Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
December verdict
Very good for holiday weather
Average highs sit around 29°C, giving warm days by monthly-average standards. Sunshine averages 6.1h per day, enough for a balanced month. Rainfall averages 92mm, so some wet days are possible.

Monthly averages
Temp
29°C
Rain
92mm
Sun
6.1h
Sea
27°C
Weather score
77
Very good
Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
Showers
Rainfall averages 92mm, so some wet days are possible.
Some sun
Sunshine averages 6.1h per day, enough for a balanced month.
Warm sea
Sea temperatures average 27°C, so swimming is usually comfortable by monthly-average standards.
Map
Compare Tulum, Quintana Roo, Mexico with nearby places by weather score, rain, sun, temperature, and swim conditions.
December29°C average high
December is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsApril to September
This stretch sets the upper range for average daytime heat.
December92mm average rain
December sits on the drier side of Tulum's year, which helps with sightseeing and transfers.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December6.1 hours average sun
December is one of Tulum's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMarch to May
This stretch has the strongest sunshine in the monthly averages.
December27°C average sea
December is below Tulum's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJune to October
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
December77 weather score
December scores above Tulum's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJanuary to April and November to December
These months have the strongest weather score in the monthly averages.