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
Weather in September
Temperature
September's onset corresponds with a shift in the average high-temperature, moving from a warm 26.2°C (79.2°F) in August to a pleasant 21°C (69.8°F). Costâna's nighttime temperature during September is consistently averaged at a frosty 9.8°C (49.6°F).Humidity
In September, the average relative humidity in Costâna is 66%.Rainfall
In September, the rain falls for 8.9 days. Throughout September, 18mm (0.71") of precipitation is accumulated. In Costâna, during the entire year, the rain falls for 132.9 days and collects up to 400mm (15.75") of precipitation.Snowfall
May through September are months without snowfall in Costâna.Daylight
The average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 06:34 and sunset at 19:56. On the last day of September, sunrise is at 07:13 and sunset at 18:56 EEST.
Sunshine
The average sunshine in September is 9.7h.UV index
The average daily maximum UV index in September in Costâna is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Make use of precautions - It is urged to ward off sun damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What are the temperatures in Costâna in September?
What is the average humidity in September in Costâna?
How much does it rain in Costâna in September?
When it does not snow in Costâna?
Does it snow in Costâna in September?
What is the average length of the day in September in Costâna?
What time are sunrise and sunset in September in Costâna?
How many hours of sunshine does Costâna have in September?
What is the UV index reading in September in Costâna?
Average temperature in September
Costâna, Romania
- Average high temperature in September: 21°C
The warmest month (with the highest average high temperature) is August (26.2°C).
The month with the lowest average high temperature is January (-0.5°C).
- Average low temperature in September: 9.8°C
The months with the highest average low temperature are July and August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-6°C).
Average pressure in September
Costâna, Romania
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is October (1020mbar).
The month with the lowest atmospheric pressure is June (1014mbar).
Average wind speed in September
Costâna, Romania
- Average wind speed in September: 9.2km/h
The windiest month (with the highest average wind speed) is April (11.7km/h).
The calmest month (with the lowest average wind speed) is August (8.8km/h).
Average humidity in September
Costâna, Romania
- Average humidity in September: 66%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Costâna, Romania
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is June (94mm).
The driest month (with the least rainfall) is November (16mm).
Average rainfall days in September
Costâna, Romania
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is June (19.2 days).
The month with the least rainy days is November (5.2 days).
Average snowfall in September
Costâna, Romania
- Average snowfall in September: 0mm
The month with the highest snowfall is January (125mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Costâna, Romania
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.4 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
Costâna, Romania
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Costâna, Romania
- Average sunshine days in September: 19.1 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is June (8.8 days).
Average UV index in September
Costâna, 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
Costâna, Romania
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Costâna, Romania
- Average visibility in September: 10km
The months with the highest visibility are July, August and September (10km).
The month with the lowest visibility is January (7km).
Costâna, Romania
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