San Diego
January
Weather in San Diego for January 2025
Your guide to San Diego weather in January - trends and predictions
In general, the average temperature in San Diego at the beginning of January is 15.6 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 17.7 °F by the end of January.
Precipitation in San Diego during January is a rare event, with an average of fewer than 2 rainy days.
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30
Dry days
1
Rainy days
0
Snow days
17°/10°
Temperatures
17 km/h
Avg max wind
61 %
Avg humidity
San Diego in January average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | 2  15° | 3 15° | 4 16° | 5 16° | ||
| 6  16° | 7  16° | 8  16° | 9 17° | 10 16° | 11 16° | 12 17° |
| 13 17° | 14 15° | 15 16° | 16 16° | 17 15° | 18 17° | 19 15° |
| 20 16° | 21  16° | 22 15° | 23 16° | 24 17° | 25 16° | 26 20° |
| 27 20° | 28 18° | 29 17° | 30 17° | 31 16° |
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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 | 15° /12° | 14.3 mm | 4 | |
| Jan. 2 | Patchy rain possible | 15° /12° | 1 mm | 4 | |
| Jan. 3 | Moderate rain at times | 15° /12° | 6.9 mm | 4 | |
| Jan. 4 | Patchy rain possible | 16° /12° | 1.7 mm | 5 | |
| Jan. 5 | Moderate or heavy rain shower | 16° /11° | 7.2 mm | 4 | |
| Jan. 6 | Cloudy | 16° /11° | 0 mm | 5 | |
| Jan. 7 | Overcast | 16° /11° | 0.8 mm | 4 | |
| Jan. 8 | Partly cloudy | 16° /10° | 0 mm | 5 | |
| Jan. 9 | Patchy rain possible | 17° /11° | 0.2 mm | 5 | |
| Jan. 10 | Moderate or heavy rain shower | 16° /11° | 10.8 mm | 5 | |
| Jan. 11 | Cloudy | 16° /11° | 0.7 mm | 4 | |
| Jan. 12 | Cloudy | 17° /11° | 0 mm | 5 | |
| Jan. 13 | Overcast | 17° /11° | 0 mm | 5 | |
| Jan. 14 | Moderate or heavy rain shower | 15° /12° | 14.3 mm | 4 | |
| Jan. 15 | Moderate rain at times | 16° /12° | 6.2 mm | 4 | |
| Jan. 16 | Moderate or heavy rain shower | 16° /12° | 13.3 mm | 4 | |
| Jan. 17 | Patchy rain possible | 15° /11° | 2.9 mm | 4 | |
| Jan. 18 | Partly cloudy | 17° /11° | 0 mm | 5 | |
| Jan. 19 | Patchy rain possible | 15° /11° | 0.4 mm | 4 | |
| Jan. 20 | Patchy rain possible | 16° /12° | 6.7 mm | 4 | |
| Jan. 21 | Sunny | 16° /11° | 3.5 mm | 5 | |
| Jan. 22 | Sunny | 15° /11° | 6.8 mm | 4 | |
| Jan. 23 | Sunny | 16° /10° | 0.9 mm | 5 | |
| Jan. 24 | Sunny | 17° /10° | 0 mm | 5 | |
| Jan. 25 | Overcast | 16° /10° | 0.1 mm | 4 | |
| Jan. 26 | Sunny | 20° /11° | 0 mm | 6 | |
| Jan. 27 | Sunny | 20° /11° | 0 mm | 6 | |
| Jan. 28 | Cloudy | 18° /12° | 0.1 mm | 5 | |
| Jan. 29 | Patchy rain possible | 17° /13° | 1.8 mm | 4 | |
| Jan. 30 | Moderate or heavy rain shower | 17° /12° | 9.8 mm | 5 | |
| Jan. 31 | Sunny | 16° /12° | 0.1 mm | 5 | |
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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 17° and cooler nights around 10°. 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 220.6 mm is expected in San Diego during January, occurring over more than 1 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.
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