September weather forecastBiia, Romania
September
Weather in September
September, the first month of the autumn in Biia, is also a moderately hot month, with an average temperature varying between 10.5°C (50.9°F) and 23.1°C (73.6°F).Temperature
Biia's progression into September involves a drop in the average high-temperature, receding from a warm 28.9°C (84°F) in August to a still moderately hot 23.1°C (73.6°F). Biia experiences a drastic reduction from day temperatures to an average low of 10.5°C (50.9°F) in September.Humidity
In September, the average relative humidity is 62%.Rainfall
In Biia, in September, during 9.3 rainfall days, 16mm (0.63") of precipitation is typically accumulated. Throughout the year, in Biia, there are 133.8 rainfall days, and 338mm (13.31") of precipitation is accumulated.Snowfall
In Biia, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September, sunrise is at 06:45 and sunset at 20:02. On the last day of the month, sunrise is at 07:21 and sunset at 19:05 EEST.
Sunshine
In September, the average sunshine in Biia, Romania, is 10.1h.UV index
The average daily maximum UV index in September in Biia, Romania, is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Biia, Romania
- Average high temperature in September: 23.1°C
The warmest month (with the highest average high temperature) is August (28.9°C).
The month with the lowest average high temperature is January (1.3°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is January (-5°C).
Average pressure in September
Biia, Romania
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is December (1020.5mbar).
The months with the lowest atmospheric pressure are May and June (1013.9mbar).
Average wind speed in September
Biia, Romania
- Average wind speed in September: 6.2km/h
The windiest month (with the highest average wind speed) is March (7.6km/h).
The calmest month (with the lowest average wind speed) is August (5.2km/h).
Average humidity in September
Biia, Romania
- Average humidity in September: 62%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Biia, Romania
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is June (69mm).
The driest months (with the least rainfall) are January and November (14mm).
Average rainfall days in September
Biia, Romania
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is December (6.1 days).
Average snowfall in September
Biia, Romania
- Average snowfall in September: 0mm
The month with the highest snowfall is January (54mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Biia, Romania
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Biia, Romania
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 6min
The months with the most sunshine are July and August (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in September
Biia, Romania
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is June (8 days).
Average UV index in September
Biia, Romania
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Biia, Romania
- Average cloud cover in September: 24
The months with the most cloud cover are January and February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Biia, Romania
- Average visibility in September: 10km
The months with the highest visibility are July, August, September and October (10km).
The months with the lowest visibility are January and February (8km).
