Measurements:
°C
°F
Marco Island
100°F
NE 6 mph
Feels like: 114°F
Precip: 2%
World Resorts USA Marco Island Weather May Weather in Marco Island

Marco Island Weather: May

Average Day Temperature: 89.4°F
Average Night Temperature: 77.0°F
Sea Water Temperature: 86.1°F
Number of Sunny Days: 16 days
Sunshine Hours: 13.1 - 13.6 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.1 in

Air Temperature in May, °F

Select Year: 2026 2025 2024

The highest day temperature in May 2026 was 97°F. The lowest night temperature was 71°F. The average values for day and night temperatures during May were 91.5°F и 77.0°F respectivly.

Marco Island Water Sea Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Marco Island was 86.8°F. The maximum and minimum values were 82.6°F and 89.2°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Marco Island is 1.1 in.

Wind Speed in May, mph

The average wind speed in May is 8.9 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Marco Island in May is 9.5 hours.

Best Time to Visit Marco Island
The most sunny months:
March 19 days
April 18 days
May 16 days
The most warm months:
August 92.2 °F
July 92.0 °F
June 90.7 °F
Warmest sea temperature:
August 91.7 °F
July 91.2 °F
September 90.6 °F
The most cold months:
January 72.3 °F
December 75.3 °F
February 76.3 °F
The most rainy months:
June 6 days
July 5 days
September 4 days
The most windy months:
April 10 mph
November 10 mph
January 9 mph

Marco Island on the Weather Map

USA Resorts:
NAME
Boston +94
Chicago +88
Hawaii +80
Houston +90
Las Vegas +120
Los Angeles +106
Maui +76
Miami +100
Myrtle Beach +96
New York +114
San Diego +96
San Francisco +76
Santa Monica +84
Sarasota +102
Tampa +100
24 Hours Weather Forecast
Marco Island
Local time: 14:14
15 jul, wednesday
1500 100°F
NE
6 mph
1800 94°F
E
8 mph
2100 90°F
E
5 mph
16 jul, thursday
0000 88°F
S
7 mph
0300 86°F
SW
6 mph
0600 86°F
S
8 mph
0900 86°F
SW
9 mph
1200 92°F
SW
6 mph