Cancún (Riviera Maya) weather in July

July in Cancún: sweltering, rainy, with muggy air — fine if you can take 37°C afternoons.

Updated September 2026 · climate normals from ERA5 reanalysis

Cancún🇲🇽 Mexico · Yucatán & Belize · Beach85
  1. 87Jan
  2. 91Feb
  3. 93Mar
  4. 92Apr
  5. 86May
  6. 77Jun
  7. 85Jul
  8. 80Aug
  9. 78Sep
  10. 79Oct
  11. 86Nov
  12. 87Dec

#8 of 12 months in Cancún · #471 of 1413 destinations to visit in July · comfort 85/100 (tier A)

Days
32°C
Nights
26°C
Wet days
16
Sun
11.8 h
Humidity
79%
Daylight
13 h
Cancún, Mexico
Photo: Mylo Kaye · Pexels

What July is like in Cancún

Hot, wet and humid, with whale-shark season at its peak and sargassum often heavy along the beaches.

monsoonlow season

confidence: high

Traveller notes on Cancún in July

Other months in Cancún

Regulars are consistent this month can turn sunny and hot for a stretch, then briefly cloudy and cool when a cold front passes through, before swinging back to sunny and hot again within a day or two. Our row backs that warm, still-showery read, 27.7C reading as a hot 30C, over 21.5C nights, with 30.1mm of rain across 7.4 days and humidity at 73 percent. Regulars are specific that tropical showers here tend to last only 5-10 minutes rather than settling in, and that packing a light sweater for cooler evenings is worth it even on an otherwise warm trip. The sea sits at a warm, swimmable 26.8C regardless of which version of the day arrives. The record: 9.8 hours of sun, a 20.4 kph wind and AQI 47.
ColdFrontsPassThenSunnyAgainQuickly · February · 1 month ago · Read more on Tripadvisor ↗
Cancun-forum threads asking about August hurricane season are consistent the odds of an actual storm hitting are low through most of the month, ticking up only toward the very end as the wider season builds toward its September-October peak. A typical day is described as sunny, hot and humid, with forecasts often calling for rain that doesn't necessarily show up - and when it does arrive, it's usually overnight or a brief afternoon burst rather than an all-day washout. Posters call the ocean warm enough to feel almost bath-like, a genuine plus for anyone prioritizing swimming and snorkeling over cooler water. Regulars are consistent that most August trips proceed entirely normally, and recommend simply keeping half an eye on the tropical outlook rather than avoiding the month outright. The record: 31.8C days feeling like a punishing 37C, 25.2C nights, a 28.5C sea and 80 percent humidity.
HotelZoneAugustRegular · August · 1 month ago · Read more on Tripadvisor ↗
Cancun-forum threads on September weather confirm it's sunny and hot with high humidity most days, a typical afternoon high around 32C that feels considerably warmer given the moisture in the air. September sits squarely in hurricane season and is one of the two busiest months for tropical activity, but posters are consistent that forecasts calling for rain and storms every day rarely match the actual experience - genuine all-day washouts are called rare, with rain more typically landing overnight or as a brief afternoon burst. Regulars recommend travel insurance covering storms as a sensible precaution, even though the odds of a direct hit on any specific week are described as slim. The clear upside: noticeably lower rates and thinner crowds than the winter high season. The record: 31.3C days feeling like a punishing 37C, 24.8C nights, 175mm across 23.3 days, 82 percent humidity, a 29.9C sea and 10.5 hours of sun.
ZonaHoteleraSeptemberRegular · September · 1 month ago · Read more on Tripadvisor ↗
April in Cancun is dry, hot and squarely inside the worst of the sargassum. Regulars put the peak at April through June, arriving daily and in quantity, varying by the day and by the stretch of beach; their mitigation is geography - it thins going north towards Costa Mujeres, the western shore of Isla Mujeres sees less, and many hotels rake their frontage each morning. Lent can also be very windy here, which our row's 20.9 kph reflects. The other April question is spring break: most American school breaks fall in the last two weeks of March, and the consensus is that Cancun is big enough to dilute them. The record: 29.5C days that feel like 33C, 23.7C nights, 5.7 precipitation days carrying 31.7mm and a 27.2C sea.
NorthToCostaMujeres · April · 1 month ago · Read more on Tripadvisor ↗

Year-round notes are on Cancún's overview. Add your own note from Cancún's card on the map.

Cancún climate normals — July

Daytime high32°C / 89°F🔥 sweltering
Nighttime low26°C / 78°F
Feels like (high)37°C / 99°F
Sea temperature29°C / 85°F♨️ bath-warm
Rainfall87 mm / 3.4 in🌧 rainy
Rainy days16 days
Humidity79%💦 very humid
Dew point25°C / 77°F
Sunshine11.8 h/day
Daylight13.3 h
Wind16 km/h / 10 mph
Air quality (US AQI)63🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Cancún in July

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quietthe editor's quiet month, Mexican summer holidays, school holidays in 3 of the markets that fill it

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Cancún's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherCancún's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

JFMAMJJASOND

What's on in Cancún in July

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Rule

    Visitor tax and park fees

    1 Jan – 31 Dec

    Quintana Roo charges every foreign visitor a state tourism fee, paid online before you fly out, and the marine parks off Isla Mujeres and Cozumel add their own per-day charge on the boat. Source ↗

  • Season

    Sargassum season

    1 Apr – 30 Sep · usuallyRisk

    Rafts of brown seaweed pile up on the east-facing beaches, worst between May and August. It rots fast and smells, hotels rake it at dawn, and the north-facing beaches at Isla Mujeres usually escape it. Source ↗

  • Nature

    Sea turtle nesting

    1 May – 31 Oct · usually

    Loggerheads and greens come up the hotel-zone beaches at night through the summer and the hatchlings run from August. Beach lighting is dimmed and the nests are fenced; the releases are run by the hotels. Source ↗

  • Hazard

    Hurricane season

    1 Jun – 30 Nov

    The Atlantic season runs June to November, with most activity between mid-August and mid-October. Source ↗

  • Nature

    Whale sharks off Isla Mujeres

    15 Jun – 15 SepDive seasonBook early

    Hundreds of whale sharks gather to feed north of Isla Mujeres and the permitted swim season runs from mid-June to mid-September, July being the densest. It is a three-hour boat day in open water, often a rough one. Source ↗

  • Holiday

    Mexican summer holidays

    15 Jul – 31 Aug · usuallySchool holidaysCrowded

    Domestic school holidays fill the hotel zone with Mexican families, which is a different and cheaper crowd than spring break but the same queue at Xcaret. Source ↗

What's on around the world in July →

Nearby, and something's on

Within 300 km of Cancún — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Cancún?

Loading map…

Cancún in July — FAQ

Is July a good time to visit Cancún?
July in Cancún: sweltering, rainy, with muggy air — fine if you can take 37°C afternoons. It ranks #8 of 12 months for Cancún on SeasonMap's comfort score (85/100).
What is the weather like in Cancún in July?
In July, Cancún averages a daily high of 31.8°C and a low of 25.5°C, with about 86.9 mm of rain over roughly 15.8 rainy days.
What is the air quality in Cancún in July?
Cancún has a mean US Air Quality Index of about 63 in July.

Within 300 km: Isla Mujeres' Whale shark season on 15 May – 17 Sep, and Holbox's Whale shark season on 15 May – 17 Sep.