San Diego
January
Weather in San Diego for January 2025
Your guide to San Diego weather in January - trends and predictions
Until now, January 2025 in San Diego has been nearly identical to the historical average, with a temperature of 16.7 °F (showing only a slight deviation of 0.4 °F).
The forecast for the upcoming days in San Diego predicts a temperature of 17.6 °F, which is slightly above the historical average.
In general, the average temperature in San Diego at the beginning of January is 16 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 14.4 °F by the end of January.
The climate of San Diego in January is notably wet, with an average of 15 rainy days, and a total of 110.3 mm of precipitation.
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Temperatures
Rain 🌧️
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16
Dry days
15
Rainy days
0
Snow days
16°/11°
Temperatures
17 km/h
Avg max wind
61 %
Avg humidity
San Diego in January average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  16° | 2  16° | 3 15° | 4  15° | |||
| 5 18° | 6  17° | 7  15° | 8 17° | 9 17° | 10 17° | 11  16° |
| 12 17° | 13 17° | 14 17° | 15 17° | 16 16° | 17 14° | 18 15° |
| 19 14° | 20 23° | 21 18° | 22 21° | 23 22° | 24 19° | 25 13° |
| 26 12° | 27 12° | 28 15° | 29 16° | 30 16° | 31 17° |
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Temperatures trend during January in San Diego
See the weather trend as well as the moving average line
January weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 | Moderate or heavy rain shower | 16° /10° | 9.5 mm | 4 | |
| Jan. 2 | Partly cloudy | 16° /11° | 0.7 mm | 4 | |
| Jan. 3 | Moderate rain at times | 15° /11° | 4.6 mm | 3 | |
| Jan. 4 | Patchy rain possible | 15° /11° | 1.1 mm | 4 | |
| Jan. 5 | Moderate or heavy rain shower | 18° /10° | 4.8 mm | 5 | |
| Jan. 6 | Sunny | 17° /9° | 0 mm | 5 | |
| Jan. 7 | Overcast | 15° /11° | 1.7 mm | 3 | |
| Jan. 8 | Partly cloudy | 17° /10° | 0 mm | 5 | |
| Jan. 9 | Sunny | 17° /9° | 0.1 mm | 5 | |
| Jan. 10 | Moderate or heavy rain shower | 17° /10° | 7.2 mm | 5 | |
| Jan. 11 | Cloudy | 16° /10° | 0.5 mm | 4 | |
| Jan. 12 | Sunny | 17° /8° | 0 mm | 5 | |
| Jan. 13 | Overcast | 17° /8° | 0 mm | 5 | |
| Jan. 14 | Moderate or heavy rain shower | 17° /10° | 9.5 mm | 5 | |
| Jan. 15 | Moderate rain at times | 17° /9° | 4.1 mm | 5 | |
| Jan. 16 | Moderate or heavy rain shower | 16° /10° | 8.9 mm | 4 | |
| Jan. 17 | Patchy rain possible | 14° /10° | 1.9 mm | 4 | |
| Jan. 18 | Partly cloudy | 15° /10° | 0 mm | 4 | |
| Jan. 19 | Patchy rain possible | 14° /9° | 0.3 mm | 3 | |
| Jan. 20 | Partly cloudy | 23° /10° | 0 mm | 0.7 | |
| Jan. 21 | Sunny | 18° /7° | 0 mm | 0.8 | |
| Jan. 22 | Overcast | 21° /8° | 0 mm | 0.6 | |
| Jan. 23 | Sunny | 22° /9° | 0 mm | 0.7 | |
| Jan. 24 | Sunny | 19° /14° | 0 mm | 0 | |
| Jan. 25 | Patchy rain possible | 13° /12° | 0.4 mm | 3 | |
| Jan. 26 | Patchy rain possible | 12° /11° | 1.5 mm | 3 | |
| Jan. 27 | Patchy rain possible | 12° /9° | 0.5 mm | 3 | |
| Jan. 28 | Sunny | 15° /8° | 0 mm | 4 | |
| Jan. 29 | Sunny | 16° /10° | 0 mm | 4 | |
| Jan. 30 | Sunny | 16° /11° | 0 mm | 4 | |
| Jan. 31 | Sunny | 17° /11° | 0 mm | 4 | |
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Important Notice
Our weather forecast for San Diego in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Diego forecast closer to your planned date for the most up-to-date weather information.
San Diego in January - FAQ
What are the expected maximum and minimum temperatures in San Diego during January?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San Diego during January?
Significant rainfall exceeding 110.3 mm is expected in San Diego during January, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in San Diego during January?
The average wind speed in San Diego during January is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in San Diego
Explore the daily rainfall trends and prepare for San Diegos January weather 💧
UV exposure in San Diego during January
Stay informed about UV levels for safe outdoor activities throughout the month of January ☀️
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