Current sea water temperature:
+71.2°F
| Minimum sea water temperature in December: | 77.4°F |
| Maximum sea water temperature in December: | 64.9°F |
| Average sea water temperature in December: | 70.8°F |
| more information | |
14 days
forecast
forecast
| Marco Island |
monthly
weather
weather
| Marco Island |
Sea water temperature for the last 10 days:
| December 31 | 71.2°F | December 26 | 70.9°F |
| December 30 | 71.4°F | December 25 | 71.1°F |
| December 29 | 70.5°F | December 24 | 71.8°F |
| December 28 | 70.7°F | December 23 | 71.6°F |
| December 27 | 70.7°F | December 22 | 71.4°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
January
January
| 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: 14:53
December 31, wednesday
1500
63°F
SE
16 mph
16 mph
1800
63°F
SE
15 mph
15 mph
2100
59°F
SE
13 mph
13 mph
January 01, thursday
0000
57°F
S
14 mph
14 mph
0300
55°F
S
11 mph
11 mph
0600
54°F
S
9 mph
9 mph
0900
55°F
SW
9 mph
9 mph
1200
63°F
S
4 mph
4 mph
