Mexico weather in September
Mexico in September averages 17°C (63°F), 106 mm of rain and 7 hours of sun a day.
Of the twelve months in Mexico, September is the sixth warmest, the second wettest and the dullest.
- Average temp
- 17°C (63°F)
11–24°C · 52–75°F
- Rainfall
- 106 mm
Showers likely
- Sunshine
- 7 h
hours per day
What is Mexico 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 in September?
A light rain jacket
About 106 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around 11°C (52°F).
September compared with August and October
September in Mexico is 1.1°C cooler than August and 12 mm wetter than it, which averages 19°C (65°F).
September in Mexico is 1.4°C warmer than October and 69 mm wetter than it, which averages 16°C (61°F).
Daylight in Mexico in September
On 15 September the sun is up for 12 hours 16 minutes in Mexico, rising about 06:36 and setting about 18:53 local time.
September ends 39 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 19 minutes short of June, the longest-lit month here.
Travel guides for Mexico
What to read before you book.
Mexico 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 | 12°C / 53°F | 10 mm |
| February | 13°C / 56°F | 11 mm |
| March | 16°C / 60°F | 4 mm |
| April | 19°C / 66°F | 2 mm |
| May | 20°C / 68°F | 9 mm |
| June | 20°C / 68°F | 61 mm |
| July | 19°C / 65°F | 109 mm |
| August | 19°C / 65°F | 94 mm |
| September | 17°C / 63°F | 106 mm |
| October | 16°C / 61°F | 37 mm |
| November | 14°C / 57°F | 12 mm |
| December | 12°C / 54°F | 10 mm |
Similar weather in September
Other destinations whose September averages sit close to this one.
Check another month
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FAQs about Mexico in September
September climate averages for Mexico, 1991–2020.
Mexico averages 17°C (63°F) in September, ranging from about 11°C (52°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 106 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 17°C (63°F) against 16°C (61°F) in October — 1.4°C warmer.
September is 1.1°C cooler than August, and 12 mm wetter.
It is outside the easiest window. The most comfortable stretch here is March to August; 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 7 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 16 minutes of daylight in mid-September, against 13 hours 35 minutes in June and 10 hours 41 minutes in December.
On 15 September, sunrise is about 06:36 and sunset about 18:53 local time. Both shift across the month — the month ends 39 minutes shorter than it starts.
