Measurements:
°C
°F
CURRENT WEATHER
11:10
Marco Island
90°F
NW 7 mph
Feels like: 98°F
Precip: 5%
World Resorts USA Marco Island Weather

7 Day Weather Forecast

09.15
tue
DAY
90°F
NW 7 mph
precip
5%
NIGHT
86°F
W 11 mph
precip
8%
09.16
wed
DAY
92°F
SW 11 mph
precip
6%
NIGHT
84°F
SW 17 mph
precip
11%
09.17
thu
DAY
92°F
SW 12 mph
precip
3%
NIGHT
82°F
SW 15 mph
precip
9%
09.18
fri
DAY
90°F
W 7 mph
precip
4%
NIGHT
82°F
W 8 mph
precip
11%
09.19
sat
DAY
88°F
W 3 mph
precip
5%
NIGHT
84°F
SW 9 mph
precip
66%
09.20
sun
DAY
90°F
N 6 mph
precip
5%
NIGHT
88°F
NE 2 mph
precip
11%
09.21
mon
DAY
90°F
NE 5 mph
precip
7%
NIGHT
88°F
E 4 mph
precip
7%

Marco Island Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Marco Island was 31.2°F. The maximum and minimum values were 30.8°F and 31.6°F respectively.

Marco Island on the Weather Map

Best Time to Visit Marco Island
The most sunny months:
March 19 days
April 18 days
May 16 days
The most warm months:
August 92.7 °F
July 92.4 °F
June 90.7 °F
Warmest sea temperature:
August 91.8 °F
July 91.4 °F
September 90.6 °F
The most cold months:
January 72.3 °F
December 75.3 °F
February 76.3 °F
The most rainy months:
June 6 days
July 4 days
September 4 days
The most windy months:
April 10 mph
November 10 mph
January 9 mph
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