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
Weather in September
Temperature
September signals a slight drop in average high-temperature, sliding from August's warm 23.4°C (74.1°F) to a refreshing 18.7°C (65.7°F). An average low-temperature of 11.1°C (52°F) is common during the nights of September.Humidity
In Grzęzno, the average relative humidity in September is 76%.Rainfall
In September, the rain falls for 10.5 days. Throughout September, 25mm (0.98") of precipitation is accumulated. Throughout the year, there are 161.6 rainfall days, and 423mm (16.65") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 41min.On the first day of September, sunrise is at 06:08 and sunset at 19:48. On the last day of the month, sunrise is at 06:59 and sunset at 18:37 CEST.
Sunshine
In Grzęzno, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grzęzno in September?
What is the average humidity in September in Grzęzno?
How much does it rain in Grzęzno in September?
When it does not snow in Grzęzno?
What is the average length of the day in September in Grzęzno?
When is the sunrise / sunset in September in Grzęzno?
How long on average sun shines in September in Grzęzno?
What is the UV index intensity in September in Grzęzno?
Average temperature in September
Grzęzno, Poland
- Average high temperature in September: 18.7°C
The warmest month (with the highest average high temperature) is August (23.4°C).
The month with the lowest average high temperature is January (1.3°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (-2.2°C).
Average pressure in September
Grzęzno, Poland
- Average pressure in September: 1016.5mbar
The months with the highest atmospheric pressure are September and October (1016.5mbar).
The month with the lowest atmospheric pressure is November (1013.3mbar).
Average wind speed in September
Grzęzno, Poland
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is December (15.9km/h).
The calmest month (with the lowest average wind speed) is August (12.2km/h).
Average humidity in September
Grzęzno, Poland
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Grzęzno, Poland
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is January (48mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Grzęzno, Poland
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in September
Grzęzno, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (88mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Grzęzno, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grzęzno, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Grzęzno, Poland
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is December (8.3 days).
Average UV index in September
Grzęzno, Poland
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Grzęzno, Poland
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Grzęzno, Poland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, November and December (8km).
Grzęzno, Poland
Weather forecast for your location
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