August weather forecast
Puerto Vallarta, Mexico

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A picturesque city Vallarta in Mexico
A picturesque city Vallarta in Mexico

Weather in August

August reflects similar weather conditions to July, but the temperature displays a slight dip. However, the rainy season persists in Puerto Vallarta with rainfall volumes shooting up to an annual high of 167mm (6.57"). Despite the reduced daylight the warmth, high humidity at 84% and sea temperature soaring to the year's maximum at 30.3°C (86.5°F) perpetuates the sultry appeal of the seaside city.
Also, as it has been observed, the wind speed dips to a calm 5.5km/h (3.4mph) adding to the tranquility of the August weather in Puerto Vallarta.

Temperature

As July transitions into August, Puerto Vallarta records an average high-temperature of a still moderately hot 29.3°C (84.7°F), consistent with the preceding month. An average low-temperature of 22.1°C (71.8°F) is observed during August nights.

Heat index

August's heat index is appraised at a torrid 37°C (98.6°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The months with the highest humidity in Puerto Vallarta are August and September, with an average relative humidity of 84%.

Rainfall

The month with the most rainfall is August, when the rain falls for 27.7 days and typically aggregates up to 167mm (6.57") of precipitation.

Sea temperature

The months with the warmest seawater are August and September, with an average sea temperature of 30.3°C (86.5°F).
Note: Water sports might not feel as refreshing in waters heated beyond 30°C (86°F).

Daylight

In August, the average length of the day is 12h and 49min.
On the first day of the month, sunrise is at 6:35 am and sunset at 7:38 pm. On the last day of August, sunrise is at 6:44 am and sunset at 7:17 pm CST.

Sunshine

The months with the least sunshine in Puerto Vallarta are August and September, with an average of 8.4h of sunshine.

UV index

The months with the highest UV index are January through November, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Stay sun-safe with clothing that is both closely woven and worn loosely. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
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Frequently asked questions

How hot is August in Puerto Vallarta?

August temperatures in Puerto Vallarta vary between a high-temperature of 29.3°C (84.7°F) and a low-temperature of 22.1°C (71.8°F). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 37°C (98.6°F).

What are the most humid months in Puerto Vallarta?

August and September, with an average relative humidity of 84%, are most humid months.

What is the average humidity in August in Puerto Vallarta?

In Puerto Vallarta, Mexico, the average relative humidity in August is 84%.

What is the wettest month in Puerto Vallarta?

The month with the most rainfall in Puerto Vallarta is August, when the rain falls for 27.7 days and typically aggregates up to 167mm (6.57") of precipitation.

How many days does it rain in August in Puerto Vallarta?

In Puerto Vallarta, Mexico, during August, the rain falls for 27.7 days and regularly aggregates up to 167mm (6.57") of precipitation.

When is the sea warmest in Puerto Vallarta?

The months with the warmest seawater in Puerto Vallarta, Mexico, are August and September, with an average sea temperature of 30.3°C (86.5°F).

What is the sea water temperature in August in Puerto Vallarta?

In Puerto Vallarta, in August, the average water temperature is 30.3°C (86.5°F). For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

How many hours of daylight does Puerto Vallarta have in August?

In Puerto Vallarta, the average day length in August is 12h and 49min.

When are sunrise and sunset in August in Puerto Vallarta?

In August, on the first day of the month, sunrise is at 6:35 am and sunset at 7:38 pm. On the last day of the month, in Puerto Vallarta, sunrise is at 6:44 am and sunset at 7:17 pm CST.

What is the month with the least sunshine in Puerto Vallarta?

August and September, with an average of 8.4h of sunshine, are months with the least sunshine in Puerto Vallarta, Mexico.

How long on average sun shines in August in Puerto Vallarta?

In August, the average sunshine duration in Puerto Vallarta, Mexico, is 8.4h.

What is the month with the highest UV index in Puerto Vallarta?

January through November, with an average maximum UV index of 6, are months with the highest UV index in Puerto Vallarta.

What is the UV index intensity in August in Puerto Vallarta?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.

Average temperature in August
Puerto Vallarta, Mexico

Average temperature in August - Puerto Vallarta, Mexico
  • Average high temperature in August: 29.3°C

The warmest month (with the highest average high temperature) is May (30.4°C).
The month with the lowest average high temperature is January (26.3°C).

  • Average low temperature in August: 22.1°C

The month with the highest average low temperature is August (22.1°C).
The coldest month (with the lowest average low temperature) is February (16.4°C).

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Average pressure in August
Puerto Vallarta, Mexico

Average pressure in August - Puerto Vallarta, Mexico
  • Average pressure in August: 1011.7mbar

The month with the highest atmospheric pressure is January (1014.7mbar).
The month with the lowest atmospheric pressure is September (1010.9mbar).

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Average wind speed in August
Puerto Vallarta, Mexico

Average wind speed in August - Puerto Vallarta, Mexico
  • Average wind speed in August: 5.5km/h

The windiest month (with the highest average wind speed) is March (7km/h).
The calmest month (with the lowest average wind speed) is August (5.5km/h).

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Average humidity in August
Puerto Vallarta, Mexico

Average humidity in August - Puerto Vallarta, Mexico
  • Average humidity in August: 84%

The months with the highest relative humidity are August and September (84%).
The months with the lowest relative humidity are March and April (60%).

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Average rainfall in August
Puerto Vallarta, Mexico

Average rainfall in August - Puerto Vallarta, Mexico
  • Average rainfall in August: 167mm

The wettest month (with the highest rainfall) is August (167mm).
The driest month (with the least rainfall) is April (1mm).

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Average rainfall days in August
Puerto Vallarta, Mexico

Average rainfall days in August - Puerto Vallarta, Mexico
  • Average rainfall days in August: 27.7 days

The month with the highest number of rainy days is August (27.7 days).
The month with the least rainy days is April (2.1 days).

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Average sea temperature in August
Puerto Vallarta, Mexico

Average sea temperature in August - Puerto Vallarta, Mexico
  • Average sea temperature in August: 30.3°C

The best months for swimming (with the highest average sea temperature) are August and September (30.3°C).
The coldest months (with the lowest average sea temperature) are February and March (23.9°C).

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Average daylight in August /
Average sunshine in August
Puerto Vallarta, Mexico

Average daylight in August / Average sunshine in August - Puerto Vallarta, Mexico
  • Average daylight in August: 12h and 5min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in August: 8h and 2min

The month with the most sunshine is May (Average sunshine: 9h and 48min).
The months with the least sunshine are August and September (Average sunshine: 8h and 24min).

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Average sunshine days in August
Puerto Vallarta, Mexico

Average sunshine days in August - Puerto Vallarta, Mexico
  • Average sunshine days in August: 2.7 days

The month with the most sunshine days is April (28.1 days).
The month with the least sunshine days is August (2.7 days).

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Average UV index in August
Puerto Vallarta, Mexico

Average UV index in August - Puerto Vallarta, Mexico
  • Average UV index in August: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October and November (UV index 6).
The month with the lowest UV index is December (UV index 5).

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Average cloud cover in August
Puerto Vallarta, Mexico

Average cloud cover in August - Puerto Vallarta, Mexico
  • Average cloud cover in August: 43

The month with the most cloud cover is August (Cloud cover 43).
The months with the least cloud cover are March and May (Cloud cover 10).

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Average visibility in August
Puerto Vallarta, Mexico

Average visibility in August - Puerto Vallarta, Mexico
  • Average visibility in August: 9km

The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The months with the lowest visibility are July, August, September and October (9km).

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Puerto Vallarta, Mexico

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