What September feels like in Tulum
September falls in Tulum's wet season — the rainfall numbers rise clearly above the dry months. The midday hours are hot; shade and water matter on long walks. Evenings ease the heat only slightly, and nights remain very warm. Thick, humid air means clothes cling and the heat feels stronger than the number.
Rain in Tulum in September
Rain is part of normal life this month, falling on most days. A rainy day brings about 8.3 mm (0.3 in) on average — steady rain rather than a passing shower. Across the year Tulum averages about 7 mm per rainy day, so September is typical. It is among the three wettest months of the year.
How September compares to the rest of the year
Ranked by average high, September comes out as the 3rd warmest month in Tulum. Afternoons run 0.5°C (0.9°F) cooler than in August, with 41 mm more rain. Temperatures keep falling into October. The next month's average high: 29.3°C (84.7°F).
Who September suits
- Sightseeing: less ideal — rain falls on more than half the days.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Museums & indoor: a good choice — with rain on most days, galleries and museums make easy plans.
Tips for visiting Tulum in September
Rain Protection
A packable rain jacket saves the day on showery afternoons.
Sun Protection
Sunscreen, a hat and sunglasses; light breathable clothes.
Quick questions
How warm is Tulum in September?
Expect around 30.2°C (86.4°F) in the afternoon and 25.5°C (77.9°F) at night, which most visitors would call hot.
Does it rain a lot in Tulum in September?
It does: about 22 rainy days bring roughly 182 mm, so plan some indoor options.
What should I wear in Tulum in September?
Based on the averages: rain protection and sun protection. There is little need to change for the evening.
Is September or October better for visiting Tulum?
On our 12-month climate ranking, October comes out ahead (#10 of 12 vs #11). October has fewer rainy days.
