Mexico City weather in September
Mexico City in September averages 19°C (65°F), 144 mm of rain and 4.9 hours of sun a day.
Of the twelve months in Mexico City, September is the sixth coldest, the third wettest and the dullest.
- Average temp
- 19°C (65°F)
13–24°C · 56–75°F
- Rainfall
- 144 mm
Showers likely
- Sunshine
- 4.9 h
hours per day
What is Mexico City like in September?
Daytime
Days are mild.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Mexico City in September?
A light rain jacket
About 144 mm falls this month — showers rather than washouts.
A layer for the evening
The day swings about 11°C between its low and its high.
September compared with August and October
September in Mexico City is about the same temperature as August and 42 mm drier than it, which averages 19°C (66°F).
September in Mexico City is 1°C warmer than October and 65 mm wetter than it, which averages 18°C (64°F).
Daylight in Mexico City in September
On 15 September the sun is up for 12 hours 14 minutes in Mexico City, rising about 06:24 and setting about 18:38 local time.
September ends 31 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 1 hour 4 minutes short of June, the longest-lit month here.
Where to stay in Mexico City
Dates are a starting point for September.
Travel guides for Mexico City
What to read before you book.
Mexico City weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 15°C / 59°F | 7 mm |
| February | 17°C / 63°F | 3 mm |
| March | 19°C / 66°F | 19 mm |
| April | 21°C / 69°F | 27 mm |
| May | 21°C / 69°F | 53 mm |
| June | 20°C / 68°F | 127 mm |
| July | 19°C / 66°F | 176 mm |
| August | 19°C / 66°F | 186 mm |
| September | 19°C / 65°F | 144 mm |
| October | 18°C / 64°F | 79 mm |
| November | 16°C / 61°F | 10 mm |
| December | 16°C / 60°F | 9 mm |
Check another month
This is the month you are reading. Change either side to look at another.
FAQs about Mexico City in September
September climate averages for Mexico City, 1991–2020.
Mexico City averages 19°C (65°F) in September, ranging from about 13°C (56°F) at night to 24°C (75°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 144 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 19°C (65°F) against 18°C (64°F) in October — 1°C warmer.
September is about as warm as August, and 42 mm drier.
It is outside the easiest window. The most comfortable stretch here is February to May; September sits outside it, which usually means more heat, more rain, or both — worth it if you would rather have the place to yourself.
About 4.9 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 14 minutes of daylight in mid-September, against 13 hours 18 minutes in June and 10 hours 58 minutes in December.
On 15 September, sunrise is about 06:24 and sunset about 18:38 local time. Both shift across the month — the month ends 31 minutes shorter than it starts.
