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 arrival of September indicates a decrease in the average high-temperature, moving from a warm 23.8°C (74.8°F) in August to a comfortable 18.4°C (65.1°F). Kostelec nad Vltavou, during the month of September, experiences an average low-temperature of 9.4°C (48.9°F).Humidity
The average relative humidity in September in Kostelec nad Vltavou, Czech Republic, is 77%.Rainfall
In Kostelec nad Vltavou, during September, the rain falls for 11.6 days and regularly aggregates up to 29mm (1.14") of precipitation. Throughout the year, there are 163.7 rainfall days, and 530mm (20.87") of precipitation is accumulated.Snowfall
In Kostelec nad Vltavou, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 36min.On the first day of September, sunrise is at 06:19 and sunset at 19:46. On the last day of the month, sunrise is at 07:02 and sunset at 18:43 CEST.
Sunshine
The average sunshine in September in Kostelec nad Vltavou is 8.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Kostelec nad Vltavou?
What is the average humidity in September in Kostelec nad Vltavou?
How many days does it rain in September in Kostelec nad Vltavou?
When it does not snow in Kostelec nad Vltavou?
Does it snow in Kostelec nad Vltavou in September?
How many hours of daylight does Kostelec nad Vltavou have in September?
When is the sunrise / sunset in September in Kostelec nad Vltavou?
How many hours of sunshine does Kostelec nad Vltavou have in September?
How high is the UV index in September in Kostelec nad Vltavou?
Average temperature in September
Kostelec nad Vltavou, Czech Republic
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is August (23.8°C).
The month with the lowest average high temperature is January (0.9°C).
- Average low temperature in September: 9.4°C
The month with the highest average low temperature is August (13.1°C).
The coldest month (with the lowest average low temperature) is January (-4°C).
Average pressure in September
Kostelec nad Vltavou, Czech Republic
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is December (1019mbar).
The months with the lowest atmospheric pressure are June and July (1015.5mbar).
Average wind speed in September
Kostelec nad Vltavou, Czech Republic
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is December (14.4km/h).
The calmest month (with the lowest average wind speed) is August (8.9km/h).
Average humidity in September
Kostelec nad Vltavou, Czech Republic
- Average humidity in September: 77%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Kostelec nad Vltavou, Czech Republic
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is June (81mm).
The driest month (with the least rainfall) is November (23mm).
Average rainfall days in September
Kostelec nad Vltavou, Czech Republic
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (21 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in September
Kostelec nad Vltavou, Czech Republic
- Average snowfall in September: 0mm
The month with the highest snowfall is January (161mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Kostelec nad Vltavou, Czech Republic
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Kostelec nad Vltavou, Czech Republic
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Kostelec nad Vltavou, Czech Republic
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is May (7.1 days).
Average UV index in September
Kostelec nad Vltavou, Czech Republic
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February and November (UV index 1).
Average cloud cover in September
Kostelec nad Vltavou, Czech Republic
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Kostelec nad Vltavou, Czech Republic
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The month with the lowest visibility is January (7km).
