Current sea water temperature:
+77.9°F
| Minimum sea water temperature in April: | 83.8°F |
| Maximum sea water temperature in April: | 73.6°F |
| Average sea water temperature in April: | 78.1°F |
| more information | |
14 days
forecast
forecast
| Marco Island |
monthly
weather
weather
| Marco Island |
Sea water temperature for the last 10 days:
| April 28 | 77.9°F | April 23 | 76.3°F |
| April 27 | 78.3°F | April 22 | 77.5°F |
| April 26 | 77.0°F | April 21 | 78.1°F |
| April 25 | 77.2°F | April 20 | 77.2°F |
| April 24 | 76.5°F | April 19 | 76.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Marco Island?
Based on the data about daily sea water temperature for the last three years the warmest sea in Marco Island was noticed in August, July and September.
Monthly Sea Temperatures in Marco Island, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 88.7°F. The highest and lowest sea temperatures during the month were 90.0°F and 86.9°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 86.6°F. The highest and lowest sea temperatures during the month were 89.4°F and 84.7°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 86.0°F. The highest and lowest sea temperatures during the month were 88.7°F and 84.2°F.
current
weather
weather
| Marco Island |
weather in
May
May
| Marco Island |
Best time for vacation in Marco Island
Marco Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Marco Island
Local time: 10:39
April 28, tuesday
1200
90°F
SW
1 mph
1 mph
1500
88°F
E
11 mph
11 mph
1800
81°F
SE
11 mph
11 mph
2100
77°F
NE
6 mph
6 mph
April 29, wednesday
0000
75°F
NW
8 mph
8 mph
0300
75°F
W
8 mph
8 mph
0600
73°F
W
9 mph
9 mph
0900
75°F
W
9 mph
9 mph
