Isla Mujeres weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Good
Best time to visit: July, November – May
What is the weather like in Isla Mujeres in December?
In December, Isla Mujeres is warm: daytime highs average 26 °C, and even at night it stays warm at around 23 °C. The sea averages 27.3 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 55 mm in total. The air is often humid and muggy. All in all, December is a good month for a holiday in Isla Mujeres.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 78 | 79 | 80 |
| Day | 27° | 26° | 25° |
| Night | 24° | 23° | 22° |
| Sea | 28° | 27° | 27° |
| Sun | 6 h | 6 h | 5 h |
| Rain days | 12 | 11 | 10 |
More details for December
- Daylight
- 10 h 51 min07:16 – 18:08
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 22 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 46 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−5America/Cancun
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %47 %
- Few rainy daysweight 20 %50 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Swimwear
- Sunscreen
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Isla Mujeres in December: quick answers
Is Isla Mujeres hot in December?
Warm rather than hot: in December, daytime highs in Isla Mujeres average 26 °C and nights cool to about 23 °C.
Can you swim in Isla Mujeres in December?
Yes. In December the sea averages 27.3 °C – lovely and warm for swimming.
Does it rain much in Isla Mujeres in December?
Rain is frequent, with about 11 rainy days and 55 mm in total.
Isla Mujeres month by month
The whole year in Isla MujeresAll destinations: MexicoCaribbean weather in DecemberWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences