Cancún weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Excellent
Best time to visit: July, November – May
What is the weather like in Cancún in July?
In July, Cancún is hot: daytime highs average 30 °C, and even at night it stays warm at around 27 °C. The sea averages 28.9 °C – lovely and warm for swimming. With around 10 hours of sunshine a day, there is plenty of sun. It is the rainy season: rain falls on about 18 days, totalling 110 mm. On about 14 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is an excellent month for a holiday in Cancún.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 13 h 19 min06:14 – 19:32
- UV index
- 12 · extremeclear sky, noon (estimate)
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 17 km/haverage daily peak
- Cloud cover
- 51 %on average
- Hot days
- 14 days30 °C or more
- Time zone
- UTC−5America/Cancun
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %4 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in July
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Cancún in July: quick answers
Is Cancún hot in July?
Yes. In July, Cancún is hot: daytime highs average 30 °C and nights stay around 27 °C. On about 14 days the thermometer climbs to 30 °C or more.
Can you swim in Cancún in July?
Yes. In July the sea averages 28.9 °C – lovely and warm for swimming.
Does it rain much in Cancún in July?
It rains often – on about 18 days, adding up to 110 mm.
Cancún month by month
The whole year in CancúnAll destinations: Mexico
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)