September is the most Mexican month of the year and the least touristed. It is el mes de la patria – independence month – culminating in El Grito on the night of 15 September and Independence Day on Thursday 16 September 2027. It is also the wettest month, the peak of hurricane season, and the reason hotel rates across the country are at their annual floor.
El Grito and Independence Day
Mexico’s national day is not a parade in the morning; it is a shout at night. On the evening of Wednesday 15 September 2027, the President appears on the balcony of the National Palace in Mexico City’s Zócalo, rings the bell and repeats the Grito de Dolores – the 1810 call to independence – and the crowd answers. Every town in Mexico does the same in its own plaza, led by its mayor, at around 23:00.
Thursday 16 September is the public holiday, with a military parade through the Zócalo in the morning.
Practical notes:
- The Zócalo fills to capacity and is closed off with security screening; arrive hours early or watch from a smaller town, which many people prefer.
- Everything is red, white and green for a fortnight beforehand, and September food – chiles en nogada above all – is one of the best reasons to be in Mexico now.
- Banks, offices and government sites close on the 16th; restaurants and attractions largely stay open.
Weather: the wettest month
- Mexico City and the central highlands – around 24°C by day and 13°C at night, with roughly 145 mm of rain. Storms are heavier and can arrive earlier in the day than in July and August.
- Oaxaca and the south – green and wet, comfortable between showers.
- The Yucatán and Caribbean – about 31°C, humid, and the wettest month on the peninsula. Sargassum is usually declining.
- The Pacific coast – the wettest and most storm-exposed month; many small operators simply close.
- Baja California – hot and dry, but the southern tip (Los Cabos) is the most hurricane-exposed part of the country in September.
Hurricanes: the peak
September is the statistical peak of both the Atlantic and the Pacific seasons. Being straightforward about it: this is the month when a storm is most likely to disrupt a Mexican trip, and Los Cabos, the Yucatán coast and the Pacific resorts are the most exposed.
That said, the overwhelming majority of September visitors see nothing worse than heavy rain. The response is preparation rather than avoidance:
- Take travel insurance that explicitly covers weather disruption.
- Keep a spare day before an international flight.
- Prefer refundable bookings on the coast.
- Consider the highlands – Mexico City, Puebla, Oaxaca, Guanajuato – which are essentially unaffected by hurricanes.
The earthquake anniversaries
Mexico City marks 19 September each year with a national earthquake drill, commemorating the 1985 and 2017 earthquakes that both fell on that date. Sirens sound across the city and buildings evacuate. It is a drill, and if you are there it is worth knowing in advance rather than being startled by it.
What September is good for
- Price. The cheapest month of the Mexican year almost everywhere, on both coasts and in the interior.
- Atmosphere. Independence month is the best time to see Mexico being itself rather than hosting visitors.
- Food. Chiles en nogada – poblano chillies in walnut cream with pomegranate, in the national colours – are a seasonal dish that peaks now.
- Space. Ruins, museums and colonial cities are at their emptiest.
- The autumn equinox at Chichén Itzá, around 22–23 September, when the shadow serpent descends El Castillo.
Prices and crowds
At their lowest. International arrivals are minimal, Mexican schools are back, and coastal resorts discount aggressively to fill rooms during hurricane season. The only busy dates are 15–16 September in the cities and the equinox at Chichén Itzá.
See how much a trip to Mexico costs.
What to pack
A proper rain shell rather than only an umbrella, quick-drying clothes and shoes, insect repellent, and a warm layer for highland evenings. If you are on the coast, keep documents in something waterproof. See the Mexico packing list.
The September 2027 calendar
- From 1 September – the month of the patria; national colours everywhere and chiles en nogada on every menu.
- Wednesday 15 September – El Grito, around 23:00, in the Zócalo and in every town plaza in Mexico.
- Thursday 16 September – Independence Day, a public holiday, with a military parade in Mexico City.
- Sunday 19 September – the national earthquake drill, marking the 1985 and 2017 earthquakes.
- Around 22–23 September – the autumn equinox serpent shadow at Chichén Itzá.
- Through September – the peak of hurricane season on both coasts, and the wettest month of the year.
- Late September – the whale-shark season ends off Isla Mujeres and Holbox.
Read alongside
- Mexico in August – peak whale sharks and the end of the domestic summer.
- Mexico in October – the rains ending and Day of the Dead approaching.
- Best time to visit Mexico – all twelve months compared.
- How much a trip to Mexico costs – the cheapest month’s numbers.
- Things to do in Mexico City – the city that owns this month.
- Mexico travel guide – regions, routes and how to combine them.
- Is Mexico safe for travel – including weather and practical risk.
Frequently asked
When is Mexican Independence Day?
16 September – a Thursday in 2027 – and it is a public holiday. The main event is the night before: El Grito, at around 23:00 on 15 September, in the Zócalo and in every town plaza in the country.
Is September a good time to visit Mexico?
For price and atmosphere it is excellent – the cheapest month of the year, the emptiest sites and the best national celebrations. The cost is the weather: it is the wettest month and the peak of hurricane season.
Is September the worst month for hurricanes in Mexico?
Statistically yes, on both coasts. Los Cabos, the Yucatán coast and the Pacific resorts are most exposed; the central highlands are essentially unaffected. Most visitors see nothing worse than heavy rain.
How much does it rain in Mexico in September?
Mexico City gets roughly 145 mm and the Yucatán more, in heavier storms that can arrive earlier in the day than in midsummer. It is the wettest month of the Mexican year.
What is Cinco de Mayo versus 16 September?
Cinco de Mayo marks the 1862 Battle of Puebla and is a minor date in Mexico. 16 September is Independence Day, the real national holiday, and the celebration that matters.
Can you see the equinox at Chichén Itzá in September?
Yes, around 22–23 September, when the late-afternoon light throws a serpent-shaped shadow down the staircase of El Castillo. Crowds are large on those days but far smaller than at the March equinox.
Is Mexico cheap in September?
It is the cheapest month of the year almost everywhere. International arrivals are minimal, Mexican schools are back, and coastal resorts discount hard to fill rooms during hurricane season.
What is the earthquake drill on 19 September?
A national drill held every 19 September, marking the 1985 and 2017 earthquakes that both struck on that date. Sirens sound across Mexico City and buildings evacuate. It is planned, not an emergency.
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Written by
John Morrison is the founder and lead travel writer at Packzup. Over the past decade he has explored destinations across Africa, the Americas, Asia, Europe, the Middle East, and Oceania — always self-funded, never on a press trip.
