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's arrival coincides with a drop in the average high-temperature, decreasing from August's warm 25°C (77°F) to an enjoyable 19°C (66.2°F). September nights are marked by an average low-temperature of 10.6°C (51.1°F).Humidity
The average relative humidity in September in Grójec is 73%.Rainfall
In Grójec, in September, during 11.3 rainfall days, 28mm (1.1") of precipitation is typically accumulated. In Grójec, during the entire year, the rain falls for 148 days and collects up to 345mm (13.58") of precipitation.Snowfall
In Grójec, snow does not fall in June through September.Daylight
In September, the average length of the day in Grójec is 12h and 39min.On the first day of September in Grójec, sunrise is at 05:49 and sunset at 19:23. On the last day of the month, sunrise is at 06:36 and sunset at 18:16 CEST.
Sunshine
In September, the average sunshine in Grójec is 8h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 during September translates into the following directions:
Ensure safety - Sun damage prevention is strongly urged. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grójec in September?
What is the average humidity in September in Grójec?
How many days does it rain in September in Grójec?
When it does not snow in Grójec?
Does it snow in Grójec in September?
What is the average length of the day in September in Grójec?
When is the sunrise / sunset in September in Grójec?
How long on average sun shines in September in Grójec?
How high is the UV index in September in Grójec?
Average temperature in September
Grójec, Poland
- Average high temperature in September: 19°C
The warmest month (with the highest average high temperature) is August (25°C).
The month with the lowest average high temperature is January (-0.4°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in September
Grójec, Poland
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is October (1018.2mbar).
The month with the lowest atmospheric pressure is July (1013.6mbar).
Average wind speed in September
Grójec, Poland
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is December (14km/h).
The calmest month (with the lowest average wind speed) is August (10.4km/h).
Average humidity in September
Grójec, Poland
- Average humidity in September: 73%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Grójec, Poland
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is May (54mm).
The driest month (with the least rainfall) is November (18mm).
Average rainfall days in September
Grójec, Poland
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Grójec, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (94mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Grójec, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grójec, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Grójec, Poland
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in September
Grójec, Poland
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Grójec, Poland
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Grójec, Poland
- Average visibility in September: 9km
The months with the highest visibility are June and August (10km).
The month with the lowest visibility is January (7km).
