20-Year Climate Average
Cancún, Quintana Roo, Mexico Weather in August
Normal High
87°F
Normal Low
79°F
Rainy Days
~26 of the month
Chance of Rain
83%
Humidity
79%
UV index
Not available
Daylight
12.8 hours
Peak wind
10 mph
Usually good for: beaches and outdoor dining.
Based on August climate records from 2006–2025 (Open-Meteo Historical Weather Archive). These are planning averages, not a forecast. Data: Open-Meteo.com, CC BY 4.0.
Current conditions
Forecast versus the climate baseline
81°F
It currently feels like 92°F with 88% humidity, a 77°F dew point and 3 mph wind. Climate averages describe the month; this live reading is what matters for plans today.
90° / 78° · 90% rain
88° / 76° · 88% rain
88° / 76° · 100% rain
Best Months to Visit Cancún, Quintana Roo, Mexico
Ranked by historical rainy-day frequency — the driest months over the past 20 years.
Methodology
Monthly values use the 2001–2020 observation period. Temperature, precipitation, humidity or dew point, wind, UV and daylight are shown only when the selected source provides them; unavailable fields are never estimated or silently replaced. These are planning normals, not guarantees for a specific trip.
What is the weather like in Cancún, Quintana Roo, Mexico in August?
The 20-year average high in Cancún, Quintana Roo, Mexico in August is 87°F, with a low around 79°F and about 26 rainy days.