Current sea water temperature:
+87.6°F
| Minimum sea water temperature in August: | 90.5°F |
| Maximum sea water temperature in August: | 84.9°F |
| Average sea water temperature in August: | 87.5°F |
| more information | |
14 days
forecast
forecast
| Marco Island |
monthly
weather
weather
| Marco Island |
Sea water temperature for the last 10 days:
| August 12 | 87.6°F | August 7 | 87.4°F |
| August 11 | 87.6°F | August 6 | 87.4°F |
| August 10 | 87.8°F | August 5 | 87.1°F |
| August 9 | 88.0°F | August 4 | 88.0°F |
| August 8 | 86.7°F | August 3 | 87.8°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:
2026
2025
2024
The average sea water temperature in July of 2026 was 88.0°F. The highest and lowest sea temperatures during the month were 89.2°F and 86.9°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
August
August
| 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: 22:17
August 13, thursday
0000
79°F
SE
4 mph
4 mph
0300
77°F
E
3 mph
3 mph
0600
77°F
S
7 mph
7 mph
0900
84°F
SW
6 mph
6 mph
1200
86°F
E
2 mph
2 mph
1500
86°F
E
11 mph
11 mph
1800
86°F
SE
11 mph
11 mph
2100
86°F
SE
6 mph
6 mph
