Isla Mujeres weather in December

In December, Isla Mujeres sees average daytime highs of 26°C and overnight lows near 24°C, with 62 mm of rain across 11.8 wet days and about 10.7 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 51% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 10 h 48 min at the start of December to 10 h 42 min by month's end. Set against the rest of the year, December is Isla Mujeres's 5th-clearest and 6th-windiest month. For the whole year in context, see Isla Mujeres's year-round climate.

Daytime high
26°
9th warmest
Overnight low
24°
3rd coldest
Rainfall
62 mm
11.8 wet days
Daylight
10 h 42 min
6:22 AM – 5:05 PM
Cloud cover
45%
5th clearest
Wind
23 km/h
6th windiest
Solar energy
3.7 kWh/m²
Travel score
6.7
out of 10

Isla Mujeres is municipal seat of Isla Mujeres, State of Quintana Roo, Mexico.

Founded
1850

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical December day in Isla Mujeres reaches about 26°C in the afternoon and slips back to 24°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 27°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12625
22625
32625
42625
52625
62625
72625
82624
92624
102624
112624
122624
132624
142624
152624
162624
172624
182624
192624
202624
212624
222624
232524
242524
252524
262524
272524
282524
292524
302524
312524

How December really feels in Isla Mujeres

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

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
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.

Isla Mujeres weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 24°6510.110.97.1
Feb25° / 24°356.911.37.6
Mar26° / 24°244.911.88.0
Apr26° / 25°254.712.57.9
May27° / 26°669.1136.9
Jun28° / 27°13115.613.35.5
Jul28° / 27°6611.213.25.8
Aug29° / 27°9114.612.75.3
Sep28° / 27°1642012.14.5
Oct28° / 26°1901911.55.1
Nov27° / 25°9011.6116.5
Dec26° / 24°6211.810.76.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17426
27426
37525
47525
57525
67525
77426
87426
97327
107228
117129
127030
136931
146832
156733
166733
176634
186634
196634
206634
216634
226634
236733
246832
256832
266832
276931
287030
297030
307030
317030

Chance of precipitation in December

Any precipitation

Isla Mujeres gets around 62 mm of rain over 11.8 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 38% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
237
337
437
538
638
738
838
938
1039
1139
1239
1340
1440
1540
1641
1741
1841
1941
2041
2140
2240
2339
2438
2538
2637
2736
2836
2935
3035
3134

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 43% of days. Sticky, muggy-or-worse air turns up on roughly 73% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1061433453
2061432453
3071432453
4071331453
5071330463
6081329463
7081429463
8091428473
9091427473
100101426473
111101525482
121101524482
131101624482
141111623472
151111723472
161111723462
171111823452
181111824442
191111925432
201111926421
211111927411
221111928401
231111929391
241111930391
251111931381
261111831381
271111832381
281111732371
292111733371
302111733371
312121633361

Wind in December

Winds average 23 km/h in December.

Across December, daily wind ranges from about 22 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
123breezy
223breezy
323breezy
422breezy
522breezy
622breezy
722breezy
822breezy
922breezy
1022breezy
1122breezy
1222breezy
1322breezy
1423breezy
1523breezy
1623breezy
1723breezy
1823breezy
1923breezy
2023breezy
2123breezy
2223breezy
2323breezy
2423breezy
2523breezy
2623breezy
2723breezy
2823breezy
2923breezy
3023breezy
3123breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 48 min at the start of December to 10 h 42 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 6:13 AM to 6:28 AM, and sunset from 5:01 PM to 5:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:135:01
210.86:135:01
310.86:145:01
410.86:155:01
510.86:155:01
610.86:165:02
710.86:165:02
810.76:175:02
910.76:185:02
1010.76:185:03
1110.76:195:03
1210.76:195:03
1310.76:205:03
1410.76:215:04
1510.76:215:04
1610.76:225:05
1710.76:225:05
1810.76:235:05
1910.76:235:06
2010.76:245:06
2110.76:245:07
2210.76:255:07
2310.76:255:08
2410.76:265:08
2510.76:265:09
2610.76:265:09
2710.76:275:10
2810.76:275:10
2910.76:285:11
3010.76:285:11
3110.76:285:12

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.7 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.7 kWh/m² to a high of 6.59 kWh/m² in July across the year — December's 3.7 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.7Moderate
103.7Moderate
113.7Moderate
123.7Moderate
133.7Moderate
143.6Moderate
153.6Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.7Moderate
283.7Moderate
293.7Moderate
303.7Moderate
313.7Moderate
Planning a trip in December

Hazard calendar for Isla Mujeres

In seasonPeak

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

Isla Mujeres sits in the Atlantic hurricane belt; the season peaks August–October.

Isla Mujeres's rainy season runs August–November, 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 Isla Mujeres?

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

6.7
Sightseeing
6th-best month of the year
6.3
Beach & pool
9th-best month of the year

December is a reasonable time to visit Isla Mujeres for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Isla Mujeres in December

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

In December, Isla Mujeres sees daytime highs around 26°C and nights near 24°C. Worth packing: light clothes, rain gear and a windbreaker. About 12 days see rain.

light clothesrain geara windbreaker

Sea temperature near Isla Mujeres in December

The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in September at about 29°C and coldest in February near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb26Warm
Mar26Warm
Apr27Warm
May28Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Isla Mujeres in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Isla Mujeres peaks around July 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighJul 19UV 12Dec 16UV 6
UV index (midday)Level
Jan7High
Feb9Very high
Mar11Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct10Very high
Nov7High
Dec6High

Air quality in Isla Mujeres 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 Isla Mujeres is worst in June — around 25 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (November, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2024 µg/m³Nov 226 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar8Good
Apr12Good
May15Moderate
Jun25Moderate
Jul22Moderate
Aug18Moderate
Sep12Moderate
Oct9Good
Nov6Good
Dec6Good
Location & terrain

Where is Isla Mujeres?

Isla Mujeres sits at 21.2°N, 86.7°W, 0 m above sea level, in Mexico. The nearest listed city is Cancun, 14 km away.

Chichen ItzaFelipe Carrillo Puerto

Topography around Isla Mujeres

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Isla Mujeres.

Within 3 km, the terrain around Isla Mujeres has only modest variations in elevation — a maximum elevation change of 23 m around an average of 1 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 30 m; within 80 km, only modest variations in elevation — a maximum elevation change of 30 m.

The land around Isla Mujeres is covered by water (90%) within 3 km, water (84%) within 16 km, and water (58%) and trees (35%) within 80 km.

3 km
23 m
16 km
30 m
80 km
30 m
treesgrasslandartificial surfaceswaterwetlandmangroves
December weather nearby: Cancun 14 km · Playa del Carmen 76 km · Cozumel 84 km · Tulum 137 km · Tizimín 148 km · Valladolid 164 km · Chichen Itza 201 km · Felipe Carrillo Puerto 229 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

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 Isla Mujeres (21.2311°, -86.731°, elevation 0 m), 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).