September in Mexico City averages highs of 22 °C (72 °F) and lows of 13 °C (55 °F), with about 20 rainy days and 12 h 13 min of daylight.
September weather in Mexico City at a glance
average high to low each dot ≈ 3 rainy days
Is September a good time to visit Mexico City?
Mixed weather: comfortably warm and wet. September is usually low season in Mexico City: rooms are typically easier to find and cheaper.
Our rule: a month scores 2 points for comfortable average highs of 18–28 °C (1 point for 14–18 or 28–32 °C) and 2 points for 5 or fewer rainy days (1 point for 6–10). Average highs above 35 °C or below 8 °C make it a tough month whatever the rain. A rainy day here means 2 mm of rain or more. 4 points = great, 3 = good, 2 = mixed, 0–1 = tough.
Holidays and events in September 2026
- Wed 16 Sep: Independence Day (Día de la Independencia) public holiday
- Independence celebrations on the night of 15 September in the Zócalo event
Banks and many shops close on public holidays, and museums may change their hours, so check before you go.
Things to do in Mexico City in September
With frequent rain in September, here are the indoor picks first, then the outdoor ones for drier spells.
- National Museum of Anthropology — half a day at least indoors
- Frida Kahlo Museum (Casa Azul) — book ahead indoors
- Zócalo and the Templo Mayor outdoors
- Chapultepec Park and Castle outdoors
- Teotihuacán pyramids — early start outdoors
- Xochimilco boats — weekends are livelier outdoors
Where to stay: Roma Norte or Condesa for food and parks; Centro Histórico for sights; Coyoacán for a slower pace.
What to pack for Mexico City in September
- Light layers for the day and a jumper for evenings, which cool to 13 °C (55 °F).
- An umbrella or a light waterproof: about 20 days this month see real rain.
- Comfortable walking shoes.
What a day in Mexico City costs
| Budget traveller | Mid-range | |
|---|---|---|
| Typical total per person, per day | €30–75 | €90–200 |
Excluding flights. September is usually low season in Mexico City: rooms are typically easier to find and cheaper.
September in nearby cities
| City | High / low | Rainy days | Verdict |
|---|---|---|---|
| New York | 25° / 16° | 8 | Good time to go |
| Reykjavik | 10° / 6° | 15 | Tough month |
| Dublin | 17° / 11° | 10 | Mixed weather |
Want the whole trip planned? Join the Journey waitlist: tell it where, when and your budget, and it plans every day hour by hour.
FAQ
Is September a good time to visit Mexico City?
By the numbers, September is a mixed month: comfortably warm and wet, with average highs of 22 °C (72 °F) and about 20 rainy days. September is usually low season in Mexico City: rooms are typically easier to find and cheaper. The best months for weather are January, February, March, November, December.
How warm is Mexico City in September?
Average highs are 22 °C (72 °F) and lows 13 °C (55 °F) (2015–2024 averages).
Does it rain a lot in Mexico City in September?
Expect about 20 days with 2 mm of rain or more, about 213 mm in total. It is the 3rd wettest month of the year in Mexico City.
Sources: climate averages from Open-Meteo historical weather (ERA5 reanalysis, 2015–2024); sea temperatures from the Open-Meteo marine API (2023–2024); public holidays from Nager.Date. Daylight is calculated for the 15th of the month. Averages are a guide, not a forecast. Costs are typical ranges per person per day, excluding flights. In the tropics, reanalysis data tends to count more light-rain days than local weather stations do; rain there often comes as short afternoon downpours.