San Diego in May
The weather in May
In May, San Diego averages daytime highs of 70° and night-time lows of 58° — mild weather by day. Expect around 0.2 in of precipitation spread over about 2 wet days, with average cloud cover near 30%.
Temperatures are much the same as in April, and June is warmer again by about 1.1°. The sea averages 63°, bracing but swimmable.
May scores 96/100 — excellent conditions for sightseeing — and ranks 3rd of the twelve months for San Diego.
Around the middle of the month the sun rises at 05:51 and sets at 19:41 local time, giving 13 h 50 min of daylight. Days lengthen by 41 minutes over the month.
Why 96/100?
How the score for May is builtBeach score this month: 45/100 (adds sea temperature and heat).
Comfort peaks for daytime highs between 18° and 25°C (64–77°F).
Festivals in the region in May
- San Francisco International Film FestivalFilm festival · Apr–MaySan Francisco
- Cruel World FestivalMusic festivalPasadena
Only the month is given: the exact dates change from year to year.
Around San Diego this month
Chula Vista
United States's best in May
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San Diego in May: quick answers
Is May a good time to visit San Diego?
May scores 96/100 for San Diego, which we rate as excellent. Average highs are 70°F with 2 wet days.
How warm is San Diego in May?
Daytime highs average 70°F and night-time lows 58°F in May.
Does it rain a lot in San Diego in May?
San Diego receives about 0.2 in of precipitation in May, falling on around 2 days.
Can you swim in San Diego in May?
The sea averages 63°F in May, cold for most swimmers.