Measurements:
°C
°F
CURRENT WEATHER
10:29
Jacksonville
90°F
SW 10 mph
Feels like: 96°F
Precip: 4%
World Resorts USA Jacksonville Weather

7 Day Weather Forecast

09.15
tue
DAY
96°F
W 12 mph
precip
2%
NIGHT
84°F
W 9 mph
precip
5%
09.16
wed
DAY
90°F
SW 13 mph
precip
12%
NIGHT
84°F
SW 9 mph
precip
3%
09.17
thu
DAY
90°F
SW 11 mph
precip
4%
NIGHT
80°F
W 6 mph
precip
35%
09.18
fri
DAY
94°F
W 6 mph
precip
3%
NIGHT
82°F
W 6 mph
precip
20%
09.19
sat
DAY
88°F
NW 5 mph
precip
18%
NIGHT
84°F
NW 6 mph
precip
27%
09.20
sun
DAY
96°F
NW 4 mph
precip
7%
NIGHT
84°F
NW 7 mph
precip
12%
09.21
mon
DAY
96°F
N 3 mph
precip
8%
NIGHT
82°F
NW 6 mph
precip
21%

Jacksonville Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Jacksonville was 28.4°F. The maximum and minimum values were 27.1°F and 29.2°F respectively.

Jacksonville on the Weather Map

Best Time to Visit Jacksonville
The most sunny months:
May 16 days
April 16 days
March 15 days
The most warm months:
July 96.4 °F
August 95.4 °F
June 93.7 °F
Warmest sea temperature:
August 86.5 °F
September 86.0 °F
July 86.0 °F
The most cold months:
January 63.3 °F
December 68.7 °F
February 69.2 °F
The most rainy months:
August 9 days
July 8 days
June 7 days
The most windy months:
April 8 mph
March 7 mph
October 7 mph
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