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
The onset of September is marked by a decrease in temperature, transitioning from a warm 27.4°C (81.3°F) in August to a pleasant 21.2°C (70.2°F). During September, Grlava observes a consistent average nighttime temperature of 11.1°C (52°F).Humidity
In Grlava, the average relative humidity in September is 75%.Rainfall
In Grlava, Slovenia, in September, during 11.9 rainfall days, 53mm (2.09") of precipitation is typically accumulated. Throughout the year, there are 150.5 rainfall days, and 599mm (23.58") of precipitation is accumulated.Snowfall
In Grlava, 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 the month, sunrise is at 06:15 and sunset at 19:34. On the last day of September, sunrise is at 06:53 and sunset at 18:37 CEST.
Sunshine
In September, the average sunshine in Grlava is 9.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grlava in September?
What is the average humidity in September in Grlava?
How much does it rain in Grlava in September?
When it does not snow in Grlava?
Does it snow in Grlava in September?
What is the average length of the day in September in Grlava?
When are sunrise and sunset in September in Grlava?
How long on average sun shines in September in Grlava?
What is the UV index reading in September in Grlava?
Average temperature in September
Grlava, Slovenia
- Average high temperature in September: 21.2°C
The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is January (2.9°C).
- Average low temperature in September: 11.1°C
The months with the highest average low temperature are July and August (14.7°C).
The coldest month (with the lowest average low temperature) is January (-2°C).
Average pressure in September
Grlava, Slovenia
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The months with the lowest atmospheric pressure are May and June (1014.9mbar).
Average wind speed in September
Grlava, Slovenia
- Average wind speed in September: 7.8km/h
The windiest month (with the highest average wind speed) is March (11.2km/h).
The calmest month (with the lowest average wind speed) is August (7.1km/h).
Average humidity in September
Grlava, Slovenia
- Average humidity in September: 75%
The months with the highest relative humidity are January and November (84%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Grlava, Slovenia
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is May (81mm).
The driest month (with the least rainfall) is January (34mm).
Average rainfall days in September
Grlava, Slovenia
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is October (9.5 days).
Average snowfall in September
Grlava, Slovenia
- Average snowfall in September: 0mm
The month with the highest snowfall is January (117mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Grlava, Slovenia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 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
Grlava, Slovenia
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Grlava, Slovenia
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is May (8.3 days).
Average UV index in September
Grlava, Slovenia
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Grlava, Slovenia
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Grlava, Slovenia
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February and November (8km).
