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
September brings a decrease in the average high-temperature, falling from August's warm 23.2°C (73.8°F) to an enjoyable 18°C (64.4°F). During September, the nighttime temperature averages to a chilly 8.6°C (47.5°F).Humidity
In September, the average relative humidity is 77%.Rainfall
In Kostelecké Horky, in September, during 9.8 rainfall days, 28mm (1.1") of precipitation is typically accumulated. In Kostelecké Horky, during the entire year, the rain falls for 134 days and collects up to 451mm (17.76") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Kostelecké Horky, the average length of the day in September is 12h and 37min.On the first day of September, sunrise is at 06:10 and sunset at 19:39. On the last day of the month, sunrise is at 06:54 and sunset at 18:35 CEST.
Sunshine
The average sunshine in September is 8.7h.UV index
In Kostelecké Horky, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September in Kostelecké Horky?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Kostelecké Horky, Czech Republic
- Average high temperature in September: 18°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 (-0.5°C).
- Average low temperature in September: 8.6°C
The month with the highest average low temperature is August (12.4°C).
The coldest month (with the lowest average low temperature) is January (-5.3°C).
Average pressure in September
Kostelecké Horky, Czech Republic
- Average pressure in September: 1018mbar
The months with the highest atmospheric pressure are October and December (1018.6mbar).
The month with the lowest atmospheric pressure is July (1015mbar).
Average wind speed in September
Kostelecké Horky, Czech Republic
- Average wind speed in September: 10.3km/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 (9.3km/h).
Average humidity in September
Kostelecké Horky, Czech Republic
- Average humidity in September: 77%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Kostelecké Horky, Czech Republic
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is June (65mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Kostelecké Horky, Czech Republic
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
Kostelecké Horky, Czech Republic
- Average snowfall in September: 0mm
The month with the highest snowfall is January (138mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Kostelecké Horky, Czech Republic
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Kostelecké Horky, Czech Republic
- Average daylight in September: 12h and 4min
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 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Kostelecké Horky, Czech Republic
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is October (18.7 days).
The months with the least sunshine days are May and December (11 days).
Average UV index in September
Kostelecké Horky, Czech Republic
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in September
Kostelecké Horky, Czech Republic
- Average cloud cover in September: 38
The months with the most cloud cover are January and December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Kostelecké Horky, 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).
