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 decrease of average high-temperatures is mild in September, with a decline from a warm 25.6°C (78.1°F) in August to a comfortable 19.5°C (67.1°F). An average minimum temperature of 11.2°C (52.2°F) is recorded in Grobniki during the month of September.Humidity
The average relative humidity in September is 71%.Rainfall
In Grobniki, Poland, in September, during 12.5 rainfall days, 39mm (1.54") of precipitation is typically accumulated. Throughout the year, in Grobniki, there are 151.3 rainfall days, and 430mm (16.93") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Grobniki is 12h and 37min.On the first day of September in Grobniki, sunrise is at 06:04 and sunset at 19:32. On the last day of the month, sunrise is at 06:47 and sunset at 18:28 CEST.
Sunshine
In Grobniki, the average sunshine in September is 8.6h.UV index
In Grobniki, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Grobniki?
What is the average humidity in September in Grobniki?
How many days does it rain in September in Grobniki?
When it does not snow in Grobniki?
Does it snow in Grobniki in September?
How many hours of daylight does Grobniki have in September?
When are sunrise and sunset in September in Grobniki?
How many hours of sunshine does Grobniki have in September?
What is the UV index intensity in September in Grobniki?
Average temperature in September
Grobniki, Poland
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (0.8°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is January (-3.2°C).
Average pressure in September
Grobniki, Poland
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is October (1018.6mbar).
The month with the lowest atmospheric pressure is July (1014.6mbar).
Average wind speed in September
Grobniki, Poland
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is December (14.2km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).
Average humidity in September
Grobniki, Poland
- Average humidity in September: 71%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Grobniki, Poland
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is November (20mm).
Average rainfall days in September
Grobniki, Poland
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is June (18.1 days).
The months with the least rainy days are January and February (8.7 days).
Average snowfall in September
Grobniki, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (91mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Grobniki, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grobniki, Poland
- 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 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Grobniki, Poland
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
Grobniki, Poland
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Grobniki, Poland
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Grobniki, Poland
- Average visibility in September: 9km
The months with the highest visibility are June and August (10km).
The months with the lowest visibility are January and February (8km).
