I've been to Tulum in December, right after the holidays. For someone who isn't a huge fan of people, this was a mistake. The beach road was so crowded, it felt like I was back in San Francisco city traffic. Restaurants were booked up, the beach was extra busy, customs at the airport a nightmare. I've also been in June, when everything was less crowded, the temperatures were higher, and the likelihood of rain increased. February was the sweet spot for me.
Knowing the climate of Tulum, as well as the low and high seasons, can make all the difference when you travel.
High season in Tulum: December through April. Temperatures are warm, there's the most chance for sun, and you avoid the rainy season. However, because this time is peak season, costs will be higher, and there will likely be more people visiting.
Summer season in Tulum: Summer season, or midseason, is usually May/June to October. This is also generally the more rainy season, and humidity is typically at its highest during some of these months.
Low season in Tulum: September and October, due to the fact that it's hurricane season and the two rainiest months of the year. Late Fall (November) is considered midseason, where weather improves and tourism picks back up again. On most hotel sites, the rates are broken down by season, so make sure to check before you book.
