Puerto Vallarta Weather in September
With daytime temperatures of 29°C (84°F) and nighttime lows of 23°C (73°F), September in Puerto Vallarta brings high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Puerto Vallarta in September
As part of the rainy season, Puerto Vallarta sees around 17 days of rain in September, with an average of 357 mm (14 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.
Temperature in Puerto Vallarta in September
Temperatures in Puerto Vallarta in September top out at 29°C (84°F) and drop to 23°C (73°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 23°C (73°F), evenings stay pleasantly warm.
Average water temperature in September
With water at 30°C (86°F), conditions are warm and calm. Perfect for those who like tropical water temperatures, though it won't cool you down much.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Puerto Vallarta. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Puerto Vallarta's climate page.
Puerto Vallarta Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
29°C (84°F)
Water Temperature
30°C (86°F)
Chance of Rain
58%
Precipitation
357 mm (14 in)
Rainy days
17 days
Humidity
70%
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Puerto Vallarta typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Historical weather for Puerto Vallarta in September
Browse day-by-day weather records for Puerto Vallarta spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Puerto Vallarta historical weather extremes in September
Based on 39 years of weather observations in Puerto Vallarta between 1986 and 2025, these are the recorded extremes.
- The warmest day in September was on September 15, 2005, with a maximum of 36°C (97°F).
- The lowest daytime temperature in September was 25°C (77°F), recorded on September 8, 2021.
- The coldest night in September in Puerto Vallarta was on September 3, 2019, with a minimum of 17°C (63°F).
Best Places in Mexico in September
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in September →
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What to Wear in Puerto Vallarta in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. With water temperatures around 30°C (86°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes.What To Do in Puerto Vallarta in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Puerto Vallarta's climate page.
Temperature Rainfall Humidity Water Temp
See the full Puerto Vallarta climate overview or explore weather in Mexico.
