How warm is Cancún in July?

Typical highs are about 89°F and the sea is about 84°F. That is warm enough for long swims without a wetsuit.

Is there sargassum in Cancún in July?

In a typical year seaweed is high in July. It is usually lightest in January and December and heaviest in July and August. Landings vary a lot by year, wind and currents; Veabird's weekly sargassum report and each beach's page have the current forecast.

Is July hurricane season in Cancún?

July falls in the tropical storm season; the typical risk on a given day is low. It peaks in September. Travel insurance and flexible bookings help.

How crowded is Cancún in July?

Typically very busy, around US summer school break, Mexico summer vacation and Independence Day (US). The quietest months are usually September and October.

Cancún in July

July is one of the weakest months for a beach trip to Cancún: a typical day grades C+, the 10th best of the 12 months. Expect highs near 89°F, water around 84°F and about a 61% chance of rain on a given day. Sargassum (seaweed) is usually high in July. Beaches are typically very busy (US summer school break, Mexico summer vacation and Independence Day (US)).

Typical dayC+10th of 12 months

Highs / water89°FSea 84°F

Rain chance61%on a given day

SeaweedHightypical year

CrowdsVery busyUS summer school break

Storm riskLowhurricane season

Cancún month by month

Typical grade and high for each month. Higher is better: A+ to F.

June: B- · July: C+ · August: C. The best months are usually February, April and May, and the weakest are August and September.

Best beaches in Cancún in July

Resorts with the best typical July, and their grades for the next few days.

Beach	Typical Jul	Seaweed	This week
Holbox Island Hotels	A-	Very low	SatC+SunC+MonC-TueCWedC
Villas Flamingos	A-	Very low	SatC+SunC+MonC-TueCWedC
Villas Delphines	A-	Very low	SatC+SunC+MonC-TueCWedC
Xaloc Resort	A-	Very low	SatC+SunC+MonC-TueCWedC
Club Las Hamacas	A-	Very low	SatC+SunC+MonC-TueCWedC
Bahia Tolok	B+	Moderate	SatC+SunB+MonB+TueB+WedA-
Selina Hotel Cancun Lagoon Zona Hotelera	B+	Moderate	SatCSunB-MonBTueB+WedB+
Hotel Villa Rolandi	B+	Moderate	SatC+SunB+MonB+TueB+WedA-

Grades for the next few days from Veabird's beach forecast, updated Oct 3, 18:00 UTC. Higher is better: A+ to F.

Better beach options in July

Elsewhere in Mexico, Los Cabos (A-), Huatulco (A-) and Puerto Vallarta (A-) usually grade higher in July. Further afield: Maui (A), Oʻahu (A) and Kauaʻi (A-). Every destination in July.

Questions

Is July a good time to visit Cancún?: July is one of the weakest months for a beach trip to Cancún: a typical day grades C+, the 10th best of the 12 months. Expect highs near 89°F, water around 84°F and about a 61% chance of rain on a given day. Sargassum (seaweed) is usually high in July. Beaches are typically very busy (US summer school break, Mexico summer vacation and Independence Day (US)).
How warm is Cancún in July?: Typical highs are about 89°F and the sea is about 84°F. That is warm enough for long swims without a wetsuit.
Is there sargassum in Cancún in July?: In a typical year seaweed is high in July. It is usually lightest in January and December and heaviest in July and August. Landings vary a lot by year, wind and currents; Veabird's weekly sargassum report and each beach's page have the current forecast.
Is July hurricane season in Cancún?: July falls in the tropical storm season; the typical risk on a given day is low. It peaks in September. Travel insurance and flexible bookings help.
How crowded is Cancún in July?: Typically very busy, around US summer school break, Mexico summer vacation and Independence Day (US). The quietest months are usually September and October.

Plan it

Cancún & Isla Mujeres: this week's forecast, beach by beach
Mexico Beach Report: this week, updated every Monday
Compare dates and beaches on the map

Typical-month numbers from Veabird's year-ahead outlook for the 86 resorts here (median resort): 6 years of ERA5 climate normals, the seasonal pattern of the Atlantic sargassum belt, holiday crowd calendars and historical storm tracks. Any given year can differ; check the 16-day forecast before you go.