May weather forecast
Nuevo Vallarta, Mexico

May in Nuevo Vallarta witnesses a significant increase in warmth as temperatures scale from 19.6°C (67.3°F) to 30.4°C (86.7°F). Although the rise in temperature, humidity levels experience a slight increase to 65%, preventing weather from becoming oppressive. Rainfall registers a modest uptick to 8mm (0.31") dispersed over four days, suggesting that showers remain sparse. Complementing the warmer weather, sunshine stretches over 9.8 hours a day, enabling ample time for outdoor pursuits. Ten kilometers of visibility prevail, granting undisrupted sightseeing and activities.

Temperature

May temperatures tend to peak at an average high of 30.4°C (86.7°F) and dip to a low of 19.6°C (67.3°F).

Heat index

In May, the heat index is evaluated at a torrid 35°C (95°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in May in Nuevo Vallarta, Mexico, is 65%.

Rainfall

In Nuevo Vallarta, in May, during 4 rainfall days, 8mm (0.31") of precipitation is typically accumulated. Throughout the year, there are 153.3 rainfall days, and 735mm (28.94") of precipitation is accumulated.

Daylight

The average length of the day in May is 13h and 8min.
On the first day of the month, sunrise is at 6:30 am and sunset at 7:25 pm. On the last day of May, in Nuevo Vallarta, sunrise is at 6:19 am and sunset at 7:38 pm CST.

Sunshine

With an average of 9.8h of sunshine, May has the most sunshine of the year.

UV index

January through November, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In May, a regular UV index of 6 translates into these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.