June weather forecast
Cancún, Mexico

June ushers in the climatic peak in Cancún with the height of summer temperatures. These heightened conditions persist into the early evenings, providing tourists with extended hours of warm weather for their activities. Despite the high humidity levels, the cooling sea breeze offers relief to the city. Noteworthy weather parameters in June include a temperature range from 30.1°C (86.2°F) to 26.6°C (79.9°F), and a hefty 113mm (4.45") of rainfall scattered across 18.9 days. Therefore, it's advisable for visitors to make suitable arrangements considering the elevated temperatures and rainfall during this month.

Temperature

During June, Cancún records an average high-temperature of a tropical 30.1°C (86.2°F), marking a slight divergence from May's 29.8°C (85.6°F). Cancún registers a subtle dip to an average of 26.6°C (79.9°F) during the nights of June.

Heat index

The heat index value during June is appraised at a torrid 37°C (98.6°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

June is the most humid month, with an average relative humidity of 78%.

Rainfall

In June, the rain falls for 18.9 days. Throughout June, 113mm (4.45") of precipitation is accumulated. In Cancún, during the entire year, the rain falls for 224.7 days and collects up to 886mm (34.88") of precipitation.

Sea temperature

In June, the average sea temperature is 28.4°C (83.1°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

June has the longest days of the year, with an average of 13h and 24min of daylight.
On the first day of the month, sunrise is at 6:05 am and sunset at 7:25 pm. On the last day of June, in Cancún, sunrise is at 6:09 am and sunset at 7:33 pm EST.

Sunshine

In Cancún, the average sunshine in June is 8.6h.

UV index

The months with the highest UV index in Cancún are March through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In June, a daily maximum UV index of 7 leads to the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Alert! Sand and water increase UV exposure due to their reflective properties.