Current sea water temperature:
+87.3°F
| Minimum sea water temperature in July: | 89.8°F |
| Maximum sea water temperature in July: | 83.7°F |
| Average sea water temperature in July: | 87.2°F |
| more information | |
14 days
forecast
forecast
| Marco Island |
monthly
weather
weather
| Marco Island |
Sea water temperature for the last 10 days:
| July 21 | 87.3°F | July 16 | 88.2°F |
| July 20 | 87.8°F | July 15 | 88.7°F |
| July 19 | 87.8°F | July 14 | 88.5°F |
| July 18 | 88.5°F | July 13 | 88.7°F |
| July 17 | 88.7°F | July 12 | 88.7°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 88.4°F. The highest and lowest sea temperatures during the month were 89.2°F and 87.3°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
July
July
| 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: 09:35
July 21, tuesday
1200
91°F
N
17 mph
17 mph
1500
93°F
N
14 mph
14 mph
1800
90°F
NE
12 mph
12 mph
2100
86°F
N
9 mph
9 mph
July 22, wednesday
0000
84°F
N
7 mph
7 mph
0300
82°F
NW
9 mph
9 mph
0600
82°F
NW
12 mph
12 mph
0900
84°F
NW
10 mph
10 mph
