San Diego Weather in May

The climate in San Diego during May can be summarized as hot, humid and reasonably dry.

May is in the spring in San Diego and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 20°C (68°F) is normal.

On average May is the 3rd wettest month of the year in San Diego with around 79mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.4 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Diego in May 2024.