19.09
sat
sat
Day
82°F
SW 9 mph
Precip.
17%
17%
Night
81°F
W 9 mph
Precip.
21%
21%
20.09
sun
sun
Day
81°F
W 5 mph
Precip.
29%
29%
Night
81°F
NW 10 mph
Precip.
26%
26%
21.09
mon
mon
Day
82°F
SW 3 mph
Precip.
17%
17%
Night
81°F
NW 7 mph
Precip.
24%
24%
22.09
tue
tue
Day
84°F
W 5 mph
Precip.
15%
15%
Night
81°F
N 3 mph
Precip.
10%
10%
23.09
wed
wed
Day
82°F
SW 8 mph
Precip.
7%
7%
Night
81°F
W 6 mph
Precip.
37%
37%
24.09
thu
thu
Day
82°F
SW 10 mph
Precip.
36%
36%
Night
79°F
SW 11 mph
Precip.
52%
52%
25.09
fri
fri
Day
82°F
SW 8 mph
Precip.
13%
13%
Night
79°F
W 11 mph
Precip.
61%
61%
sea water
temperature
temperature
| St. Augustine |
monthly
weather
weather
| St. Augustine |
current
weather
weather
| St. Augustine |
14 days
forecast
forecast
| St. Augustine |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 83.2°F. The highest and lowest sea temperatures during the month were 84.4°F and 81.0°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 77.1°F. The highest and lowest sea temperatures during the month were 81.5°F and 73.2°F.
Air temperature in St. Augustine, °F
Precipitation total in St. Augustine, in.
* Charts above show average data for the last 3 years.
Best time for vacation in St. Augustine
St. Augustine on a weather map
Places in USA:
Name
°F
24 Hours Forecast
St. Augustine
Local time: 06:07
September 19, saturday
0900
81°F
SW
8 mph
8 mph
1200
82°F
SW
9 mph
9 mph
1500
82°F
W
9 mph
9 mph
1800
81°F
W
9 mph
9 mph
2100
81°F
W
9 mph
9 mph
September 20, sunday
0000
81°F
W
9 mph
9 mph
0300
79°F
W
7 mph
7 mph
0600
79°F
W
6 mph
6 mph
