73% | extreme |
August Weather | 23°C (74°F) | 2 mm (0.1 inches) | 69% | very high |
September Weather | 22°C (72°F) | 3 mm (0.1 inches) | 68% | very high |
October Weather | 20°C (69°F) | 10 mm (0.4 inches) | 67% | high |
November Weather | 17°C (62°F) | 25 mm (1.0 inches) | 68% | moderate |
December Weather | 13°C (56°F) | 74 mm (2.9 inches) | 71% | moderate |