September weather forecastSemtín, Czech Republic
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Semtín, Czech Republic, with an average temperature fluctuating between 17.9°C (64.2°F) and 8.8°C (47.8°F).Temperature
Semtín's progression into September includes a drop in the average high-temperature, from a moderately hot 23.2°C (73.8°F) in August to a comfortable 17.9°C (64.2°F). In the month of September, an average of 8.8°C (47.8°F) marks the low-temperature.Humidity
In September, the average relative humidity is 78%.Rainfall
In September, the rain falls for 14.6 days. Throughout September, 37mm (1.46") of precipitation is accumulated. In Semtín, during the entire year, the rain falls for 176.9 days and collects up to 627mm (24.69") of precipitation.Snowfall
In Semtín, snow does not fall in June through September.Daylight
The average length of the day in September in Semtín is 12h and 37min.On the first day of September, sunrise is at 06:12 and sunset at 19:41. On the last day of the month, sunrise is at 06:56 and sunset at 18:37 CEST.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 3 in September leads to these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Semtín, Czech Republic
- Average high temperature in September: 17.9°C
The warmest month (with the highest average high temperature) is August (23.2°C).
The month with the lowest average high temperature is January (0.3°C).
- Average low temperature in September: 8.8°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-4.4°C).
Average pressure in September
Semtín, Czech Republic
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is June (1015.5mbar).
Average wind speed in September
Semtín, Czech Republic
- Average wind speed in September: 10.3km/h
The windiest month (with the highest average wind speed) is December (14.5km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in September
Semtín, Czech Republic
- Average humidity in September: 78%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and August (74%).
Average rainfall in September
Semtín, Czech Republic
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is June (100mm).
The driest month (with the least rainfall) is November (26mm).
Average rainfall days in September
Semtín, Czech Republic
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is June (22.5 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in September
Semtín, Czech Republic
- Average snowfall in September: 0mm
The month with the highest snowfall is January (204mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Semtín, Czech Republic
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Semtín, Czech Republic
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Semtín, Czech Republic
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is October (16 days).
The month with the least sunshine days is June (5.3 days).
Average UV index in September
Semtín, Czech Republic
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Semtín, Czech Republic
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Semtín, Czech Republic
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August and September (9km).
The month with the lowest visibility is January (7km).
