Typical Weather in San Diego, CA in January
66° F Avg High
50° F Avg Low
4 Rainy Days
☀️ Temperature Summary
January is one of the cooler months of the year for San Diego, with highs averaging around 66°F. Overnight lows can reach 50°F.
January is a great time to visit San Diego, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
You can expect about a 12% chance of rain for any given day in January. It's one of the rainier months of the year for San Diego, with total rainfall for the month around 2 inches.
Rainfall Throughout the Year
Planning a trip to San Diego? Try our free trip weather planner