September weather forecastChalchihuitán, Mexico
September
Weather in September
The first month of the autumn, September, is still a warm month in Chalchihuitán, Mexico, with temperature in the range of an average low of 15.5°C (59.9°F) and an average high of 24.1°C (75.4°F).Temperature
The average high-temperature in September, at a still warm 24.1°C (75.4°F), reveals a modest deviation from August's 24.9°C (76.8°F). An average low-temperature of 15.5°C (59.9°F) is anticipated throughout the nights during September.Humidity
September is the most humid month, with an average relative humidity of 88%.Rainfall
In Chalchihuitán, Mexico, in September, during 28.5 rainfall days, 276mm (10.87") of precipitation is typically accumulated. Throughout the year, there are 249.8 rainfall days, and 1911mm (75.24") of precipitation is accumulated.Daylight
In Chalchihuitán, the average length of the day in September is 12h and 13min.On the first day of the month, sunrise is at 5:56 am and sunset at 6:23 pm. On the last day of September, in Chalchihuitán, sunrise is at 6:00 am and sunset at 5:59 pm CST.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Chalchihuitán, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chalchihuitán, Mexico
- Average high temperature in September: 24.1°C
The warmest month (with the highest average high temperature) is April (27.5°C).
The month with the lowest average high temperature is January (21.8°C).
- Average low temperature in September: 15.5°C
The month with the highest average low temperature is May (16.7°C).
The coldest month (with the lowest average low temperature) is January (11.5°C).
Average pressure in September
Chalchihuitán, Mexico
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is January (1016.7mbar).
The month with the lowest atmospheric pressure is May (1011.9mbar).
Average wind speed in September
Chalchihuitán, Mexico
- Average wind speed in September: 3.2km/h
The windiest month (with the highest average wind speed) is January (4.7km/h).
The calmest month (with the lowest average wind speed) is September (3.2km/h).
Average humidity in September
Chalchihuitán, Mexico
- Average humidity in September: 88%
The month with the highest relative humidity is September (88%).
The month with the lowest relative humidity is April (68%).
Average rainfall in September
Chalchihuitán, Mexico
- Average rainfall in September: 276mm
The wettest month (with the highest rainfall) is June (359mm).
The driest month (with the least rainfall) is February (24mm).
Average rainfall days in September
Chalchihuitán, Mexico
- Average rainfall days in September: 28.5 days
The month with the highest number of rainy days is September (28.5 days).
The month with the least rainy days is December (12.5 days).
Average daylight in September /
Average sunshine in September
Chalchihuitán, Mexico
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is April (Average sunshine: 10h and 42min).
The month with the least sunshine is October (Average sunshine: 6h and 24min).
Average sunshine days in September
Chalchihuitán, Mexico
- Average sunshine days in September: 0.9 days
The month with the most sunshine days is December (14.7 days).
The month with the least sunshine days is September (0.9 days).
Average UV index in September
Chalchihuitán, Mexico
- Average UV index in September: 5
The months with the highest UV index are March and April (UV index 6).
The month with the lowest UV index is November (UV index 4).
Average cloud cover in September
Chalchihuitán, Mexico
- Average cloud cover in September: 54
The month with the most cloud cover is October (Cloud cover 55).
The month with the least cloud cover is March (Cloud cover 25).
Average visibility in September
Chalchihuitán, Mexico
- Average visibility in September: 7km
The months with the highest visibility are February, March, April and May (9km).
The month with the lowest visibility is October (6km).
