Marco Island weather in December

In December, Marco Island sees average daytime highs of 74°F and overnight lows near 64°F, with 1.1 in of rain across 4 wet days and about 10.4 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 76°F in the first days to 73°F by the end. The sky is clear or mostly clear about 49% of the time in December, and the air most often feels muggy.

Daylight stretches from about 10 h 30 min at the start of December to 10 h 24 min by month's end. Set against the rest of the year, December is Marco Island's 6th-clearest and 5th-windiest month. For the whole year in context, see Marco Island's year-round climate.

Daytime high
74°
10th warmest
Overnight low
64°
3rd coldest
Rainfall
1.1 in
4 wet days
Daylight
10 h 24 min
7:11 AM – 5:35 PM
Cloud cover
45%
6th clearest
Wind
9 mph
5th windiest
Solar energy
3.55 kWh/m²
Travel score
8.1
out of 10

Marco Island is city in Collier County, Florida, United States.

Founded
1886

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 76°F in the first days to 73°F by the end.

A typical December day in Marco Island reaches about 74°F in the afternoon and slips back to 64°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 67°F and 79°F. Set against its neighbours, December runs about 4°F cooler than November and about 3°F warmer than January.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17665
27665
37665
47665
57665
67565
77565
87564
97564
107564
117564
127564
137464
147464
157464
167463
177463
187463
197463
207463
217363
227363
237363
247363
257362
267362
277362
287362
297362
307362
317362

How December really feels in Marco Island

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Marco Island weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan72° / 61°1.5510.67.7
Feb73° / 62°1.13.911.18.1
Mar76° / 65°1.34.211.88.2
Apr80° / 69°1.65.512.67.6
May84° / 74°2.79.113.36.0
Jun86° / 78°5.919.413.64.0
Jul87° / 79°5.020.813.53.6
Aug87° / 79°5.521.612.93.5
Sep86° / 78°5.919.712.23.9
Oct83° / 74°3.19.111.46.1
Nov78° / 68°1.33.810.78.0
Dec74° / 64°1.1410.48.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27327
37327
47327
57327
67327
77228
87228
97129
107030
116931
126832
136634
146634
156535
166436
176337
186238
196238
206139
216238
226238
236238
246238
256238
266238
276238
286238
296238
306436
316436

Chance of precipitation in December

Any precipitation

Marco Island gets around 1.1 in of rain over 4 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 13% and peaks near 15% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
112
212
312
412
512
612
713
813
913
1013
1113
1213
1313
1413
1514
1614
1714
1814
1914
2014
2114
2214
2314
2414
2514
2614
2714
2815
2915
3015
3115

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the muggy band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11816282810
21816272910
31816272910
41916263010
51916253010
62016243110
72015243110
82015233210
9211622329
10211622329
11221621329
12231621329
13231620328
14241720328
15251719318
16251719318
17261819308
18261819307
19271819297
20271819297
21271820287
22271820287
23281820286
24281821286
25271721286
26271721286
27271622286
28281622286
29281522296
30281522296
31291422286

Wind in December

Winds average 9 mph in December.

Across December, daily wind ranges from about 9 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 30 min at the start of December to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:02 AM to 7:18 AM, and sunset from 5:31 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.57:025:31
210.57:025:32
310.57:035:32
410.57:045:32
510.57:055:32
610.47:055:32
710.47:065:32
810.47:075:32
910.47:075:33
1010.47:085:33
1110.47:085:33
1210.47:095:33
1310.47:105:34
1410.47:105:34
1510.47:115:34
1610.47:115:35
1710.47:125:35
1810.47:135:35
1910.47:135:36
2010.47:145:36
2110.47:145:37
2210.47:155:37
2310.47:155:38
2410.47:155:38
2510.47:165:39
2610.47:165:39
2710.47:175:40
2810.47:175:40
2910.47:175:41
3010.47:185:41
3110.47:185:42

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.55 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.55 kWh/m² to a high of 6.75 kWh/m² in May across the year — December's 3.55 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.7Moderate
43.7Moderate
53.7Moderate
63.6Moderate
73.6Moderate
83.6Moderate
93.6Moderate
103.6Moderate
113.6Moderate
123.5Moderate
133.5Moderate
143.5Moderate
153.5Moderate
163.5Moderate
173.5Moderate
183.5Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.6Moderate
Planning a trip in December

Hazard calendar for Marco Island

In seasonPeak

None of Marco Island's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Marco Island sits in the Atlantic hurricane belt; the season peaks August–October.

Marco Island's rainy season runs May–October, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Marco Island?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.1
Sightseeing
2nd-best month of the year
6.5
Beach & pool
6th-best month of the year

December is one of the better times to visit Marco Island for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Marco Island in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Marco Island sees daytime highs around 74°F and nights near 64°F. Worth packing: light clothes. About 4 days see rain.

light clothes

Sea temperature near Marco Island in December

The nearest coast averages about 72°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 86°F and coldest in January near 69°F.

The water stays above 68°F all year — warm enough for a swim any month.

70°80°90°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan69Refreshing
Feb69Refreshing
Mar72Refreshing
Apr76Warm
May81Warm
Jun84Tropical
Jul86Tropical
Aug86Tropical
Sep85Tropical
Oct82Warm
Nov76Warm
Dec72Refreshing

UV index in Marco Island in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Marco Island peaks around July 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 17UV 12Dec 18UV 5
UV index (midday)Level
Jan5High
Feb7Very high
Mar9Very high
Apr10Very high
May10Extreme
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep10Very high
Oct8Very high
Nov6High
Dec5Moderate

Air quality in Marco Island in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Marco Island is worst in July — around 20 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1819 µg/m³Dec 147 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar12Good
Apr10Good
May11Good
Jun15Moderate
Jul20Moderate
Aug17Moderate
Sep12Moderate
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Marco Island?

Marco Island sits at 25.9°N, 81.7°W, 3 ft above sea level, in United States. The nearest listed city is East Naples, 14 mi away.

Topography around Marco Island

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Marco Island.

Within 2 miles, the terrain around Marco Island has only modest variations in elevation — a maximum elevation change of 43 ft around an average of 7 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 62 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 98 ft.

The land around Marco Island is covered by water (44%) and artificial surfaces (42%) within 2 miles, water (64%) and mangroves (20%) within 10 miles, and water (44%) and trees (21%) within 50 miles.

2 miles
43 ft
10 miles
62 ft
50 miles
98 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: East Naples 14 mi · Naples 15 mi · Golden Gate 17 mi · Bonita Springs 28 mi · Estero 35 mi · San Carlos Park 37 mi · Immokalee 38 mi · Iona 43 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Marco Island (25.9412°, -81.7184°, elevation 3 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).