17.05
sun
sun
Day
66°F
N 14 mph
Precip.
0%
0%
Night
61°F
N 9 mph
Precip.
82%
82%
18.05
mon
mon
Day
66°F
NE 10 mph
Precip.
0%
0%
Night
63°F
NE 2 mph
Precip.
0%
0%
19.05
tue
tue
Day
68°F
E 9 mph
Precip.
0%
0%
Night
64°F
SE 3 mph
Precip.
0%
0%
20.05
wed
wed
Day
70°F
E 10 mph
Precip.
0%
0%
Night
64°F
NE 4 mph
Precip.
0%
0%
21.05
thu
thu
Day
70°F
E 8 mph
Precip.
0%
0%
Night
64°F
NE 4 mph
Precip.
0%
0%
22.05
fri
fri
Day
70°F
NE 8 mph
Precip.
0%
0%
Night
64°F
E 4 mph
Precip.
0%
0%
23.05
sat
sat
Day
68°F
E 8 mph
Precip.
0%
0%
Night
64°F
E 4 mph
Precip.
0%
0%
24.05
sun
sun
Day
70°F
E 9 mph
Precip.
0%
0%
Night
64°F
E 4 mph
Precip.
0%
0%
25.05
mon
mon
Day
70°F
E 9 mph
Precip.
0%
0%
Night
64°F
E 6 mph
Precip.
0%
0%
26.05
tue
tue
Day
68°F
E 9 mph
Precip.
0%
0%
Night
63°F
E 4 mph
Precip.
0%
0%
27.05
wed
wed
Day
66°F
E 9 mph
Precip.
0%
0%
Night
63°F
SE 5 mph
Precip.
0%
0%
28.05
thu
thu
Day
68°F
SE 7 mph
Precip.
0%
0%
Night
64°F
E 5 mph
Precip.
0%
0%
29.05
fri
fri
Day
72°F
E 8 mph
Precip.
0%
0%
Night
68°F
SE 6 mph
Precip.
0%
0%
30.05
sat
sat
Day
72°F
SE 11 mph
Precip.
0%
0%
Night
68°F
SE 8 mph
Precip.
0%
0%
sea water
temperature
temperature
| San Diego |
monthly
weather
weather
| San Diego |
current
weather
weather
| San Diego |
7 days
forecast
forecast
| San Diego |
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 63.5°F. The highest and lowest sea temperatures during the month were 64.8°F and 62.2°F.
Air temperature in San Diego, °F
Precipitation total in San Diego, in.
* Charts above show average data for the last 3 years.
Best time for vacation in San Diego
San Diego on a weather map
Places in USA:
Name
°F
24 Hours Forecast
San Diego
Local time: 12:13
May 17, sunday
1500
66°F
NE
15 mph
15 mph
1800
63°F
NE
12 mph
12 mph
2100
61°F
NE
11 mph
11 mph
May 18, monday
0000
61°F
N
9 mph
9 mph
0300
61°F
N
11 mph
11 mph
0600
61°F
N
7 mph
7 mph
0900
64°F
N
5 mph
5 mph
1200
66°F
NE
10 mph
10 mph
