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 snowfall in September
- Average snowfall 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
Biel's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's moderately hot 23.7°C (74.7°F) to a refreshing 19.6°C (67.3°F). During the nights in September, the temperature in Biel averages to a frosty 9.2°C (48.6°F).Humidity
In Biel, the average relative humidity in September is 71%.Rainfall
The month with the least rainfall in Biel is September, when the rain falls for 12.4 days and typically collects 39mm (1.54") of precipitation.Snowfall
In Biel, Spain, snow does not fall in July through September.Daylight
In September, the average length of the day in Biel, Spain, is 12h and 29min.On the first day of the month, sunrise is at 07:29 and sunset at 20:37. On the last day of September, in Biel, sunrise is at 08:00 and sunset at 19:46 CEST.
Sunshine
The average sunshine in September in Biel is 9.4h.UV index
In Biel, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Biel?
What is the average humidity in September in Biel?
What is the driest month in Biel?
How much does it rain in Biel in September?
When it does not snow in Biel?
Does it snow in Biel in September?
What is the average length of the day in September in Biel?
When is the sunrise / sunset in September in Biel?
How many hours of sunshine does Biel have in September?
What is the UV index reading in September in Biel?
Average temperature in September
Biel, Spain
- Average high temperature in September: 19.6°C
The warmest month (with the highest average high temperature) is August (23.7°C).
The month with the lowest average high temperature is January (4.9°C).
- Average low temperature in September: 9.2°C
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is February (-2.4°C).
Average pressure in September
Biel, Spain
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1022.1mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Biel, Spain
- Average wind speed in September: 6.8km/h
The windiest month (with the highest average wind speed) is February (9.7km/h).
The calmest month (with the lowest average wind speed) is September (6.8km/h).
Average humidity in September
Biel, Spain
- Average humidity in September: 71%
The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Biel, Spain
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is November (119mm).
The driest month (with the least rainfall) is September (39mm).
Average rainfall days in September
Biel, Spain
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in September
Biel, Spain
- Average snowfall in September: 0mm
The month with the highest snowfall is January (709mm).
The months with the least snowfall are July, August and September (0mm).
Average snowfall days in September
Biel, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Biel, Spain
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is November (Average sunshine: 5h and 54min).
Average sunshine days in September
Biel, Spain
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is April (9.1 days).
Average UV index in September
Biel, Spain
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Biel, Spain
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Biel, Spain
- Average visibility in September: 9km
The months with the highest visibility are July and August (10km).
The months with the lowest visibility are January and November (8km).
