Is San Diego hot in May?
Days are typically mild at 20.6°C, while nights average 15.5°C.
United States · 1991–2020 normal
San Diego in
May.
Typical May weather in San Diego: 20.6°C by day, 15.5°C at night, 7 mm of rain over 1.2 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high20.6°C
Typical low15.5°C
Rain7 mm
Wet days1.2
In the year-round weather comparison, May scores 88 out of 100 (October leads the year at 96). Daylight is calculated as 13 h 49 from latitude 32.72°. Open-water sea temperature is 17.3°C (11 km from the place centre).
May at a glance
What is San Diego like in May?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 7 mm across about 1 wet days.
How much daylight is there?
There are about 13 h 49 between sunrise and sunset at mid-month, calculated from the place latitude.
Is May a good time to visit?
May ranks 6 of 12 in our weather comparison; October ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5391811
- NOAA station
- USW00023188 · SAN DIEGO INTL AP
- Station distance
- 2.6 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for San Diego is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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