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
As August transitions to September, the average high-temperature falls from a moderately hot 23.8°C (74.8°F) to a refreshing 18.2°C (64.8°F). The low-temperature in Gruna averages to a chilly 9.2°C (48.6°F) during the nights of September.Humidity
In Gruna, the average relative humidity in September is 76%.Rainfall
In Gruna, in September, during 12.2 rainfall days, 35mm (1.38") of precipitation is typically accumulated. Throughout the year, in Gruna, there are 168.2 rainfall days, and 519mm (20.43") of precipitation is accumulated.Snowfall
In Gruna, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 37min.On the first day of September, sunrise is at 06:09 and sunset at 19:36. On the last day of the month, sunrise is at 06:52 and sunset at 18:33 CEST.
Sunshine
The average sunshine in September is 9h.UV index
In Gruna, Czech Republic, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Gruna?
What is the average humidity in September in Gruna?
How much does it rain in Gruna in September?
When it does not snow in Gruna?
Does it snow in Gruna in September?
What is the average length of the day in September in Gruna?
When are sunrise and sunset in September in Gruna?
How many hours of sunshine does Gruna have in September?
What is the UV index intensity in September in Gruna?
Average temperature in September
Gruna, Czech Republic
- Average high temperature in September: 18.2°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 (-0.7°C).
- Average low temperature in September: 9.2°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is January (-5.1°C).
Average pressure in September
Gruna, Czech Republic
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is December (1018.9mbar).
The month with the lowest atmospheric pressure is July (1015mbar).
Average wind speed in September
Gruna, Czech Republic
- Average wind speed in September: 9.7km/h
The windiest months (with the highest average wind speed) are February and March (13km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in September
Gruna, Czech Republic
- Average humidity in September: 76%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Gruna, Czech Republic
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is July (77mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Gruna, Czech Republic
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
Gruna, Czech Republic
- Average snowfall in September: 0mm
The month with the highest snowfall is January (174mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Gruna, Czech Republic
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gruna, 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: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Gruna, Czech Republic
- Average sunshine days in September: 15 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is May (7.8 days).
Average UV index in September
Gruna, Czech Republic
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Gruna, Czech Republic
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Gruna, 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).
