Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
As September takes hold, the average high-temperature is a still warm 27.1°C (80.8°F), nearly mirroring that of the previous month. During September, the nighttime temperature in Chapultenango averages to a refreshing 17.4°C (63.3°F).Heat index
Throughout September, the heat index is computed to be a hot 31°C (87.8°F). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.Consider that heat index readings are for situations in the shade and light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
September is the most humid month, with an average relative humidity of 88%.Rainfall
In Chapultenango, in September, it is raining for 27.8 days, with typically 180mm (7.09") of accumulated precipitation. In Chapultenango, Mexico, during the entire year, the rain falls for 233.7 days and collects up to 1131mm (44.53") of precipitation.Daylight
The average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 5:58 am and sunset at 6:25 pm. On the last day of September, in Chapultenango, sunrise is at 6:02 am and sunset at 6:01 pm CST.
Sunshine
In September, the average sunshine is 8.1h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily UV index of 6 turns into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Chapultenango?
What is the most humid month in Chapultenango?
What is the average humidity in September in Chapultenango?
How much does it rain in Chapultenango in September?
How many hours of daylight does Chapultenango have in September?
What time are sunrise and sunset in September in Chapultenango?
How many hours of sunshine does Chapultenango have in September?
How high is the UV index in September in Chapultenango?
Average temperature in September
Chapultenango, Mexico
- Average high temperature in September: 27.1°C
The warmest month (with the highest average high temperature) is April (32°C).
The month with the lowest average high temperature is January (24.9°C).
- Average low temperature in September: 17.4°C
The month with the highest average low temperature is May (20°C).
The coldest month (with the lowest average low temperature) is January (14.4°C).
Average pressure in September
Chapultenango, Mexico
- Average pressure in September: 1012.1mbar
The month with the highest atmospheric pressure is January (1016.2mbar).
The month with the lowest atmospheric pressure is May (1011.6mbar).
Average wind speed in September
Chapultenango, Mexico
- Average wind speed in September: 3.9km/h
The windiest month (with the highest average wind speed) is January (6.2km/h).
The calmest month (with the lowest average wind speed) is June (3.8km/h).
Average humidity in September
Chapultenango, 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 (63%).
Average rainfall in September
Chapultenango, Mexico
- Average rainfall in September: 180mm
The wettest month (with the highest rainfall) is August (226mm).
The driest month (with the least rainfall) is February (12mm).
Average rainfall days in September
Chapultenango, Mexico
- Average rainfall days in September: 27.8 days
The month with the highest number of rainy days is August (28.5 days).
The month with the least rainy days is February (10.4 days).
Average daylight in September /
Average sunshine in September
Chapultenango, Mexico
- Average daylight in September: 12h and 1min
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 1min
The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is October (Average sunshine: 6h and 30min).
Average sunshine days in September
Chapultenango, Mexico
- Average sunshine days in September: 1.9 days
The month with the most sunshine days is December (15.8 days).
The month with the least sunshine days is August (1.3 days).
Average UV index in September
Chapultenango, Mexico
- Average UV index in September: 6
The month with the highest UV index is April (UV index 7).
The months with the lowest UV index are January, August, October and December (UV index 5).
Average cloud cover in September
Chapultenango, Mexico
- Average cloud cover in September: 55
The months with the most cloud cover are September and October (Cloud cover 55).
The month with the least cloud cover is April (Cloud cover 22).
Average visibility in September
Chapultenango, Mexico
- Average visibility in September: 7km
The months with the highest visibility are March and April (10km).
The month with the lowest visibility is October (6km).
