
Cancún in July
Summer holiday busy
- Temperature
- 25–34°C
- Crowds
- Moderate–High
- Prices
- $$$
+Warm sea and long days.
–Hot, humid and storm risk.
July is hot and humid, with summer holiday crowds from the US and Mexico.


San Juan edges it in July. Cancún averages 25–34°C with moderate–high crowds; San Juan 25–32°C with moderate crowds.
By Daan · Last reviewed October 2026
Cancún and San Juan
The verdict for July

Summer holiday busy
+Warm sea and long days.
–Hot, humid and storm risk.
July is hot and humid, with summer holiday crowds from the US and Mexico.

Hot summer holidays
+Long sunny spells between showers.
–Hot and humid.
July is hot and humid, with summer holiday visitors.
Scores and crowd levels are my own judgement; temperatures are monthly averages. Higher scores are better: quieter, cheaper and more pleasant.
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