December · Mexico
Best time to visit Isla Mujeres in December Weather, crowds & prices
Weather in Isla Mujeres in December
Average temperature 25°C, 109 mm of rain, about 10 days with 6+ hours of sunshine and 81% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
6.5/10
Ranked #12 of 12 months
- Avg temp
- 25°C
- Rainfall
- 109 mm
- Humidity
- 81%
- Days with 6h+ sun
- 10
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
December in Isla Mujeres scores 6.5/10 for beach and coastal travel - ranked #12 of 12. Expect around 25°C, 109 mm of rain, and roughly 10 days with 6+ hours of sunshine this month.
Isla Mujeres lies off Cancún with a breezy beach, a turtle farm and calm Caribbean water.
December in Isla Mujeres — workable with trade-offs
With 25°C (77°F) on average, December delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
109 mm of rain signals a properly wet month, with only about 10 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 6.5/10 on the same scale — 12th of 12 months, versus 9.6/10 for the best month here.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, April is materially better in Isla Mujeres — 3.1 points higher on the same scale.
Frequently asked
- What is the weather like in Isla Mujeres in December?
- In December, Isla Mujeres averages 25°C, 109 mm of rain, and about 10 days with 6+ hours of sunshine. Its climate-comfort score is 6.5/10.
- Is December a good time to visit Isla Mujeres?
- December earns a 6.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Isla Mujeres in December?
- Expect about 109 mm of rain in December. Average humidity is 81% and there are about 10 days with 6+ hours of sunshine.
Curated in Isla Mujeres
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Isla Mujeres, Mexico. Live activities and tours from GetYourGuide, matched to this destination.