Current sea water temperature:
+64.2°F
| Minimum sea water temperature in May: | 67.8°F |
| Maximum sea water temperature in May: | 59.2°F |
| Average sea water temperature in May: | 63.5°F |
| more information | |
14 days
forecast
forecast
| San Diego |
monthly
weather
weather
| San Diego |
Sea water temperature for the last 10 days:
| May 16 | 64.2°F | May 11 | 64.8°F |
| May 15 | 64.0°F | May 10 | 64.2°F |
| May 14 | 64.0°F | May 9 | 63.9°F |
| May 13 | 64.6°F | May 8 | 63.1°F |
| May 12 | 64.0°F | May 7 | 62.6°F |
Monthly sea water temperature, °F
When is the warmest sea in San Diego?
Based on the data about daily sea water temperature for the last three years the warmest sea in San Diego was noticed in August, September and July.
Monthly Sea Temperatures in San Diego, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 68.9°F. The highest and lowest sea temperatures during the month were 72.3°F and 63.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 67.3°F. The highest and lowest sea temperatures during the month were 70.5°F and 63.1°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 66.0°F. The highest and lowest sea temperatures during the month were 69.3°F and 63.1°F.
current
weather
weather
| San Diego |
weather in
May
May
| San Diego |
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: 15:43
May 16, saturday
1800
64°F
NE
9 mph
9 mph
2100
63°F
NE
8 mph
8 mph
May 17, sunday
0000
61°F
N
10 mph
10 mph
0300
61°F
N
12 mph
12 mph
0600
61°F
N
13 mph
13 mph
0900
63°F
N
15 mph
15 mph
1200
64°F
N
16 mph
16 mph
1500
64°F
N
16 mph
16 mph
