September weather forecastCuernavaca, Mexico

September

Weather in September

September maintains the rainy season's momentum, yet it starts showing signs of an upcoming transition period. The blistering heat of the summer subsides, with temperatures lowering marginally to 21.5°C (70.7°F), and night-time temperature reduces to approximately 12.3°C (54.1°F). Rainfall figures decrease to 239mm (9.41"), indicating the ending phase of the wet season. Though rainfall is on the decline, September still sees fair share of wet days. Yet, the gradual reduction in rain allows for more outdoor activities and signals the entrance into the drier months.

Temperature

The beginning of September records an average high-temperature of a still pleasant 21.5°C (70.7°F), almost echoing the conditions of the previous month. An average low-temperature of 12.3°C (54.1°F) marks the month of September in Cuernavaca.

Humidity

The most humid month is September, with an average relative humidity of 83%.

Rainfall

In Cuernavaca, in September, it is raining for 28.2 days, with typically 239mm (9.41") of accumulated precipitation. Throughout the year, in Cuernavaca, there are 197 rainfall days, and 1359mm (53.5") of precipitation is accumulated.

Daylight

In Cuernavaca, the average length of the day in September is 12h and 14min.
On the first day of September in Cuernavaca, Mexico, sunrise is at 6:22 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 6:25 pm CST.

Sunshine

In Cuernavaca, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September in Cuernavaca, Mexico, is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: During September, 5 as the daily maximum UV index converts into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

The high-temperature during September is 21.5°C (70.7°F) and the low-temperature is 12.3°C (54.1°F). In April, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 27°C (80.6°F).

With an average relative humidity of 83%, September is the most humid month in Cuernavaca.

In September, the average relative humidity in Cuernavaca is 83%.

In September, in Cuernavaca, Mexico, the rain falls for 28.2 days. Throughout September, 239mm (9.41") of precipitation is accumulated.

In Cuernavaca, the average day length in September is 12h and 14min.

In September, on the first day of the month, sunrise is at 6:22 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 6:25 pm CST.

The average sunshine duration in September is 8.8h.

The average daily maximum UV index in September in Cuernavaca is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cuernavaca, Mexico

  • Average high temperature in September: 21.5°C

The warmest month (with the highest average high temperature) is April (27.1°C).
The months with the lowest average high temperature are January and December (21.1°C).

  • Average low temperature in September: 12.3°C

The month with the highest average low temperature is May (14.7°C).
The coldest month (with the lowest average low temperature) is January (8.3°C).

Average pressure in September
Cuernavaca, Mexico

  • Average pressure in September: 1015.2mbar

The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is May (1013.8mbar).

Average wind speed in September
Cuernavaca, Mexico

  • Average wind speed in September: 5.3km/h

The windiest month (with the highest average wind speed) is April (6.9km/h).
The calmest month (with the lowest average wind speed) is July (5.1km/h).

Average humidity in September
Cuernavaca, Mexico

  • Average humidity in September: 83%

The month with the highest relative humidity is September (83%).
The month with the lowest relative humidity is April (42%).

Average rainfall in September
Cuernavaca, Mexico

  • Average rainfall in September: 239mm

The wettest month (with the highest rainfall) is July (265mm).
The driest month (with the least rainfall) is December (5mm).

Average rainfall days in September
Cuernavaca, Mexico

  • Average rainfall days in September: 28.2 days

The month with the highest number of rainy days is August (30.2 days).
The months with the least rainy days are February and December (4 days).

Average daylight in September /
Average sunshine in September
Cuernavaca, Mexico

  • Average daylight in September: 12h and 12min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in September: 8h and 48min

The months with the most sunshine are February and May (Average sunshine: 9h and 48min).
The month with the least sunshine is November (Average sunshine: 8h and 6min).

Average sunshine days in September
Cuernavaca, Mexico

  • Average sunshine days in September: 0.7 days

The month with the most sunshine days is December (24.5 days).
The month with the least sunshine days is August (0.2 days).

Average UV index in September
Cuernavaca, Mexico

  • Average UV index in September: 5

The month with the highest UV index is April (UV index 6).
The months with the lowest UV index are January, August, October, November and December (UV index 4).

Average cloud cover in September
Cuernavaca, Mexico

  • Average cloud cover in September: 39

The month with the most cloud cover is September (Cloud cover 39).
The months with the least cloud cover are February and December (Cloud cover 10).

Average visibility in September
Cuernavaca, Mexico

  • Average visibility in September: 8km

The months with the highest visibility are January, February, March, April, May, November and December (10km).
The month with the lowest visibility is September (8km).