Mexico Mexico City Weather in September — Climate Guide
September in Mexico City is Good
September is Good for Mexico City.
September is Mexico City's biggest national-holiday month — Mexican Independence Day on September 15-16 brings the year's largest crowds to Zócalo for the Grito de Dolores ceremony on September 15 at 23:00 (the President re-enacts the 1810 cry for independence from a National Palace balcony). 200,000+ Mexicans pack Zócalo, hotels in Centro Histórico and Roma Norte spike +30-50%, and Pujol / Quintonil require 6+ weeks lead time again. The September 16 parade through Reforma is the largest Mexican military parade of the year. Korean Chuseok (varies, often late September) creates a secondary Korean traveler tail — Korean travelers using the 4-5 day Chuseok holiday occasionally pick CDMX for Pujol / Frida pilgrimage. Day of the Dead build-up intensifies — altares appear in most Roma Norte shop windows, Mercado Jamaica fills with cempasúchil marigolds, and Coyoacán starts hosting evening Day of the Dead workshops (sugar skull decoration $20-40, ofrenda-building tutorials).
Travel score
Independence Day Sep 15-16 — biggest national celebration, hotels +30-50%
September Weather at a Glance
September averages 24°C / 75°F highs and 13°C / 55°F lows with 140mm rainfall across 15 rain days (slight improvement from August). Humidity 70%. Sunshine 6 hours daily. UV index 9. Afternoon storms reliable 15:00-19:00. Sunrise 6:30 AM, sunset 6:40 PM.
September Travel Advice
Independence Day (Sep 15 evening Grito at 23:00 from National Palace balcony + Sep 16 daytime military parade through Reforma): book hotels by June (3+ months ahead) for the Sep 14-17 window. Pujol / Quintonil reservations need 6+ weeks ahead. The Grito de Dolores ceremony itself is genuinely worth experiencing — 200,000+ Mexicans pack Zócalo with green/white/red flags, fireworks, and live mariachi; the President's recitation of the names of independence heroes (Hidalgo, Allende, Aldama, Morelos) draws explosive crowd response. Stand in Zócalo by 21:00 for a viewing spot — go in a small group, leave valuables at hotel, use Uber back to Roma Norte / Polanco immediately after the fireworks end (00:00). Sep 16 parade fills Reforma from 09:00-13:00 — best viewed near Auditorio Nacional / Anthropology Museum side. Korean Chuseok travelers: book CDMX hotels by mid-August for late-September arrivals.
Flying In from Overseas
Korean Chuseok creates secondary peak; North American Labor Day (1st Monday) early-month spike; European post-summer return. Direct flights: NYC 5h ($400-900), LAX 4h ($350-700), Miami 3h ($350-700), Madrid 11h ($650-1,200), London 12h ($700-1,300). Korea via LAX or DFW 17-20h ($1,500-2,500 — Chuseok premium late Sep). Japan via Vancouver or LAX 18-22h ($1,800-2,700). Visa-free 180 days. Mexican Independence Day Sep 15-16 is the year's largest CDMX cultural event by attendance — bigger than Day of the Dead by Zócalo footfall.
September Pricing Trends
Independence Day premium Sep 14-17: Four Seasons $700-1,400 (+50% surcharge), Las Alcobas $500-1,000, Ritz-Carlton $450-1,000, Brick Hotel Roma Norte $300-600, Gran Hotel Ciudad de México $400-800 (Zócalo-facing — biggest surcharge). Pujol $150-280 (6+ weeks ahead). Quintonil $130-250 (6+ weeks). La Mar lunch $25-50. Uber Roma-Polanco $5-9 (Sep 15-16 storm + crowd surge 2-3x). Independence Day Zócalo Grito ceremony: free. Sep 16 Reforma military parade: free.
Mexico City September Weather Stats
Avg High
24°C
Avg Low
13°C
Rainy Days
15
140mm total
Sunshine
6h
Daily avg
Humidity
70%
Humid
UV Index
9
Very high
Wind
9 km/h
Gusts 18
Sea Temp
0°C
N/A altitude city
Crowds
Busy
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
25 μg/m³
PM10
50 μg/m³
Status
Moderate
Feels-Like Temperature & Wind
Feels like
Daytime
24°C
Nighttime
13°C
Humidity and wind affect how the actual temperature feels.
Wind
9 km/h
Max gust 18 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- **Mexican Independence Day Sep 15-16 — biggest national celebration**
- Day of the Dead build-up intensifies (altares, marigolds, workshops)
- Korean Chuseok travel alignment (late Sep)
- Rain tapering from August peak (15 vs 17 days)
Cons
- **Hotels +30-50% for Sep 14-17 (Independence Day weekend)**
- Pujol / Quintonil 6+ weeks ahead for Sep 14-17
- 200,000+ Zócalo crowds — Centro Histórico unwalkable Sep 15
- 15 rain days continue
September Events & Festivals
- **Mexican Independence Day (Sep 15 evening Grito de Dolores ceremony + Sep 16 parade)** — biggest national holiday
- Korean Chuseok (varies, often late September)
- Wet-season tail
- Day of the Dead build-up intensifies
Mexico City in September — Full Picture
September is Mexico City's biggest national-holiday month — Mexican Independence Day on September 15-16 brings the year's largest crowds to Zócalo for the Grito de Dolores ceremony on September 15 at 23:00 (the President re-enacts the 1810 cry for independence from a National Palace balcony). 200,000+ Mexicans pack Zócalo, hotels in Centro Histórico and Roma Norte spike +30-50%, and Pujol / Quintonil require 6+ weeks lead time again. The September 16 parade through Reforma is the largest Mexican military parade of the year. Korean Chuseok (varies, often late September) creates a secondary Korean traveler tail — Korean travelers using the 4-5 day Chuseok holiday occasionally pick CDMX for Pujol / Frida pilgrimage. Day of the Dead build-up intensifies — altares appear in most Roma Norte shop windows, Mercado Jamaica fills with cempasúchil marigolds, and Coyoacán starts hosting evening Day of the Dead workshops (sugar skull decoration $20-40, ofrenda-building tutorials).
What to Wear & What to Pack
Wet-season tail — same gear as August. Quick-dry T-shirt + light long pants, waterproof shell, quick-dry shoes, daily umbrella. 15 rain days (slight improvement). One Mexican-flag-color outfit (green/white/red) for Independence Day Zócalo on September 15-16. Festival wear for the Grito de Dolores ceremony at Zócalo (200,000+ attendees).
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
26.7°C
10.7°C
4.7/mo
Summer (Jun·Jul·Aug)
24.3°C
13°C
16/mo
Autumn (Sep·Oct·Nov)
Current23°C
10.7°C
8.3/mo
Winter (Dec·Jan·Feb)
22.7°C
6.3°C
1/mo
Mexico City Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 22° | 6° | 1d·7mm | 7h | 50% | 7 | Moderate | Shoulder |
| February (Best) | 24° | 7° | 1d·5mm | 8h | 45% | 8 | Moderate | Shoulder |
| March (Best) | 26° | 9° | 2d·10mm | 8h | 40% | 10 | Busy | Peak |
| April (Best) | 27° | 11° | 4d·25mm | 8h | 45% | 11 | Busy | Peak |
| 27° | 12° | 8d·60mm | 7h | 50% | 11 | Moderate | Shoulder | |
| 25° | 13° | 14d·130mm | 6h | 65% | 10 | Moderate | Shoulder | |
| 24° | 13° | 17d·170mm | 5h | 70% | 9 | Moderate | Shoulder | |
| 24° | 13° | 17d·160mm | 6h | 70% | 9 | Moderate | Shoulder | |
| 24° | 13° | 15d·140mm | 6h | 70% | 9 | Busy | Peak | |
| October (Best) | 23° | 11° | 8d·60mm | 7h | 60% | 8 | Busy | Peak |
| November (Best) | 22° | 8° | 2d·10mm | 8h | 50% | 7 | Very busy | Peak |
| December (Best) | 22° | 6° | 1d·7mm | 7h | 50% | 7 | Busy | Peak |
View Other Months
Mexico City September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Mexico City?
Mexico City in September is Good. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Mexico City in September?
Mexico City September averages a high of 24°C and a low of 13°C.
Does it rain much in Mexico City in September?
Mexico City September averages 140mm of rainfall over about 15 rainy days.
What should I wear in Mexico City in September?
Wet-season tail — same gear as August. Quick-dry T-shirt + light long pants, waterproof shell, quick-dry shoes, daily umbrella. 15 rain days (slight improvement). One Mexican-flag-color outfit (green/white/red) for Independence Day Zócalo on September 15-16. Festival wear for the Grito de Dolores ceremony at Zócalo (200,000+ attendees).
What time are sunrise and sunset in Mexico City in September?
Mexico City September sunrise is 06:30 and sunset is 18:40, with 12h 10m of daylight.
What's the air quality like in Mexico City in September?
Mexico City September air quality (AQI) averages 70, rated Moderate. PM2.5 averages 25μg/m³.
What activities are recommended in Mexico City in September?
In September, Mexico City is great for **Independence Day Sep 15-16 Grito de Dolores Zócalo + Reforma parade**, Day of the Dead workshops Coyoacán (sugar skull, ofrenda-building), Mercado Jamaica cempasúchil marigold market.
Is September peak season in Mexico City?
Mexico City September crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Mexico City
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.