September weather forecastCostomiru, Romania
September
Weather in September
The first month of the autumn, September, is still a warm month in Costomiru, Romania, with an average temperature ranging between max 24.3°C (75.7°F) and min 13.3°C (55.9°F).Temperature
The arrival of September corresponds with a reduction in the average high-temperature, down from August's moderately hot 29.9°C (85.8°F) to a still warm 24.3°C (75.7°F). During September, Costomiru's temperature falls to a steady low-temperature average of 13.3°C (55.9°F).Humidity
The average relative humidity in September is 54%.Rainfall
September is the month with the least rainfall in Costomiru. Rain falls for 6.5 days and accumulates 16mm (0.63") of precipitation.Snowfall
In Costomiru, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September in Costomiru, sunrise is at 06:34 and sunset at 19:50. On the last day of the month, sunrise is at 07:10 and sunset at 18:54 EEST.
Sunshine
In Costomiru, Romania, the average sunshine in September is 10.3h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Costomiru, Romania
- Average high temperature in September: 24.3°C
The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (2.1°C).
- Average low temperature in September: 13.3°C
The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in September
Costomiru, Romania
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is December (1020.1mbar).
The months with the lowest atmospheric pressure are June and July (1013.1mbar).
Average wind speed in September
Costomiru, Romania
- Average wind speed in September: 11.2km/h
The windiest month (with the highest average wind speed) is March (13.1km/h).
The calmest month (with the lowest average wind speed) is November (10.5km/h).
Average humidity in September
Costomiru, Romania
- Average humidity in September: 54%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Costomiru, Romania
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is June (53mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days in September
Costomiru, Romania
- Average rainfall days in September: 6.5 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is August (6.2 days).
Average snowfall in September
Costomiru, Romania
- Average snowfall in September: 0mm
The month with the highest snowfall is January (65mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Costomiru, Romania
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Costomiru, Romania
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 10h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Costomiru, Romania
- Average sunshine days in September: 22.2 days
The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is May (14.1 days).
Average UV index in September
Costomiru, Romania
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Costomiru, Romania
- Average cloud cover in September: 25
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Costomiru, Romania
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September and October (10km).
The month with the lowest visibility is January (8km).
