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
The decrease of average high-temperatures is mild in September, with a decline from a warm 27°C (80.6°F) in August to an agreeable 21.7°C (71.1°F). The mean low-temperature during September nights in Heltiu is a cool 10.4°C (50.7°F).Humidity
In Heltiu, the average relative humidity in September is 63%.Rainfall
September and November are months with the least rain in Heltiu, Romania, when the rain falls for 8.5 days and typically aggregates up to 20mm (0.79") of rain.Snowfall
In Heltiu, snow does not fall in May through September.Daylight
In Heltiu, Romania, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 06:33 and sunset at 19:50. On the last day of September, in Heltiu, Romania, sunrise is at 07:10 and sunset at 18:54 EEST.
Sunshine
The average sunshine in September is 10.1h.UV index
The average daily maximum UV index in September in Heltiu, Romania, is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Adopt protective measures - It is advised to guard against sun damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are the temperatures in Heltiu in September?
What is the average humidity in September in Heltiu?
What is the driest month in Heltiu?
How much does it rain in Heltiu in September?
When it does not snow in Heltiu?
Does it snow in Heltiu in September?
What is the average length of the day in September in Heltiu?
What time are sunrise and sunset in September in Heltiu?
How many hours of sunshine does Heltiu have in September?
What is the UV index intensity in September in Heltiu?
Average temperature in September
Heltiu, Romania
- Average high temperature in September: 21.7°C
The warmest month (with the highest average high temperature) is August (27°C).
The month with the lowest average high temperature is January (0.2°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (-5.6°C).
Average pressure in September
Heltiu, Romania
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is December (1020.1mbar).
The month with the lowest atmospheric pressure is June (1013.5mbar).
Average wind speed in September
Heltiu, Romania
- Average wind speed in September: 9.1km/h
The windiest month (with the highest average wind speed) is April (10.9km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in September
Heltiu, Romania
- Average humidity in September: 63%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Heltiu, Romania
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is June (87mm).
The driest months (with the least rainfall) are September and November (20mm).
Average rainfall days in September
Heltiu, Romania
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in September
Heltiu, Romania
- Average snowfall in September: 0mm
The month with the highest snowfall is January (131mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Heltiu, Romania
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10 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
Heltiu, Romania
- Average daylight in September: 12h and 3min
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 1min
The month with the most sunshine is August (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Heltiu, Romania
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is August (21.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Heltiu, Romania
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Heltiu, Romania
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Heltiu, Romania
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February and December (8km).
Heltiu, Romania
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