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San Diego weather in May 2021
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- 2121°C max day temperature
- 22 days with some rainfall
- 1313°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 55 mm of monthly rainfall
- 99 (Very High) UV index
- 1717°C sea temperature
The May weather guide for San Diego, California shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
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How hot is it in San Diego in May?
Daytime temperatures usually reach 21°C in San Diego in May, falling to 13°C at night.
How sunny is it in San Diego in May?
There are normally 8 hours of bright sunshine each day in San Diego in May - that's 61% of daylight hours.
How warm is the sea around San Diego in May?
The average sea temperature around San Diego in May is 17°C.
Does it ever rain in San Diego in May?
There are usually 2 days with some rain in San Diego in May and the average monthly rainfall is 5mm.
San Diego sunrise & sunset times for May 2021
Browse the sunrise & sunset times for San Diego in May 2021. Select a month to view San Diego sunrise & sunset times for the next twelve months.
|Date||Sunrise times||Sunset times|
|Saturday, 1st May 2021||06:01||19:31|
|Sunday, 16th May 2021||05:49||19:42|
|Monday, 31st May 2021||05:42||19:51|
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Metric (°C / mm) | Imperial (°F / inches)
Discover more about California
Where is hot in California in May for 2021/2022?
Below are average maximum temperatures at popular destinations in California in May. Select a destination to see more weather parameters.
- Death Valley
- Beverly Hills
- Los Angeles
- Palm Springs
- Santa Monica
- San Diego
- Santa Barbara
- Big Sur
- San Francisco
- Lake Tahoe
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