December · Mexico
Best time to visit Sumidero Canyon in December Weather, crowds & prices
Weather in Sumidero Canyon in December
Average temperature 19°C, 102 mm of rain, about 15 days with 6+ hours of sunshine and 87% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
7.0/10
Ranked #5 of 12 months
- Avg temp
- 19°C
- Rainfall
- 102 mm
- Humidity
- 87%
- Days with 6h+ sun
- 15
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
December in Sumidero Canyon scores 7.0/10 for nature and wildlife travel - an above-average month (#5 of 12). Expect around 19°C, 102 mm of rain, and roughly 15 days with 6+ hours of sunshine this month.
Sumidero Canyon cuts sheer cliffs above the Grijalva-boat rides past waterfalls and canyon walls. Best window: the drier months outside peak monsoon.
December in Sumidero Canyon — reliably good (5th best month)
Temperatures hover around 19°C (65°F) — the kind of month where neither heat nor cold forces the schedule.
102 mm of rain signals a properly wet month, with only about 15 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 7/10 on the same scale — 5th of 12 months, versus 9.2/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella, footwear you can get muddy.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, March is materially better in Sumidero Canyon — 2.2 points higher on the same scale.
Frequently asked
- What is the weather like in Sumidero Canyon in December?
- In December, Sumidero Canyon averages 19°C, 102 mm of rain, and about 15 days with 6+ hours of sunshine. Its climate-comfort score is 7.0/10.
- Is December a good time to visit Sumidero Canyon?
- December earns a 7.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Sumidero Canyon in December?
- Expect about 102 mm of rain in December. Average humidity is 87% and there are about 15 days with 6+ hours of sunshine.
Curated in Sumidero Canyon
Tickets & experiences
Things to do in Sumidero Canyon
Sumidero Canyon, Mexico. Live activities and tours from GetYourGuide, matched to this destination.