Current sea water temperature:
+71.8°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 24 | 71.8°F | December 19 | 69.4°F |
| December 23 | 71.6°F | December 18 | 70.3°F |
| December 22 | 71.4°F | December 17 | 70.3°F |
| December 21 | 71.6°F | December 16 | 71.6°F |
| December 20 | 70.9°F | December 15 | 72.0°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
December
December
| 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: 01:26
December 25, thursday
0300
63°F
W
8 mph
8 mph
0600
59°F
SW
8 mph
8 mph
0900
63°F
SW
9 mph
9 mph
1200
68°F
S
7 mph
7 mph
1500
73°F
SE
9 mph
9 mph
1800
72°F
SE
12 mph
12 mph
2100
70°F
SE
12 mph
12 mph
December 26, friday
0000
68°F
S
11 mph
11 mph
