17.09
thu
thu
Day
95°F
W 16 mph
Precip.
8%
8%
Night
81°F
W 11 mph
Precip.
18%
18%
18.09
fri
fri
Day
95°F
W 12 mph
Precip.
5%
5%
Night
82°F
W 7 mph
Precip.
8%
8%
19.09
sat
sat
Day
84°F
E 11 mph
Precip.
11%
11%
Night
79°F
S 2 mph
Precip.
27%
27%
20.09
sun
sun
Day
86°F
E 7 mph
Precip.
36%
36%
Night
79°F
SW 4 mph
Precip.
85%
85%
21.09
mon
mon
Day
79°F
E 10 mph
Precip.
62%
62%
Night
77°F
W 2 mph
Precip.
70%
70%
22.09
tue
tue
Day
84°F
NE 9 mph
Precip.
14%
14%
Night
79°F
N 9 mph
Precip.
58%
58%
23.09
wed
wed
Day
82°F
NE 9 mph
Precip.
39%
39%
Night
79°F
N 6 mph
Precip.
42%
42%
24.09
thu
thu
Day
84°F
N 9 mph
Precip.
17%
17%
Night
79°F
NW 16 mph
Precip.
65%
65%
25.09
fri
fri
Day
79°F
N 20 mph
Precip.
71%
71%
Night
77°F
N 9 mph
Precip.
86%
86%
26.09
sat
sat
Day
79°F
N 10 mph
Precip.
73%
73%
Night
79°F
N 8 mph
Precip.
66%
66%
27.09
sun
sun
Day
81°F
N 12 mph
Precip.
82%
82%
Night
79°F
N 9 mph
Precip.
86%
86%
28.09
mon
mon
Day
79°F
N 15 mph
Precip.
75%
75%
Night
77°F
N 17 mph
Precip.
62%
62%
29.09
tue
tue
Day
77°F
N 16 mph
Precip.
84%
84%
Night
77°F
NW 11 mph
Precip.
54%
54%
30.09
wed
wed
Day
79°F
NW 11 mph
Precip.
30%
30%
Night
75°F
N 14 mph
Precip.
86%
86%
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 September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 85.4°F. The highest and lowest sea temperatures during the month were 86.2°F and 84.6°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 84.4°F. The highest and lowest sea temperatures during the month were 85.3°F and 83.8°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 Nicaragua:
Name
°F
24 Hours Forecast
San Diego
Local time: 07:19
September 17, thursday
0900
88°F
W
19 mph
19 mph
1200
95°F
W
16 mph
16 mph
1500
93°F
W
17 mph
17 mph
1800
86°F
W
14 mph
14 mph
2100
82°F
W
12 mph
12 mph
September 18, friday
0000
81°F
W
11 mph
11 mph
0300
81°F
W
9 mph
9 mph
0600
79°F
W
7 mph
7 mph
