August in Tulum means humid heat and increasingly frequent afternoon rain: 90 °F highs, an 84 °F sea and the chance of a wet day climbing from 44% to 51%. The first half is still school vacation; the second half empties out. We write this from downtown Tulum, where we rent our apartment, using Weather Spark's averages and NOAA climatology.
What is the weather like in Tulum in August?
The typical high is around 90 °F (32 °C) and the low around 70 °F (21 °C). The chance of a wet day rises from 44% to 51% and rainfall from about 4.2 to 5.2 inches. Every day is muggy and the sea holds at 84 °F (29 °C).
| Metric | Start of month | End of month |
|---|---|---|
| Typical high | ~90 °F (32 °C) | ~90 °F (32 °C) |
| Early-morning low | ~70 °F (21 °C) | ~70 °F (21 °C) |
| Chance of a wet day | ~44% | ~51% |
| Muggy days | ~100% | ~100% |
| Daylight | 13 h 2 min | 12 h 32 min |
| Sea temperature | ~84 °F (29 °C) | ~84 °F (29 °C) |
Source: Weather Spark historical averages for Tulum. Averages, not a forecast.
Atlantic hurricane season runs June 1 to November 30 and peaks around September 10: August is the ramp-up. Get weather-cancellation insurance, follow official advisories and keep ocean activities flexible.
Is there sargassum in Tulum in August?
August is usually one of the heaviest sargassum months. In August 2026, the record year, about 90,500 tonnes were floating off Quintana Roo. The University of South Florida bulletin dated September 30, 2026 confirms amounts fall after summer, but that says nothing yet about August 2027. The page we keep current, with the latest University of South Florida bulletin and how to check a beach before you go, is sargassum in Tulum: season and plan B.
Dates that move Tulum in August 2027
- First half: the last vacation weeks. Families from Mexico and the US are still around.
- Second half: back to school. Occupancy drops and the quietest stretch of the year begins, continuing into September.
- All month: turtle hatchling releases. Releases in Tulum run July to November.
Which August weeks to book
For calm, the second half of August is much quieter than the first. The trade-off is that rain and hurricane activity keep rising toward September.
| Dates | Vibe | Best for |
|---|---|---|
| Aug 1 - 15 | Last vacation weeks, more families | Families |
| Aug 16 - 31 | Very quiet, wetter | Couples, remote workers and long stays |
Things to do in Tulum in August
Ruins first thing
The Tulum archaeological site opens 8:00 a.m. to 5:00 p.m., last entry 3:30 p.m. Since the federal decree of July 20, 2026, foreigners pay 265 pesos in total (Jaguar Park plus the site) and Mexican nationals 80 pesos Monday to Saturday, free on Sundays. It's about 10 minutes by bike from downtown. Details: our Tulum ruins guide.
Cenotes and lagoons
Rain or seaweed, cenotes stay the same: 75-78 °F water and no waves. Gran Cenote and Calavera are 8-12 minutes away: the best cenotes near Tulum.
Getting to Tulum in August
Several US routes to Tulum airport (TQO) are winter-seasonal, running roughly November to April; outside that window there are fewer direct flights, so always compare with Cancún. Cancún is 1 h 45 min away by road. From Tulum airport to downtown is about 30 minutes; Uber and Didi don't operate normally and taxi fares are agreed before you get in. Options: Tulum airport to downtown.
Where to stay in Tulum in August
In August, what saves the trip is a plan B on hand: downtown has restaurants within walking distance for rainy days, a pool when the sea has seaweed and AC for the humidity.
Hacienda Tuk is a 2-bedroom apartment in downtown Tulum, inside the Tuk Tulum complex, with the building's shared pool, a rooftop, air-conditioned bedrooms and a full kitchen. Booking direct, the reference rate is from 85 USD per night (about 1,500 MXN), 10% below the lowest Airbnb price on October 8, 2026; the host confirms the exact rate for your dates. To book, pick dates on the apartment page calendar, see the estimate and send the request directly on the website, with no platform fee. Nothing is charged before confirmation, which usually arrives within 24 hours.
Frequently Asked Questions
Is August a good time to visit Tulum?
It works if you come prepared: an 84 °F sea and, in the second half, few people. The downsides: rain on 44-51% of days, seaweed and a rising hurricane season.
Are there hurricanes in Tulum in August?
August is the ramp-up of the season, which peaks around September 10. Get cancellation insurance and check official advisories.
Is there seaweed in Tulum in August?
In a typical year it's one of the heaviest months; in August 2026 about 90,500 tonnes floated off Quintana Roo.
When is August least crowded?
August 16-31, once schools are back.
How do I book the apartment for August?
On the apartment page, choose dates on the calendar, see the estimate and send the request directly on the website. Nothing is charged until the host confirms.