San Diego weather in May
San Diego in May averages 18°C (64°F) and 7 mm of rain. It is one of the driest months of the year here.
Of the twelve months in San Diego, May is the sixth warmest and the fifth driest.
- Average temp
- 18°C (64°F)
16–21°C · 60–69°F
- Rainfall
- 7 mm
Not much rain
- Sunshine
- —
- Wind
- 12 km/h
What is San Diego like in May?
Daytime
Days are mild.
Rain
Rain is usually light.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for San Diego in May?
A layer for the evening
Evenings cool off noticeably once the sun is down.
May compared with April and June
May in San Diego is 1.1°C warmer than April and 10 mm drier than it, which averages 17°C (62°F).
May in San Diego is 1.3°C cooler than June and about as wet as it, which averages 19°C (67°F).
Daylight in San Diego in May
On 15 May the sun is up for 13 hours 52 minutes in San Diego, rising about 05:49 and setting about 19:41 local time.
May ends 40 minutes longer than it begins, so the last week of the month is a different length of day from the first.
Where to stay in San Diego
Dates are a starting point for May.
Travel guides for San Diego
What to read before you book.
San Diego weather by month
TemperatureRainfall
How May compares with the rest of the year
May is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 14°C / 58°F | 50 mm |
| February | 15°C / 59°F | 56 mm |
| March | 16°C / 60°F | 37 mm |
| April | 17°C / 62°F | 17 mm |
| May | 18°C / 64°F | 7 mm |
| June | 19°C / 67°F | 1 mm |
| July | 21°C / 70°F | 2 mm |
| August | 22°C / 72°F | 0 mm |
| September | 22°C / 71°F | 3 mm |
| October | 20°C / 68°F | 13 mm |
| November | 17°C / 62°F | 20 mm |
| December | 14°C / 58°F | 42 mm |
Check another month
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FAQs about San Diego in May
May climate averages for San Diego, 1991–2020.
San Diego averages 18°C (64°F) in May, ranging from about 16°C (60°F) at night to 21°C (69°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Barely. May sees only about 7 mm, so rain is unlikely to affect your plans.
No. May averages 18°C (64°F) against 19°C (67°F) in June — 1.3°C cooler.
May is 1.1°C warmer than April, and 10 mm drier.
Yes. May falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what May is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 13 hours 52 minutes of daylight in mid-May, against 14 hours 18 minutes in June and 10 hours 1 minute in December.
On 15 May, sunrise is about 05:49 and sunset about 19:41 local time. Both shift across the month — the month ends 40 minutes longer than it starts.
