September weather forecastLomas de Chapultepec, Mexico
September
Weather in September
September, the first month of the autumn in Lomas de Chapultepec, is also an agreeable month, with an average temperature fluctuating between 11°C (51.8°F) and 20.8°C (69.4°F).Temperature
As August transitions into September, the average high-temperature rests at a still agreeable 20.8°C (69.4°F), maintaining a close resemblance to the previous month. Throughout September, the temperature in Lomas de Chapultepec falls to an average low of 11°C (51.8°F).Humidity
The most humid month is September, with an average relative humidity of 77%.Rainfall
In Lomas de Chapultepec, in September, it is raining for 25.7 days, with typically 116mm (4.57") of accumulated precipitation. In Lomas de Chapultepec, during the entire year, the rain falls for 176.8 days and collects up to 781mm (30.75") of precipitation.Daylight
In Lomas de Chapultepec, Mexico, the average length of the day in September is 12h and 14min.On the first day of September in Lomas de Chapultepec, sunrise is at 6:21 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
The average sunshine in September is 9.1h.UV index
The months with the lowest UV index in Lomas de Chapultepec, Mexico, are January, June, August through December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 4 in September translates into this advice:
Undertake precautions - Guarding against sun damage is counselled. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lomas de Chapultepec, Mexico
- Average high temperature in September: 20.8°C
The warmest months (with the highest average high temperature) are April and May (25.4°C).
The month with the lowest average high temperature is January (19.2°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is May (13.7°C).
The coldest month (with the lowest average low temperature) is January (6.8°C).
Average pressure in September
Lomas de Chapultepec, Mexico
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is January (1018.3mbar).
The month with the lowest atmospheric pressure is May (1014.1mbar).
Average wind speed in September
Lomas de Chapultepec, Mexico
- Average wind speed in September: 6.2km/h
The windiest month (with the highest average wind speed) is March (7.4km/h).
The calmest month (with the lowest average wind speed) is July (5.4km/h).
Average humidity in September
Lomas de Chapultepec, Mexico
- Average humidity in September: 77%
The month with the highest relative humidity is September (77%).
The month with the lowest relative humidity is April (41%).
Average rainfall in September
Lomas de Chapultepec, Mexico
- Average rainfall in September: 116mm
The wettest month (with the highest rainfall) is July (181mm).
The driest month (with the least rainfall) is December (4mm).
Average rainfall days in September
Lomas de Chapultepec, Mexico
- Average rainfall days in September: 25.7 days
The month with the highest number of rainy days is July (28.8 days).
The month with the least rainy days is December (3.9 days).
Average daylight in September /
Average sunshine in September
Lomas de Chapultepec, 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: 9h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 7h and 48min).
Average sunshine days in September
Lomas de Chapultepec, Mexico
- Average sunshine days in September: 2.5 days
The month with the most sunshine days is December (25.1 days).
The month with the least sunshine days is July (0.3 days).
Average UV index in September
Lomas de Chapultepec, Mexico
- Average UV index in September: 4
The months with the highest UV index are February, March, April, May and July (UV index 5).
The months with the lowest UV index are January, June, August, September, October, November and December (UV index 4).
Average cloud cover in September
Lomas de Chapultepec, Mexico
- Average cloud cover in September: 37
The month with the most cloud cover is July (Cloud cover 38).
The month with the least cloud cover is December (Cloud cover 10).
Average visibility in September
Lomas de Chapultepec, Mexico
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The months with the lowest visibility are July, August and September (8km).
