23.09
wed
wed
Day
86°F
SW 11 mph
Precip.
30%
30%
Night
79°F
SW 9 mph
Precip.
23%
23%
24.09
thu
thu
Day
82°F
SW 12 mph
Precip.
8%
8%
Night
70°F
S 9 mph
Precip.
16%
16%
25.09
fri
fri
Day
77°F
S 8 mph
Precip.
1%
1%
Night
72°F
SW 3 mph
Precip.
3%
3%
26.09
sat
sat
Day
82°F
S 4 mph
Precip.
0%
0%
Night
73°F
N 5 mph
Precip.
9%
9%
27.09
sun
sun
Day
82°F
NE 6 mph
Precip.
10%
10%
Night
79°F
NE 4 mph
Precip.
4%
4%
28.09
mon
mon
Day
84°F
E 6 mph
Precip.
12%
12%
Night
77°F
NW 3 mph
Precip.
9%
9%
29.09
tue
tue
Day
88°F
NW 4 mph
Precip.
3%
3%
Night
77°F
NW 6 mph
Precip.
10%
10%
sea water
temperature
temperature
| Jacksonville |
monthly
weather
weather
| Jacksonville |
current
weather
weather
| Jacksonville |
14 days
forecast
forecast
| Jacksonville |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 83.4°F. The highest and lowest sea temperatures during the month were 84.7°F and 80.8°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 75.9°F. The highest and lowest sea temperatures during the month were 80.4°F and 71.6°F.
Air temperature in Jacksonville, °F
Precipitation total in Jacksonville, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Jacksonville
Jacksonville on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Jacksonville
Local time: 02:00
September 23, wednesday
0300
77°F
SW
2 mph
2 mph
0600
75°F
S
4 mph
4 mph
0900
77°F
S
7 mph
7 mph
1200
86°F
SW
11 mph
11 mph
1500
82°F
SW
12 mph
12 mph
1800
82°F
SW
12 mph
12 mph
2100
79°F
SW
11 mph
11 mph
September 24, thursday
0000
79°F
SW
9 mph
9 mph
