Mexico Cancún Weather in September — Climate Guide
September in Cancún is low
September is low for Cancún.
September is statistically Cancún's hurricane peak month + year's lowest tourist arrival month. Hotel pricing at year's absolute lowest. The trade-off is real: 30-40% chance of hurricane disruption during any given September week + sargassum reality + daily heavy storms.
Mexican Independence Day (Sept 16) is a national holiday with fireworks over Hotel Zone + downtown parades + cultural festivities. Local Mexican domestic tourism spikes for the holiday weekend.
Travel score
Hurricane peak + lowest pricing + Mexican Independence Day fireworks
September Weather at a Glance
September averages 90°F / 32°C highs and 77°F / 25°C lows with 12 rainy days and 200mm rainfall — wettest month. Humidity 81%. UV 10. Sunshine 7 hours. Sea 29°C. Hurricane risk statistically peak. Heavy storms reliable.
September Travel Advice
Travel insurance with hurricane cancellation + interruption coverage mandatory. NOAA alerts subscription. Hotel hurricane evacuation procedures on check-in. Lowest pricing of year. Mexican Independence Day (Sept 16) weekend: fireworks + parades in downtown + Hotel Zone — book 2-3 weeks ahead.
Flying In from Overseas
Year's lowest international arrivals. Direct flights from NYC $250-400, Toronto $350-600, London $450-700. European autumn shoulder begins. Korean + Japanese visitors minimal.
September Pricing Trends
Year's lowest: Hotel Zone all-inclusive 4-star $130-220/night per couple, Playa Mujeres adult-only $350-700, Ritz-Carlton + Nizuc $400-800. Whale shark tour final $130-180.
Cancún September Weather Stats
Avg High
32°C
Avg Low
25°C
Rainy Days
12
200mm total
Sunshine
7h
Daily avg
Humidity
81%
very-humid
UV Index
10
Very high
Wind
17 km/h
Gusts 32
Sea Temp
29°C
swimming-warm
Crowds
Quiet
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
22 μg/m³
PM10
42 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
36°C
Nighttime
26°C
Humidity and wind affect how the actual temperature feels.
Wind
17 km/h
Max gust 32 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Year's lowest hotel pricing (-50-60% off peak)
- Mexican Independence Day cultural events
- Whale shark season tail
- Restaurant reservation easiest
Cons
- Hurricane peak month statistical risk
- Wettest month (12 rainy days, 200mm)
- Sargassum continues
- Many small dive operators close
September Events & Festivals
- **Hurricane peak month (statistically highest historical strike probability)**
- **Mexican Independence Day (Sept 16 — national holiday, fireworks + parades)**
- Whale shark season closes (end-September)
Cancún in September — Full Picture
September is statistically Cancún's hurricane peak month + year's lowest tourist arrival month. Hotel pricing at year's absolute lowest. The trade-off is real: 30-40% chance of hurricane disruption during any given September week + sargassum reality + daily heavy storms.
Mexican Independence Day (Sept 16) is a national holiday with fireworks over Hotel Zone + downtown parades + cultural festivities. Local Mexican domestic tourism spikes for the holiday weekend.
Whale shark season closes end-September. Cenote diving + MUSA snorkeling between storms still excellent. Travel insurance with hurricane coverage absolutely essential.
What to Wear & What to Pack
Hot + wet + hurricane risk — quick-dry, fully waterproof rain jacket, sandals for wet beach. SPF 50+. Hurricane prep dry bag.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
31.7°C
23°C
5.3/mo
Summer (Jun·Jul·Aug)
33°C
25°C
9.7/mo
Autumn (Sep·Oct·Nov)
Current30.7°C
23.3°C
10.7/mo
Winter (Dec·Jan·Feb)
28.3°C
21°C
6.3/mo
Cancún Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 28° | 21° | 7d·100mm | 8h | 78% | 9 | Very busy | Peak |
| February (Best) | 29° | 21° | 5d·60mm | 9h | 76% | 10 | Very busy | Peak |
| March (Best) | 30° | 22° | 4d·50mm | 9h | 75% | 11 | Very busy | Peak |
| April (Best) | 32° | 23° | 4d·50mm | 10h | 75% | 11 | Busy | Peak |
| 33° | 24° | 8d·130mm | 9h | 76% | 12 | Moderate | Shoulder | |
| 33° | 25° | 10d·150mm | 8h | 80% | 12 | Moderate | Shoulder | |
| 33° | 25° | 9d·130mm | 9h | 80% | 12 | Busy | Peak | |
| 33° | 25° | 10d·140mm | 9h | 80% | 11 | Moderate | Shoulder | |
| 32° | 25° | 12d·200mm | 7h | 81% | 10 | Quiet | Low season | |
| 31° | 23° | 12d·200mm | 7h | 80% | 9 | Quiet | Low season | |
| November (Best) | 29° | 22° | 8d·100mm | 8h | 78% | 8 | Moderate | Shoulder |
| December (Best) | 28° | 21° | 7d·100mm | 7h | 78% | 8 | Very busy | Peak |
View Other Months
Cancún September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Cancún?
Cancún in September is low. Tourist crowds are quiet and flight/hotel prices are low season.
What's the average temperature in Cancún in September?
Cancún September averages a high of 32°C and a low of 25°C.
Does it rain much in Cancún in September?
Cancún September averages 200mm of rainfall over about 12 rainy days.
What should I wear in Cancún in September?
Hot + wet + hurricane risk — quick-dry, fully waterproof rain jacket, sandals for wet beach. SPF 50+. Hurricane prep dry bag.
What time are sunrise and sunset in Cancún in September?
Cancún September sunrise is 06:00 and sunset is 18:30, with 12h 30min of daylight.
What's the air quality like in Cancún in September?
Cancún September air quality (AQI) averages 55, rated Moderate. PM2.5 averages 22μg/m³.
What activities are recommended in Cancún in September?
In September, Cancún is great for Mexican Independence Day Hotel Zone fireworks, Hotel pool + spa days, Cenote + indoor museums.
Is September peak season in Cancún?
Cancún September crowds are quiet and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit Cancún
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.