September weather forecastDelta, Mexico
September
Weather in September
September, the first month of the autumn in Delta, is also a fiery hot month, with an average temperature varying between 27°C (80.6°F) and 37.6°C (99.7°F).Temperature
With the onset of September, Delta experiences a modest temperature adjustment, with the average high-temperature gently receding from a blisteringly hot 41°C (105.8°F) in August to a torrid 37.6°C (99.7°F). Delta's average low-temperature in September is measured at a warm 27°C (80.6°F).Humidity
The average relative humidity in September in Delta is 30%.Rainfall
In Delta, in September, it is raining for 4.1 days, with typically 8mm (0.31") of accumulated precipitation. Throughout the year, there are 30 rainfall days, and 69mm (2.72") of precipitation is accumulated.Daylight
In Delta, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:16 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 6:26 pm PDT.
Sunshine
In September, the average sunshine is 9.8h.UV index
The months with the highest UV index in Delta are June through September, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 8 in September interprets into the following recommendations:
Ensure precautions are always in place. The risk to skin and eyes is high without them. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Delta, Mexico
- Average high temperature in September: 37.6°C
The warmest month (with the highest average high temperature) is July (41.2°C).
The month with the lowest average high temperature is December (19.5°C).
- Average low temperature in September: 27°C
The month with the highest average low temperature is August (30.1°C).
The coldest month (with the lowest average low temperature) is December (10.3°C).
Average pressure in September
Delta, Mexico
- Average pressure in September: 1008.8mbar
The month with the highest atmospheric pressure is January (1018.2mbar).
The month with the lowest atmospheric pressure is June (1007.4mbar).
Average wind speed in September
Delta, Mexico
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is July (13.5km/h).
The calmest month (with the lowest average wind speed) is November (10.9km/h).
Average humidity in September
Delta, Mexico
- Average humidity in September: 30%
The month with the highest relative humidity is December (38%).
The month with the lowest relative humidity is June (23%).
Average rainfall in September
Delta, Mexico
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is July (11mm).
The driest months (with the least rainfall) are May and June (1mm).
Average rainfall days in September
Delta, Mexico
- Average rainfall days in September: 4.1 days
The month with the highest number of rainy days is July (5.8 days).
The month with the least rainy days is May (0.7 days).
Average daylight in September /
Average sunshine in September
Delta, Mexico
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 48min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in September
Delta, Mexico
- Average sunshine days in September: 25.2 days
The month with the most sunshine days is May (30 days).
The month with the least sunshine days is July (23.4 days).
Average UV index in September
Delta, Mexico
- Average UV index in September: 8
The months with the highest UV index are June, July, August and September (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Delta, Mexico
- Average cloud cover in September: 8
The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in September
Delta, Mexico
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
