September weather forecastAcalco, Mexico

September

Weather in September

September, the first month of the autumn in Acalco, is still a warm month, with temperature in the range of an average low of 15.1°C (59.2°F) and an average high of 24.3°C (75.7°F).

Temperature

The coldest month is September, with an average high-temperature of 24.3°C (75.7°F) and an average low-temperature of 15.1°C (59.2°F).

Humidity

September is the most humid month, with an average relative humidity of 89%.

Rainfall

September is the month with the most rainfall in Acalco. Rain falls for 29.4 days and accumulates 309mm (12.17") of precipitation.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of September in Acalco, Mexico, sunrise is at 6:22 am and sunset at 6:50 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 6:25 pm CST.

Sunshine

The month with the least sunshine in Acalco, Mexico, is September, with an average of 7.4h of sunshine.

UV index

January, February, June through December, with an average maximum UV index of 5, are months with the lowest UV index in Acalco. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the UV index of 5 transforms into the following advice:
Make use of precautions - Suggestions to resist sunburn are communicated. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Frequently asked questions

September is the month when Acalco, Mexico, sees the average lowest temperatures, with a high of 24.3°C (75.7°F) and a low of 15.1°C (59.2°F).

In Acalco, 24.3°C (75.7°F) is the average high-temperature and 15.1°C (59.2°F) is the average low-temperature during September. In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 32°C (89.6°F).

September is the most humid month in Acalco, Mexico, with an average relative humidity of 89%.

The average relative humidity in September in Acalco, Mexico, is 89%.

September is the month with the most rainfall. Rain falls for 29.4 days and accumulates 309mm (12.17") of precipitation.

In Acalco, during September, the rain falls for 29.4 days and regularly aggregates up to 309mm (12.17") of precipitation.

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

On the first day of September in Acalco, Mexico, sunrise is at 6:22 am and sunset at 6:50 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 6:25 pm CST.

The month with the least sunshine in Acalco is September, with an average of 7.4h of sunshine.

In Acalco, the average sunshine duration in September is 7.4h.

January, February, June through December, with an average maximum UV index of 5, are months with the lowest UV index in Acalco, Mexico.

The average daily maximum UV index in September in Acalco, Mexico, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
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
Acalco, Mexico

  • Average high temperature in September: 24.3°C

The warmest month (with the highest average high temperature) is April (30.7°C).
The month with the lowest average high temperature is September (24.3°C).

  • Average low temperature in September: 15.1°C

The months with the highest average low temperature are May and June (16.5°C).
The coldest month (with the lowest average low temperature) is January (11.2°C).

Average pressure in September
Acalco, Mexico

  • Average pressure in September: 1012.6mbar

The month with the highest atmospheric pressure is January (1014.9mbar).
The month with the lowest atmospheric pressure is May (1012mbar).

Average wind speed in September
Acalco, Mexico

  • Average wind speed in September: 4.6km/h

The windiest month (with the highest average wind speed) is April (5.7km/h).
The calmest month (with the lowest average wind speed) is December (4.4km/h).

Average humidity in September
Acalco, Mexico

  • Average humidity in September: 89%

The month with the highest relative humidity is September (89%).
The month with the lowest relative humidity is April (54%).

Average rainfall in September
Acalco, Mexico

  • Average rainfall in September: 309mm

The wettest month (with the highest rainfall) is September (309mm).
The driest month (with the least rainfall) is January (18mm).

Average rainfall days in September
Acalco, Mexico

  • Average rainfall days in September: 29.4 days

The month with the highest number of rainy days is August (30.6 days).
The month with the least rainy days is December (6.5 days).

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

  • Average daylight in September: 12h and 12min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in September: 7h and 24min

The months with the most sunshine are February, March, April and December (Average sunshine: 9h and 48min).
The month with the least sunshine is September (Average sunshine: 7h and 24min).

Average sunshine days in September
Acalco, Mexico

  • Average sunshine days in September: 0.3 days

The month with the most sunshine days is December (23.2 days).
The month with the least sunshine days is August (0.1 days).

Average UV index in September
Acalco, Mexico

  • Average UV index in September: 5

The months with the highest UV index are March, April and May (UV index 6).
The months with the lowest UV index are January, February, June, July, August, September, October, November and December (UV index 5).

Average cloud cover in September
Acalco, Mexico

  • Average cloud cover in September: 66

The month with the most cloud cover is September (Cloud cover 66).
The month with the least cloud cover is April (Cloud cover 13).

Average visibility in September
Acalco, Mexico

  • Average visibility in September: 6km

The months with the highest visibility are March and April (10km).
The month with the lowest visibility is September (6km).