September weather forecast and climate
Monterrey, Mexico

The sun setting over Monterrey, Mexico, with a far view of the Sierra Madre mountain ranges
The sun setting over Monterrey, Mexico, with a far view of the Sierra Madre mountain ranges

Temperature

The average high-temperature, is 31.5°C (88.7°F), while the average low-temperature is 20.9°C (69.6°F).

Humidity

In Monterrey, the average relative humidity is 69%.

Rainfall

September is the month with the most rainfall. Rain falls for 8.2 days and accumulates 150.6mm (5.9") of precipitation.

Daylight

In September, the average length of the day is 12.3h.

Sunshine

In September, the average sunshine is 6.7h.

UV index

In September, the average UV index is 11.

What is the temperature in September in Monterrey?

In September, in Monterrey, the average high-temperature is 31.5°C (88.7°F), and the average low-temperature is 20.9°C (69.6°F).

What is the average humidity in September in Monterrey?

In September, the average relative humidity in Monterrey is 69%.

How much does it rain in Monterrey in September?

In Monterrey, Mexico, in September, it is raining for 8.2 days, with typically 150.6mm (5.9") of accumulated precipitation.

What is the wettest month in Monterrey?

September is the month with the most rainfall in Monterrey, Mexico. Rain falls for 8.2 days and accumulates 150.6mm (5.9") of precipitation.

How many hours of daylight does Monterrey have in September?

The average length of the day in September is 12.3h.

How long on average sun shines in September in Monterrey?

In September, the average sunshine in Monterrey is 6.7h.

What is the UV index intensity in September in Monterrey?

The average UV index in September in Monterrey, Mexico, is 11.
Average temperature in September - Monterrey, Mexico
  • Average high temperature in September: 31.5°C

The warmest month (with the highest average high temperature) is July (34.8°C).
The month with the lowest average high temperature is January (20.7°C).

  • Average low temperature in September: 20.9°C

The month with the highest average low temperature is August (22.5°C).
The coldest month (with the lowest average low temperature) is January (8.2°C).

Average humidity in September - Monterrey, Mexico
  • Average humidity in September: 69%

The month with the highest relative humidity is October (71%).
The month with the lowest relative humidity is March (58%).

Average rainfall in September - Monterrey, Mexico
  • Average rainfall in September: 150.6mm

The wettest month (with the highest rainfall) is September (150.6mm).
The driest month (with the lowest rainfall) is December (14.1mm).

Average rainfall days in September - Monterrey, Mexico
  • Average rainfall days in September: 8.2 days

The month with the highest number of rainy days is September (8.2 days).
Months with the lowest number of rainy days are March and December (3.4 days).

Average daylight in September / Average sunshine in September - Monterrey, Mexico
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.7h).
The month with shortest days is December (Average daylight: 10.6h).

  • Average sunshine in September: 6.7h

The month with most sunshine is July (Average sunshine: 8h).
The month with least sunshine is December (Average sunshine: 4.3h).

Average UV index in September - Monterrey, Mexico
  • Average UV index in September: 11

Months with the highest UV index are May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 5).

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