September weather forecastSan Juan Comaltepec, Mexico
September
Weather in September
September, the first month of the autumn in San Juan Comaltepec, is still a pleasant month, with an average temperature fluctuating between 13°C (55.4°F) and 21.1°C (70°F).Temperature
Welcoming September, San Juan Comaltepec notes an average high-temperature of a still pleasant 21.1°C (70°F), nearly consistent with August's 22.2°C (72°F). In San Juan Comaltepec, the average temperature during the nights of September drops to a moderate 13°C (55.4°F).Humidity
The most humid month is September, with an average relative humidity of 86%.Rainfall
In San Juan Comaltepec, Mexico, in September, during 28.8 rainfall days, 200mm (7.87") of precipitation is typically accumulated. In San Juan Comaltepec, during the entire year, the rain falls for 222.9 days and collects up to 1066mm (41.97") of precipitation.Daylight
In San Juan Comaltepec, the average length of the day in September is 12h and 14min.On the first day of September, sunrise is at 6:10 am and sunset at 6:37 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 6:13 pm CST.
Sunshine
In San Juan Comaltepec, the average sunshine in September is 8.3h.UV index
February through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
San Juan Comaltepec, Mexico
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is April (26.8°C).
The month with the lowest average high temperature is November (20.6°C).
- Average low temperature in September: 13°C
The month with the highest average low temperature is June (13.3°C).
The coldest month (with the lowest average low temperature) is January (7.8°C).
Average pressure in September
San Juan Comaltepec, Mexico
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is January (1017.1mbar).
The month with the lowest atmospheric pressure is May (1012.9mbar).
Average wind speed in September
San Juan Comaltepec, Mexico
- Average wind speed in September: 5.5km/h
The windiest month (with the highest average wind speed) is November (7.3km/h).
The calmest months (with the lowest average wind speed) are May and June (5.3km/h).
Average humidity in September
San Juan Comaltepec, Mexico
- Average humidity in September: 86%
The month with the highest relative humidity is September (86%).
The month with the lowest relative humidity is April (62%).
Average rainfall in September
San Juan Comaltepec, Mexico
- Average rainfall in September: 200mm
The wettest month (with the highest rainfall) is June (203mm).
The driest month (with the least rainfall) is December (5mm).
Average rainfall days in September
San Juan Comaltepec, Mexico
- Average rainfall days in September: 28.8 days
The month with the highest number of rainy days is September (28.8 days).
The month with the least rainy days is February (7 days).
Average daylight in September /
Average sunshine in September
San Juan Comaltepec, 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 18min
The month with the most sunshine is May (Average sunshine: 10h and 42min).
The month with the least sunshine is November (Average sunshine: 7h and 24min).
Average sunshine days in September
San Juan Comaltepec, Mexico
- Average sunshine days in September: 0.4 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is September (0.4 days).
Average UV index in September
San Juan Comaltepec, Mexico
- Average UV index in September: 5
The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, October, November and December (UV index 4).
Average cloud cover in September
San Juan Comaltepec, Mexico
- Average cloud cover in September: 54
The month with the most cloud cover is September (Cloud cover 54).
The month with the least cloud cover is March (Cloud cover 21).
Average visibility in September
San Juan Comaltepec, Mexico
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April and May (9km).
The months with the lowest visibility are July, August, September, October and November (7km).
