Puerto Vallarta weather in September

In September, Puerto Vallarta sees average daytime highs of 27°C and overnight lows near 22°C, with 333 mm of rain across 28.3 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 4% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Puerto Vallarta's 12th-clearest and 10th-windiest month. For the whole year in context, see Puerto Vallarta's year-round climate.

Daytime high
27°
6th warmest
Overnight low
22°
10th coldest
Rainfall
333 mm
28.3 wet days
Daylight
12 h 06 min
6:52 AM – 6:59 PM
Cloud cover
83%
12th clearest
Wind
4 km/h
10th windiest
Solar energy
4.39 kWh/m²
Travel score
3.5
out of 10

Puerto Vallarta is municipal seat of Puerto Vallarta, State of Jalisco, Mexico.

Density
4,311/km²
people per km²
Founded
1851

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Puerto Vallarta reaches about 27°C in the afternoon and slips back to 22°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12822
22822
32822
42722
52722
62722
72722
82722
92722
102722
112722
122722
132722
142722
152722
162722
172722
182722
192722
202722
212722
222722
232722
242722
252722
262822
272822
282822
292822
302822

Puerto Vallarta weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 16°34310.98.2
Feb26° / 16°24211.38.4
Mar27° / 17°100.911.98.5
Apr28° / 18°40.612.57.9
May29° / 20°163136.8
Jun28° / 22°20018.813.24.7
Jul28° / 22°28528.613.13.6
Aug28° / 22°34229.812.73.4
Sep27° / 22°33328.312.13.5
Oct27° / 21°1491911.55.2
Nov27° / 19°355.4117.6
Dec25° / 17°252.910.88.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 85%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11189
21189
31189
41288
51288
61288
71288
81288
91288
101288
111387
121486
131486
141387
151387
161387
171387
181486
191486
201486
211486
221585
231783
241882
252080
262179
272278
282377
292575
302872

Chance of precipitation in September

Any precipitation

Puerto Vallarta gets around 333 mm of rain over 28.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 93% and peaks near 96% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
196
296
396
496
596
696
795
895
995
1094
1194
1294
1394
1494
1594
1694
1794
1894
1994
2094
2193
2293
2393
2492
2592
2691
2790
2889
2988
3087

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 85% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
11486
21486
31585
41585
51585
61585
71684
81684
91684
101684
111585
121585
131585
141486
151486
161486
171387
181387
191387
201387
211387
221387
231387
241387
251387
261387
271486
281486
291585
301684

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over September. Sunrise moves from 6:48 AM to 6:55 AM, and sunset from 7:13 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:487:13
212.46:487:12
312.46:497:11
412.46:497:10
512.36:497:09
612.36:497:08
712.36:507:07
812.36:507:06
912.36:507:06
1012.26:507:05
1112.26:517:04
1212.26:517:03
1312.26:517:02
1412.26:517:01
1512.16:527:00
1612.16:526:59
1712.16:526:58
1812.16:526:57
1912.16:526:56
2012.06:536:55
2112.06:536:54
2212.06:536:53
2312.06:536:52
2412.06:546:51
2511.96:546:50
2611.96:546:49
2711.96:546:48
2811.96:556:47
2911.96:556:46
3011.86:556:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.39 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.39 kWh/m² to a high of 7.3 kWh/m² in May across the year — September's 4.39 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.5Bright
Planning a trip in September

Hazard calendar for Puerto Vallarta

In seasonPeak

In September, Puerto Vallarta sits inside its pacific hurricane and monsoon season. The full year is below, with each hazard's peak months called out.

Puerto Vallarta sits in the eastern Pacific hurricane zone; the season peaks August–September.

Puerto Vallarta's monsoon runs June–September, when most of the year's rain falls.

Pacific hurricane
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Puerto Vallarta?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.5
Sightseeing
11th-best month of the year
3.7
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Puerto Vallarta.

What to pack for Puerto Vallarta in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Puerto Vallarta sees daytime highs around 27°C and nights near 22°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

Sea temperature near Puerto Vallarta in September

The nearest coast averages about 30°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in August at about 30°C and coldest in March near 24°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb24Warm
Mar24Warm
Apr25Warm
May26Warm
Jun28Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov28Tropical
Dec26Warm

UV index in Puerto Vallarta in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Puerto Vallarta peaks around May 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 6 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighMay 11UV 13Dec 16UV 6
UV index (midday)Level
Jan7High
Feb10Very high
Mar11Extreme
Apr12Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep12Extreme
Oct10Very high
Nov7High
Dec6High

Air quality in Puerto Vallarta in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Puerto Vallarta is worst in May — around 49 µg/m³ PM2.5 (poor), about 7.7× the cleanest month (January, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodMay 1846 µg/m³Jan 156 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar8Good
Apr19Moderate
May49Poor
Jun28Moderate
Jul11Good
Aug9Good
Sep9Good
Oct8Good
Nov7Good
Dec7Good
Location & terrain

Where is Puerto Vallarta?

Puerto Vallarta sits at 20.6°N, 105.2°W, 21 m above sea level, in Mexico. The nearest listed city is Ixtapa, 11 km away.

Topography around Puerto Vallarta

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Puerto Vallarta.

Within 3 km, the terrain around Puerto Vallarta has large variations in elevation — a maximum elevation change of 635 m around an average of 84 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,878 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,708 m.

The land around Puerto Vallarta is covered by water (38%), trees (36%) and artificial surfaces (24%) within 3 km, trees (51%) and water (31%) within 16 km, and trees (57%) and water (31%) within 80 km.

3 km
635 m
16 km
1,878 m
80 km
2,708 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Ixtapa 11 km · Mezcales 14 km · San José del Valle 16 km · Bucerías 19 km · Sayulita 35 km · Compostela 77 km · El Salto 82 km · Xalisco 98 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Puerto Vallarta (20.617°, -105.2302°, elevation 21 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).