September 20 sees frequent showers in Cancún. Historical data shows a 52% chance of rain, so pack accordingly. Temperatures average 30°C. Take advantage of the off-peak calm in Cancún to see the sights without the usual crowds.
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Essential Travel Info for Cancún
Currency
MXN
$ Mexican peso
Language
Spanish
Driving
Right side
Connect
High-speed wireless internet (5G) is wid...
Safety
Travel Precautions
GPI: 2.612
Cancún Weather Forecast for September 20
"Rainy & Overcast. Expect average highs of 29.9°C. 52% chance of rain."
What to Wear in Cancún in September
Based on historical data for September 20, Cancún typically experiences temperatures between 25.6°C and 29.9°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 52% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Cancún
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
29.9°C
Daytime Peak
Average Low
25.6°C
Nighttime Low
Feels Like
38.2°C
🔥 Heat index effect
Rain Chance
52%
Avg 4.3mm if it rains
Cloud Cover
57%
Light drizzle
Pressure
1012 hPa
Low volatility
Cancún Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 94% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
06:00 - 10:00
16:00 - 18:00
Type I-II
🔴 24 min to burn
Type III-IV
🟡 36 min to burn
Type V-VI
🟢 60 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
26.7°C
Humid/Sticky
Heat Index
38.2°C
Feels hotter
😕 Best outdoor time:
Morning hours (before 11 AM)
Marine Conditions
Jellyfish Warning
High water temps may attract jellyfish swarms.
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Mexico
Flight Traffic
Quiet
22/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~64
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Cancún
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:36
☀️ Noon
12:42
🌇 Sunset
18:47
⏱️ Daylight
12h 10m
Wind Speed
15.2 km/h
Gentle breeze
Sunshine
10.2 hrs
Direct Sun (Cloud-free)
Humidity
83%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Cancún
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Cancún
Travel Comfort Index
Real-time tourism conditions
Weather Quality
🌧️ Variable
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Mild discomfort possible for arthritic conditions.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
Atlantic Hurricane Risk
Season: Jun - Nov
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Cancún on September 20 averages 29.9°C with a 52% precipitation probability. Wedding/Outdoor Event Score: 77/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Cancún Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 19
30°C • 48% rain
Score
79
September 15
30.1°C • 49% rain
Score
78
September 18
30°C • 49% rain
Score
78
💡 Moving your event by a few days could significantly improve weather conditions
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Same date (September 20) in other destinations
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🌍 Explore the same date in different destinations around the world
📍 Is Cancún Worth Visiting on September 20?
Planning a trip to Cancún on September 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 29.9°C with a 52% historical precipitation risk.
✈️ Travel Logistics: Approximately 64 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 9 vaccinations are recommended for Mexico, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 29.5°C (hot soup). Wave conditions are generally fun waves with heights around 0.68m.
📊 Historical Extremes: The hottest September 20 recorded in the last 30 years saw temperatures hit 32.7°C in 2023, while the coldest dropped to 23.4°C in 2024.