Monterrey weather in September 2025

Expect 88°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Monterrey in September. Check more long-term weather averages for Monterrey in September before you book your next holiday to Mexico in 2025/2026.

  • 88°F maximum daytime temperature in September in Monterrey88
    88°F max day temperature
  • 5 hours of sunshine per day
  • 8 days with some rainfall in September in Monterrey8
    8 days with some rainfall
  • 70°F minimum night-time temperature in September in Monterrey70
    70°F min night temperature
  • 12 hours of daylight per day in September in Monterrey12
    12 hours of daylight per day
  • High heat & humidity in September in MonterreyH
    High heat & humidity
  • 6.1 inches monthly rainfall in September in Monterrey6.1
    6.1 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Monterrey11
    11 (Extreme) UV index

More about Monterrey

Monterrey by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Mexico

TUI: up to 7% off holidays booked online

  • Book online with TUI & save up to 7% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

View all TUI offers

TUITUI deal finder

The September weather guide for Mexico (Monterrey) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

Back to top

More about Mexico

How hot is it in Monterrey in September?

Daytime temperatures usually reach 88°F in Monterrey in September with high heat and humidity, falling to 70°F at night.

How sunny is it in Monterrey in September?

There are normally 5 hours of bright sunshine each day in Monterrey in September - that's 41% of daylight hours.

Does it rain in Monterrey in September?

There are usually 8 days with some rain in Monterrey in September and the average monthly rainfall is 6.1 inches.

What is the chance of a hurricane in Monterrey in September?

On average less than 1 day in September in Monterrey is likely to be affected by the passage of one or more tropical storms.

Monterrey September sunrise & sunset times

Browse the sunrise and sunset times for Monterrey in September 2025. Select a month to view Monterrey sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:22 19:00
Monday, 15th September 2025 06:27 18:45
Tuesday, 30th September 2025 06:33 18:29

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^