Marco Island climate — normals and trends
Marco Island (United States) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 23.8 °C and it receives 908 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (27.7 °C on average) and the coldest is January (18.8 °C). Rainfall peaks in September.
Marco Island averages 0 frost days, 74 hot days (≥ 30 °C) and 134 rainy days per year.
Marco Island has warmed by +0.9 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 34.9 °C (on 19 August 2007) and the coldest 1.3 °C (on 13 December 1962).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Marco IslandFlorida
- coords
- 25.94°, -81.72°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.8°C
Average daily high
26.7°C
Average daily low
21.3°C
Annual rainfall
908mm
Sunshine / day
10.8h
Mean relative humidity
76%
Average peak wind
19.7km/h
Seasonal range
8.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
74 d/yr
Rainy days (≥ 1 mm)
134 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.6 °C
Average feels-like low
22.6 °C
Average peak gust
32.8 km/h
Tropical nights (≥ 20 °C)
243 d/yr
Solar radiation
19.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.27 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
34.9 °C
19 August 2007
Coldest day
1.3 °C
13 December 1962
Wettest day
220 mm
12 June 2024
Windiest day
99.4 km/h
24 October 2005
Strongest gust
184.7 km/h
10 September 2017
Hottest feels-like
41.6 °C
21 July 2025
Coldest feels-like
-5.8 °C
24 December 1989
Snowiest day
0.1 cm
24 December 1989
Sunniest day
13.0 h
5 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 20.3 °C | -1.7 °C | 23 mm | -13 mm |
| Feb | 24.6 °C | +2.0 °C | 8 mm | -26 mm |
| Mar | 24.6 °C | +0.3 °C | 19 mm | -23 mm |
| Apr | 27.5 °C | +1.0 °C | 13 mm | -25 mm |
| May | 29.7 °C | +1.1 °C | 75 mm | +8 mm |
| Jun | 30.3 °C | +0.7 °C | 149 mm | +0 mm |
| Jul | 30.6 °C | +0.5 °C | 144 mm | +21 mm |
| Aug | 30.9 °C | +0.6 °C | 204 mm | +73 mm |
| Sep | 29.9 °C | +0.2 °C | 122 mm | -28 mm |
| Oct | 28.9 °C | +0.7 °C | 58 mm | -18 mm |
| Nov | 25.9 °C | +0.4 °C | 4 mm | -27 mm |
| Dec | 24.4 °C | +1.1 °C | 20 mm | -11 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Marco Island?
Marco Island has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 23.8 °C and it receives 908 mm of precipitation per year.
What is the hottest day ever recorded in Marco Island?
The hottest day measured in Marco Island between 1940 and 2025 was 19 August 2007, reaching 34.9 °C.
What is the coldest day in Marco Island?
The coldest day measured in Marco Island between 1940 and 2025 was 13 December 1962, at 1.3 °C.
Does it snow in Marco Island?
Almost never: Marco Island sees virtually no snow, with about 0 frost days per year.
Has the climate of Marco Island warmed?
Yes: Marco Island warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Marco Island?
The wettest day measured in Marco Island between 1940 and 2025 was 12 June 2024, with 220 mm of rain in 24 hours.
What was the windiest day in Marco Island?
The windiest day measured in Marco Island between 1940 and 2025 was 24 October 2005, with winds reaching 99.4 km/h.
What is the warmest month in Marco Island?
The warmest month in Marco Island is August (27.7 °C on average); the coldest is January (18.8 °C).
How much does it rain in Marco Island?
Marco Island receives on average 908 mm of precipitation per year, spread over about 134 rainy days.
Is it sunny in Marco Island?
Marco Island gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
What is the biggest single-day snowfall in Marco Island?
The heaviest 24-hour snowfall measured in Marco Island between 1940 and 2025 was 24 December 1989, with 0.1 cm.
Are there tropical nights in Marco Island?
Yes: Marco Island has on average 243 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Marco Island?
In Marco Island, between 1940 and 2025, the highest apparent temperature reached 41.6 °C on 21 July 2025, and the lowest was -5.8 °C on 24 December 1989.
Compare Marco Island with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Marco Island