Weather in Riviera Maya in July

How July compares

July is the 2nd warmest month of the year in Riviera Maya. Within Mexico it is 3rd of 5 (Mexico in July). Against London's average high of 21.8°C in July, Riviera Maya is 8.1°C warmer by day and 12.5°C warmer at night.

Daytime and night-time in July

The typical July day in Riviera Maya peaks at 29.9°C, but that is an average: the warmest 10% of days reach 31.0°C or more. About 100% of days top 25°C and 1 in 2 pass 30°C. Nights average 26.0°C; one night in ten drops to 25.0°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest July day here reached 32.8°C (2019-07-29) and the coldest night 23.3°C (1999-07-07).

Rain in July

Wet (more than 8 rainy days): about 17 days with 1 mm or more, 106 mm in total. Year to year it varies a lot - the wettest July was 2010 with 292 mm, the driest 2019 with 21 mm. Humidity averages 82%, which makes the heat feel heavier than the thermometer suggests.

Sea temperature in July

The sea averages 28.7°C - warm enough to swim (22°c+). Depending on the year it ranges from 28.2°C to 29.1°C. For the warmest sea here, come in September (29.2°C).

Sunshine and daylight

Around 6.0 hours of sunshine a day (estimated from cloud cover), 13.1 hours of daylight: the sun rises about 06:16 and sets about 19:32 local time in mid-July. Average cloud cover is 54%.

Is July a good time to visit Riviera Maya?

It is a reasonable choice: hot days but expect showers. The best months for Riviera Maya on our scoring are March, April, February; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Hot days without much relief at night

July is among the warmest months in Riviera Maya, so plan around the heat rather than expecting to stay active comfortably all day. Temperatures reach 30°C on 53% of days, while humidity averages 82%, making light, loose clothing a sensible choice. Keep midday plans easy, allow time in the shade and carry water when heading out. Evenings are warm rather than cool, with an average low of 26°C, so do not expect nightfall to bring much relief. If warm bedrooms make sleeping difficult, prioritise air conditioning when choosing accommodation. This weather suits heat lovers better than travellers who prefer cool evenings.

Allow for rain, but not constant gloom

About 17 rainy days means wet weather needs to be part of your planning, not treated as an unlikely inconvenience. That does not mean those days are wet throughout, but it would be unwise to build the trip around uninterrupted sunshine. July still averages about 6 hours of sunshine within 13.1 hours of daylight, leaving scope for outdoor time alongside less sunny spells. Keep plans flexible, pack a lightweight waterproof and have something to do when rain arrives. The figures do not establish a dependable time of day for rainfall, so avoid assuming mornings will always be dry or that rain will only fall briefly.

Warm water is a strong reason to go

The sea averages around 29°C, making swimming a clear strength of a July visit. If your main aim is spending time in warm water, the temperature is unlikely to be the drawback; rain and the heat out of the water are the bigger compromises. Sea temperatures vary between 28°C and 29°C from year to year, so this is consistently warm swimming weather in temperature terms, rather than a bracing dip. July makes sense if that matters more to you than dry conditions. If your dates are flexible, March, April and February are rated better overall for holiday weather here.