San Diego (CA)
May
Weather in San Diego, California for May 2026
Your guide to San Diego weather in May - trends and predictions
Until now, May 2026 in San Diego has been nearly identical to the historical average, with a temperature of 19.4 °F (showing only a slight deviation of 0.4 °F).
The forecast for the next days in San Diego predicts temperatures to be around 20 °F, close to the historical average.
In general, the average temperature in San Diego at the beginning of May is 18 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 19.7 °F by the end of May.
With an average of 3 rainy days, San Diego experiences minimal rainfall in May.
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Temperatures
Rain 🌧️
More
28
Dry days
3
Rainy days
0
Snow days
19°/14°
Temperatures
18 km/h
Avg max wind
72 %
Avg humidity
San Diego Weather May
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Temperatures trend during May in San Diego
See the weather trend as well as the moving average line
May weather in San Diego day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Patchy rain possible | 18° /13° | 0.2 mm | 6 | |
| May 2 |  Overcast | 19° /13° | 0.2 mm | 6 | |
| May 3 | Overcast | 18° /14° | 0.2 mm | 5 | |
| May 4 |  Moderate or heavy rain shower | 17° /13° | 4.3 mm | 5 | |
| May 5 | Patchy rain possible | 17° /13° | 1.4 mm | 5 | |
| May 6 |  Cloudy | 18° /12° | 0 mm | 6 | |
| May 7 |  Sunny | 19° /13° | 0 mm | 6 | |
| May 8 |  Partly cloudy | 20° /14° | 0 mm | 6 | |
| May 9 | Patchy rain possible | 20° /14° | 0.2 mm | 6 | |
| May 10 | Sunny | 21° /14° | 0.2 mm | 7 | |
| May 11 | Cloudy | 21° /14° | 0 mm | 7 | |
| May 12 | Sunny | 20° /15° | 0.2 mm | 7 | |
| May 13 | Overcast | 19° /14° | 0 mm | 7 | |
| May 14 | Partly cloudy | 22° /15° | 0 mm | 9.6 | |
| May 15 | Patchy rain possible | 20° /16° | 0.1 mm | 0 | |
| May 16 | Patchy rain possible | 20° /17° | 0.3 mm | 4 | |
| May 17 | Patchy rain possible | 20° /16° | 0.3 mm | 4 | |
| May 18 | Sunny | 21° /17° | 0 mm | 5 | |
| May 19 | Sunny | 21° /17° | 0 mm | 5 | |
| May 20 | Sunny | 21° /18° | 0 mm | 5 | |
| May 21 | Sunny | 21° /18° | 0 mm | 5 | |
| May 22 | Patchy rain possible | 19° /18° | 0.2 mm | 4 | |
| May 23 | Patchy rain possible | 18° /17° | 0.3 mm | 4 | |
| May 24 | Partly cloudy | 20° /15° | 0 mm | 5 | |
| May 25 | Sunny | 19° /15° | 0 mm | 5 | |
| May 26 | Sunny | 19° /16° | 0 mm | 5 | |
| May 27 | Patchy rain possible | 19° /16° | 0.1 mm | 4 | |
| May 28 | Patchy rain possible | 19° /14° | 0.3 mm | 4 | |
| May 29 | Patchy rain possible | 20° /14° | 0.2 mm | 5 | |
| May 30 | Patchy rain possible | 19° /15° | 1 mm | 4 | |
| May 31 | Patchy rain possible | 23° /15° | 0.2 mm | 5 | |
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Important Notice
Our weather forecast for San Diego in May 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.
Change Month
San Diego in May - FAQ
What are the expected maximum and minimum temperatures in San Diego during May?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San Diego during May?
Expect minimal rainfall in San Diego during May, with a total of 11 mm over approximately 3 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in San Diego during May?
The average wind speed in San Diego during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in San Diego
Explore the daily rainfall trends and prepare for San Diegos May weather 💧
Typically, San Diego has 3 rainy days in May with a total of 11 mm of rainfall.
UV exposure in San Diego during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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