Current sea water temperature:
+76.3°F
| Minimum sea water temperature in March: | 79.7°F |
| Maximum sea water temperature in March: | 66.7°F |
| Average sea water temperature in March: | 74.2°F |
| more information | |
14 days
forecast
forecast
| Marco Island |
monthly
weather
weather
| Marco Island |
Sea water temperature for the last 10 days:
| March 18 | 76.3°F | March 13 | 77.4°F |
| March 17 | 77.4°F | March 12 | 76.8°F |
| March 16 | 77.9°F | March 11 | 75.4°F |
| March 15 | 77.9°F | March 10 | 73.6°F |
| March 14 | 78.4°F | March 9 | 73.0°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
March
March
| 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: 17:35
March 18, wednesday
1800
64°F
S
21 mph
21 mph
2100
63°F
SW
20 mph
20 mph
March 19, thursday
0000
61°F
SW
17 mph
17 mph
0300
59°F
S
19 mph
19 mph
0600
59°F
S
18 mph
18 mph
0900
61°F
S
19 mph
19 mph
1200
70°F
S
17 mph
17 mph
1500
75°F
S
14 mph
14 mph
