World Resorts USA Marco Island Weather

Marco Island sea water temperature

Current sea water temperature:
+84.6°F
Minimum sea water temperature in October: 87.1°F
Maximum sea water temperature in October: 75.7°F
Average sea water temperature in October: 81.9°F

Sea water temperature for the last 10 days:

October 14 84.6°F October 9 83.8°F
October 13 84.6°F October 8 83.7°F
October 12 85.1°F October 7 83.7°F
October 11 84.6°F October 6 83.5°F
October 10 84.0°F October 5 82.8°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:
2026
2025
2024

The average sea water temperature in August of 2026 was 88.5°F. The highest and lowest sea temperatures during the month were 90.0°F and 86.7°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:
2026
2025
2024

The average sea water temperature in September of 2026 was 87.1°F. The highest and lowest sea temperatures during the month were 88.9°F and 84.2°F.

Best time for vacation in Marco Island

Sunniest months:
March 19 days
April 18 days
May 16 days
Warmest months:
August 88.4 °F
July 88.1 °F
June 86.6 °F
Warmest sea temp:
August 87.7 °F
July 87.2 °F
September 86.6 °F
Coldest months:
January 70.0 °F
December 72.8 °F
February 73.7 °F
Rainiest months:
June 6 days
July 4 days
September 4 days
Windiest months:
April 10.1 mph
November 10.0 mph
January 9.9 mph

Marco Island on a weather map

Marco Island
+77°F
SW 11 mph
Feels like: +81°F
Precip.: 7%
Places in USA:
Name
°F
+64°F
+70°F
+75°F
+52°F
+68°F
+82°F
+64°F
+72°F
+70°F
+68°F
+57°F
+64°F
+77°F
+77°F
+63°F
24 Hours Forecast
Marco Island
Local time: 08:12
October 14, wednesday
0900
77°F
SW
11 mph
1200
84°F
W
8 mph
1500
86°F
E
2 mph
1800
86°F
SW
9 mph
2100
82°F
SW
12 mph
October 15, thursday
0000
81°F
W
12 mph
0300
79°F
W
11 mph
0600
77°F
W
11 mph
Units of measurement: °C / °F