Measurements:
°C
°F
Nuevo Vallarta
72°F
W 4 mph
Feels like: 72°F
Precip: 0%
World Resorts Mexico Nuevo Vallarta Weather September Weather in Nuevo Vallarta

Nuevo Vallarta Weather: September

Average Day Temperature: 89.9°F
Average Night Temperature: 79.1°F
Sea Water Temperature: 90.7°F
Number of Sunny Days: 3 days
Sunshine Hours: 12.0 - 12.5 hours
Number of Rainy Days: 9 days
Precipitation Totals: 4.7 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 97°F. The lowest night temperature was 77°F. The average values for day and night temperatures during September were 89.0°F и 80.8°F respectivly.

Nuevo Vallarta Water Sea Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Nuevo Vallarta was 90.9°F. The maximum and minimum values were 90.4°F and 92.0°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are gloomy but you can also expect sunny days.

Precipitation Totals in September, in

Precipitation total in September for Nuevo Vallarta is 4.7 in. It makes september the most rainy month of the year.

Wind Speed in September, mph

The average wind speed in September is 3.0 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Nuevo Vallarta in September is 4.9 hours.

Best Time to Visit Nuevo Vallarta
The most sunny months:
May 27 days
March 26 days
April 24 days
The most warm months:
May 94.0 °F
June 91.1 °F
July 90.8 °F
Warmest sea temperature:
August 90.9 °F
September 90.7 °F
July 90.5 °F
The most cold months:
January 84.9 °F
February 85.7 °F
December 86.5 °F
The most rainy months:
September 9 days
August 8 days
July 7 days
The most windy months:
May 4 mph
April 4 mph
March 4 mph

Nuevo Vallarta on the Weather Map

24 Hours Weather Forecast
Nuevo Vallarta
Local time: 02:07
05 dec, friday
0300 72°F
W
4 mph
0600 72°F
W
3 mph
0900 78°F
W
3 mph
1200 80°F
NE
2 mph
1500 80°F
NE
6 mph
1800 78°F
NE
2 mph
2100 76°F
S
2 mph
06 dec, saturday
0000 76°F
SW
3 mph