What to pack for Cancún in August
- light, breathable clothing
- sun protection (hat, SPF 50)
- a compact umbrella or rain shell — rain is frequent
- expect humid, sticky conditions
Humidity averages 81%; max daily wind around 16 km/h.
How August compares
Best months in Cancún: December–March. See the full best time to visit Cancún guide.
Cancún in August: the details
In August, Cancún sees average daytime highs of 31°C (89°F) and overnight lows of 26°C (78°F). Rainfall totals roughly 132 mm across 19 rainy days, and the sun shines about 11.2 hours per day with 12.7 hours of daylight mid-month. Relative humidity averages 81%.
In context: August is the warmest month of the year and the 4th-wettest in Cancún. The sunniest month is April (11.8 h/day).
| Metric | August average |
|---|---|
| Daytime high | 31°C / 89°F |
| Overnight low | 26°C / 78°F |
| Rainfall | 132 mm over 19 rainy days |
| Sunshine | 11.2 h/day (12.7 h daylight) |
| Humidity | 81% |
| Travel score | 3.4 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Cancún, Mexico (21.17, -86.85) — see our methodology. Actual conditions vary year to year.
Not set on Cancún? Browse the best places to visit in August ranked by travel score.
Frequently asked questions
How hot is Cancún in August?
Daytime highs in Cancún in August average 31°C (89°F); nights drop to about 26°C.
Does it rain in Cancún in August?
Expect around 19 rainy days and 132 mm of rainfall in August.
Is August a good time to visit Cancún?
August is a challenging month to visit Cancún — consider December–March instead. Overall travel score: 3.4/10. The best months are December–March.
Also good in August, near Cancún
Where should you go next month?
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