What to Expect from San Diego in January
January is right in the middle of San Diego's rainy season, bringing the most unpredictable weather of the year. Monthly rainfall often comes all on the same day, especially during winter storms.
More About: San Diego in the Winter
San Diego Weather in January
Average High Temperature: 65°F/18°C
Average Low Temperature: 49°F/9°C
Rain & Clouds Index: 1.98 inches (5.0 cm) rain, 72% sunshine
What to Pack, What to Wear in January
Pack an umbrella or rain jacket with hood for rainy days and a warm jacket if no rain is predicted. You won't need a heavy winter coat. Long-sleeved shirts and sweaters in layers work best.
San Diego January Events
- Restaurant Week: January and September are great months to sample some of the city's nicest restaurants, with special tasting menus and prices.
- Farmers Insurance Open Golf Tournament: Some of the biggest names in golf play on the course in Torrey Pines.
Especially Fun in JanuaryThe day after it rains, skies are sometimes exceptionally clear and great for photography.
If precipitation happens, try these Things to Do on a Rainy Day in San Diego
San Diego whale watching season runs from December through March. Use the San Diego whale watching guide to learn more about California whale-watching and San Diego excursions.
Averages and Reality
The weather information we've given above is best used as a general idea of what things may be like. The only rain all summer could fall on your perfect picnic or a winter day could be so warm you'll wish you packed your shorts.
Averages are helpful for planning ahead, but don't count on your trip being "average." Check the San Diego weather forecast before you leave home.