September in Puerto Vallarta brings a side of the destination most visitors never see. The Sierra Madre waterfalls are running at full force, the jungle canopy is impossibly green, and Mexican Independence Day transforms the Malecón into one giant celebration with fireworks, mariachi, and street tacos. The ocean stays warm enough for easy snorkeling, and the snorkeling conditions are still swimsuit-friendly. Mornings break clear and golden, and the whole region feels alive in a way that only the rainy season delivers. This is Puerto Vallarta at its most vibrant.
This guide covers what to expect from September's weather, what to bring for everything from jungle ziplines to upscale dinners, and how to make the most of your trip without overstuffing your suitcase.
What to Expect from September Weather in Puerto Vallarta
Rainy-season peak is the best way to describe September, but the weather follows a predictable rhythm that makes planning straightforward once you understand the pattern. Mornings tend to be clear and warm, afternoons bring brief but intense downpours, and evenings settle back into comfortable warmth. Here's what the numbers look like:
Average temperatures: Daytime highs reach 83–90°F (28–32°C), while nighttime lows stay mild at 72–76°F (22–24°C). The temperature holds steady throughout the month with little variation day to day.
Rainfall: September is Puerto Vallarta's wettest month, averaging 13.4–15.9 inches (340–404mm) across 17–20 rainy days. That translates to roughly an 81–82% chance on any given day; these aren't all-day drizzles. Rain arrives in short, powerful afternoon bursts that usually clear within an hour.
Humidity: Expect 86–90% average humidity, peaking with a noticeable morning humidity drop by afternoon. That humidity is why having duplicate swimsuits and quick-dry fabrics matters; clothes simply won't dry overnight.
Sea temperature: The water sits at a bathtub-like 83–84°F (28–29°C), perfect for snorkeling, paddleboarding, and swimming without a wetsuit.
Daylight hours: You'll get a full 12 hours of daylight. Sunrise and sunset start around 6:45 AM and 7:13 PM in early September, shifting closer to 6:52 AM and 6:49 PM by month's end. That gives you a solid window for morning and early afternoon activities before the typical rain rolls in.
Essential Packing List for Puerto Vallarta in September
Some items belong in your bag regardless of when you visit: passport, charger, sunglasses. But September's combination of tropical rain, high humidity, and warm-water adventures calls for a few smart additions that will keep you comfortable whether you're hiking to a waterfall or dancing on the Malecón for Independence Day.
Travel Documents & Money
- Passport (valid for 6+ months)
- Physical copies of passport/ID
- Travel insurance documents
- Mexican pesos (cash)
- Credit cards (notify bank of travel)
- Emergency cash in USD
- Waterproof document pouch
Electronics & Power
- Phone charger + car charger
- Portable power bank (high capacity)
- Universal power adapter
- Waterproof phone case
- Camera + extra memory cards
- Headphones/earbuds
- Headlamp or small flashlight (for occasional power outages during storms)
- Silica gel packets for electronics cases (humidity protection)
Health & Safety
- Prescription medications (extra supply)
- Basic first aid kit
- DEET or Icaridin-based insect repellent
- Hand sanitizer
- Sun-protective clothing (UPF-rated shirts and hats)
- After-sun care/aloe vera
- Anti-fungal foot powder
Practical Items
- Plastic bags for wet/dirty clothes
- Travel-sized laundry detergent
- Quick-dry towel (microfiber)
- Reusable water bottle
- Waterproof dry bag for day trips
- Water-resistant packing cubes
- Compression bags for wet/dry separation
- Ventilated rain jacket (lightweight, packable)
Clothing and Accessories
- Multiple swimsuits (2–3 recommended — essential since humidity prevents overnight drying)
- Lightweight, breathable synthetic t-shirts/tank tops (avoid cotton)
- Shorts and swim shorts (quick-dry fabrics)
- Underwear (quick-dry recommended)
- Sleepwear/pajamas
- Beach cover-ups or sarongs
- Light layers for air-conditioned spaces
- Water-resistant hiking pants for adventure tours
- Dressy outfits for upscale restaurants/nightlife
- Collared shirt for men (required at formal restaurants)
- Sun hat with a chin strap
- Sunglasses with a strap
- UV-protective rash guard
Footwear
- Flip-flops or comfortable sandals for the beach and pool
- Slip-proof waterproof sandals for rainy days
- Comfortable walking shoes for exploring cobblestone streets and marina boardwalks
- Sturdy, closed-toe shoes for adventure tours (mandatory for zipline and ATV experiences)
- Extra pair of shoes (your tour shoes will get muddy)
- Multiple pairs of quick-dry socks
Top Clothing and Footwear Suggestions for September
September's high humidity and afternoon rain define every clothing choice you'll make. Quick-dry synthetic fabrics are non-negotiable; cotton stays damp and can develop mildew in tropical conditions. Pack light, pack duplicates, and leave anything that can't handle getting wet at home.
Stay Dry, Stay Cool: Ventilated rain jacket, synthetic quick-dry shorts, moisture-wicking tank tops, water-resistant hiking pants, UPF-rated long-sleeve shirts
Ocean Ready: Multiple swimsuits (they won't dry overnight), UV-protective rash guards, beach cover-ups, waterproof sandals with grip
Evening Comfort: Light cardigan or linen jacket for air-conditioned restaurants, casual dresses in breathable fabrics, lightweight pants, stylish closed-toe shoes for cobblestone streets
Puerto Vallarta Nightlife Considerations for September
Puerto Vallarta's nightlife stretches across two main zones, each with its own energy. The Malecón boardwalk draws the high-energy crowd to spots like La Vaquita and Mandala, while the Romantic Zone offers a more relaxed scene with rooftop bars like Twisted Palms and dance-friendly venues like Co-De.
We suggest packing a couple of versatile dressy outfits, comfortable shoes that can handle both dancing and cobblestones, a light layer for air-conditioned interiors, and a small crossbody bag that keeps your hands free. If you're planning a milestone dinner, note that upscale restaurants like The Iguana at Casa Kimberly require collared shirts and prohibit flip-flops, tank tops, and beachwear.
September's biggest nightlife event is Independence Day, centered around September 14–16. The festivities kick off with the Charro Day parade on September 14, build to the traditional Grito ceremony and fireworks on the night of September 15, and carry through September 16 with the Taco Fair at Lázaro Cárdenas Park in the Romantic Zone.
Bars and clubs host special themed parties during this stretch, and the energy downtown is electric. Book restaurant reservations early for this period, especially at upscale venues, as locals and visitors come together for Mexico's most important national holiday.
Top September Experiences and What You'll Need
September unlocks a few things that aren't available year-round. The rainy season fills Puerto Vallarta's waterfalls to their peak flow, turns the Sierra Madre jungle electric green, and adds muddy off-road challenges that make adventure tours even more exciting. These three experiences showcase the best of what the month has to offer.
Yelapa Waterfall and Majahuitas BBQ
The Cola de Caballo waterfall in Yelapa is only accessible from July through December, and September's rainfall keeps it flowing at its most dramatic. This 7.5-hour boat adventure takes you south across Banderas Bay to two coves that are only reachable by water. The first stop is Yelapa, a charming fishing village where cobblestone streets wind past colorful murals and local artisan shops before a guided walk leads to the seasonal waterfall. From there, you cruise to Majahuitas, a hidden beach where some of the area's best snorkeling meets paddleboarding, kayaking, and banana boat rides. A beach barbecue lunch with ribs, grilled chicken, and fresh ceviche rounds out the afternoon.
What you'll need for this tour: Swimsuit and towel, comfortable walking shoes for the village, sun-protective clothing (UPF swim shirt/rash guard), and extra cash for dock fees and souvenirs.
All Terrain ATV Tour
September's rain transforms the Sierra Madre trails into a muddy, adrenaline-fueled playground. This half-day Polaris RZR UTV adventure takes you to a private reserve in the heart of the Sierra Madre, approximately six miles south of Puerto Vallarta. Your day starts with a ride in a Mercedes Unimog to the UTV track, where you'll receive a safety briefing before gearing up with goggles and a helmet and hopping aboard your own 4x4 Polaris RZR. From there, you'll blaze through exclusive off-road trails that wind through breathtaking tropical forest, tackling steep hills, sharp turns, and stream crossings along the way. About halfway through, you'll park the UTV and hike to a hidden waterfall where you can take a refreshing swim in a natural pool surrounded by jungle. After cooling off, you're back on the trails for more off-roading before the day wraps up. The vehicles are designed for entry-level to experienced drivers, so no prior off-road experience is necessary. A valid driver's license is required for all drivers.
What you'll need for this tour: A complete change of clothes (you will get dusty and muddy), valid driver's license, closed-toe shoes, swimsuit for the waterfall swim, sunglasses, sunscreen, and insect repellent.
Pre-Departure Preparation Timeline
2–3 Weeks Before Departure
Digital Preparation
- Download offline maps of Puerto Vallarta, Sayulita, and surrounding areas
- Create a trip playlist for different moods
- Download translation apps to learn basic Spanish phrases
- Research weather patterns for your specific travel dates
- Book accommodations and activities
- Reserve popular tours (booking 72+ hours early saves 30%)
Cultural and Culinary Research
- Look up must-try dishes: street tacos, ceviche, Yelapa pie
- Check September 14–16 Independence Day event schedules
- Learn basic Spanish phrases for food ordering and greetings
Documentation and Backup
- Verify passport expiration date (must be valid 6+ months)
- Scan and email copies of passport, ID, and travel insurance
- Print physical copies of important documents
- Confirm travel insurance coverage
- Compile emergency contact information
24 Hours Before Departure
- Check the weather forecast updates for your arrival week
- Confirm offline maps are downloaded
- Charge all electronics and power banks
- Pack carry-on essentials separately
Airport and Travel Day
- Comfortable travel outfit in breathable fabrics
- Entertainment for flight
- Empty reusable water bottle
- Snacks for travel day
- Important documents in carry-on (not checked luggage)
You're All Set for Puerto Vallarta in September
A little planning goes a long way toward turning September's rainy season from a question mark into your biggest advantage. Quick-dry fabrics, a packable rain jacket, and an extra pair of shoes handle the weather. Duplicate swimsuits and waterproof bags handle the humidity. And everything else, from the full-force waterfalls to the Independence Day fireworks to the warm ocean and green jungle, handles itself. You'll spend less time worrying about what you forgot and more time watching sea turtle releases or ziplining above a canyon with water rushing below.
September's combination of seasonal waterfalls, cultural celebrations, and fewer visitors means popular tours fill up faster than you might expect. The Independence Day weekend draws both local and international visitors, and adventure experiences with smaller group sizes book out early. Lock in your dates, pack that rain jacket, and get ready for a Puerto Vallarta that most people never get to see.
