Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September commences with an average high-temperature of a still moderately hot 28.5°C (83.3°F), showing little deviation from August's 29.3°C (84.7°F). In September, Nuevo Vallarta reports a consistent average low-temperature of 21.8°C (71.2°F) during the nights.Heat index
September's heat index is computed to be a tropical 34°C (93.2°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.Always consider that heat index estimations are for light winds and places in the shade. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
The months with the highest humidity are August and September, with an average relative humidity of 84%.Rainfall
In Nuevo Vallarta, in September, it is raining for 24.4 days, with typically 144mm (5.67") of accumulated precipitation. In Nuevo Vallarta, during the entire year, the rain falls for 153.3 days and collects up to 735mm (28.94") of precipitation.Daylight
In Nuevo Vallarta, Mexico, the average length of the day in September is 12h and 15min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:49 pm CST.
Sunshine
The months with the least sunshine in Nuevo Vallarta are August and September, with an average of 8.4h of sunshine.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 exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What are the most humid months?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Nuevo Vallarta have in September?
When are sunrise and sunset in September?
What are the months with the least sunshine?
How many hours of sunshine does Nuevo Vallarta have in September?
What is the month with the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Nuevo Vallarta, Mexico
- Average high temperature in September: 28.5°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 September: 21.8°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).
Average pressure in September
Nuevo Vallarta, Mexico
- Average pressure in September: 1010.9mbar
The month with the highest atmospheric pressure is January (1014.7mbar).
The month with the lowest atmospheric pressure is September (1010.9mbar).
Average wind speed in September
Nuevo Vallarta, Mexico
- Average wind speed in September: 5.8km/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).
Average humidity in September
Nuevo Vallarta, Mexico
- Average humidity in September: 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%).
Average rainfall in September
Nuevo Vallarta, Mexico
- Average rainfall in September: 144mm
The wettest month (with the highest rainfall) is August (167mm).
The driest month (with the least rainfall) is April (1mm).
Average rainfall days in September
Nuevo Vallarta, Mexico
- Average rainfall days in September: 24.4 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).
Average daylight in September /
Average sunshine in September
Nuevo Vallarta, Mexico
- Average daylight in September: 12h and 2min
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 September: 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).
Average sunshine days in September
Nuevo Vallarta, Mexico
- Average sunshine days in September: 4 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).
Average UV index in September
Nuevo Vallarta, Mexico
- Average UV index in September: 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).
Average cloud cover in September
Nuevo Vallarta, Mexico
- Average cloud cover in September: 42
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).
Average visibility in September
Nuevo Vallarta, Mexico
- Average visibility in September: 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).
Nuevo Vallarta, Mexico
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