Monthly climate guide
Cancún weather in August
Expect hot weather in Cancún in August: afternoons reach about 31°C (87°F), while nights drop to around 27°C (80°F). Around 123 mm of rain falls over the month (wet), and skies are often cloudy. Daytime highs are about the same as July and about the same as September.
What stands out in August
- Plan Isla Mujeres for the cooler hours — early morning is best.
- Humidity near 81% makes 31°C feel stickier than it sounds.
- There's little difference between day and night (around 4°C).
- Just 290 km apart, but Cancún runs about 2°C cooler than Mérida this month.
August is typically Cancún's warmest month.
Avg high
31°C
87°F
Avg low
27°C
80°F
Rainfall
123 mm
wet
Humidity
81%
relative
Sky
55%
cloud · often cloudy
Cancún weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 27°C / 80°F | 22°C / 72°F | 82 mm | 77% | 54% |
| February | 27°C / 81°F | 23°C / 73°F | 47 mm | 76% | 39% |
| March | 28°C / 83°F | 23°C / 74°F | 39 mm | 73% | 37% |
| April | 30°C / 86°F | 25°C / 76°F | 39 mm | 73% | 35% |
| May | 30°C / 87°F | 26°C / 78°F | 90 mm | 75% | 43% |
| June | 30°C / 85°F | 26°C / 79°F | 218 mm | 83% | 61% |
| July | 30°C / 86°F | 27°C / 80°F | 72 mm | 81% | 49% |
| August | 31°C / 87°F | 27°C / 80°F | 123 mm | 81% | 55% |
| September | 30°C / 86°F | 27°C / 80°F | 176 mm | 83% | 59% |
| October | 29°C / 84°F | 26°C / 78°F | 253 mm | 83% | 59% |
| November | 28°C / 82°F | 24°C / 75°F | 135 mm | 80% | 51% |
| December | 27°C / 81°F | 23°C / 74°F | 76 mm | 79% | 48% |
What to pack for August
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is August a good time to visit Cancún?
Our Cancún guide recommends: December to April, in the dry season and outside the June–November hurricane season.
Chichén Itzá and Tulum are both feasible day trips from Cancún — book an early departure to avoid the worst of the midday heat and crowds.
Best time to visit Cancún →Other Mexico cities in August
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Cancún weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/mexico/cancun/august
<a href="https://weathercompare.eu/weather/mexico/cancun/august">Cancún weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/mexico/cancun" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Cancún weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/mexico/cancun/august">Cancún weather in August</a> – WeatherCompare</p>
Cancún in August: quick answers
Is August a good time to visit Cancún?
August is one of the wetter months in Cancún, with about 123 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Cancún in August?
Average highs are about 31°C (87°F) and average lows about 27°C (80°F), based on 10 years of daily data.
Does it rain a lot in Cancún in August?
Cancún typically gets around 123 mm of rain in August — wet.
When is the best time to visit Cancún?
December to April, in the dry season and outside the June–November hurricane season.
Figures are long-term averages for the area around Cancún (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.