July weather forecast
Puerto Vallarta, Mexico

July observes a peak in both temperatures and humidity. Torrential downpour dominates Puerto Vallarta with the highest annual rainfall of 136mm (5.35"). Consequently, nature blooms in all its glory, adding a beautiful green hue to the cityscape. The sea temperatures climb to a breezy 29.7°C (85.5°F), stimulating water-related activities despite the escalating temperatures. The simmering heat, coupled with intermittent showers, adds a unique charm to Puerto Vallarta’s July weather.

Temperature

The transition into July in Puerto Vallarta reveals an average high-temperature of a still moderately hot 29.3°C (84.7°F), mirroring a close resemblance to June. In July, Puerto Vallarta encounters an average low-temperature of 22°C (71.6°F) during the night.

Heat index

During July, the heat index is appraised at a sweltering 36°C (96.8°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in July is 81%.

Rainfall

In Puerto Vallarta, in July, it is raining for 27.3 days, with typically 136mm (5.35") of accumulated precipitation. In Puerto Vallarta, during the entire year, the rain falls for 153.3 days and collects up to 735mm (28.94") of precipitation.

Sea temperature

In Puerto Vallarta, in July, the average water temperature is 29.7°C (85.5°F).
Note: In water activities such as swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed highly pleasurable for extended periods without any unease.

Daylight

The average length of the day in July in Puerto Vallarta is 13h and 14min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:45 pm. On the last day of July, sunrise is at 6:35 am and sunset at 7:39 pm CST.

Sunshine

The average sunshine in July is 8.6h.

UV index

January through November, with an average maximum UV index of 6, are months with the highest UV index in Puerto Vallarta. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 6 during July, leads to the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Alert! Sand and water increase UV exposure due to their reflective properties.