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 comes with a decrease in the average high-temperature, falling from a warm 23.9°C (75°F) in August to an enjoyable 18.9°C (66°F). In September, the temperature drops to an average of 10.6°C (51.1°F) at night.Humidity
The average relative humidity in September in Ilawa is 73%.Rainfall
In Ilawa, in September, during 8.3 rainfall days, 20mm (0.79") of precipitation is typically accumulated. Throughout the year, there are 124.3 rainfall days, and 298mm (11.73") of precipitation is accumulated.Snowfall
June through October are months without snowfall in Ilawa, Poland.Daylight
In Ilawa, the average length of the day in September is 12h and 41min.On the first day of September in Ilawa, Poland, sunrise is at 05:51 and sunset at 19:31. On the last day of the month, sunrise is at 06:42 and sunset at 18:20 CEST.
Sunshine
In Ilawa, Poland, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Ilawa is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Ilawa?
What is the average humidity in September in Ilawa?
How much does it rain in Ilawa in September?
When it does not snow in Ilawa?
How many hours of daylight does Ilawa have in September?
When is the sunrise / sunset in September in Ilawa?
How long on average sun shines in September in Ilawa?
How high is the UV index in September in Ilawa?
Average temperature in September
Ilawa, Poland
- Average high temperature in September: 18.9°C
The warmest month (with the highest average high temperature) is August (23.9°C).
The month with the lowest average high temperature is January (-0.2°C).
- Average low temperature in September: 10.6°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 (-3.6°C).
Average pressure in September
Ilawa, Poland
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is October (1017.1mbar).
The month with the lowest atmospheric pressure is July (1013.3mbar).
Average wind speed in September
Ilawa, Poland
- Average wind speed in September: 12km/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 (10.9km/h).
Average humidity in September
Ilawa, 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 (68%).
Average rainfall in September
Ilawa, Poland
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is July (40mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Ilawa, Poland
- Average rainfall days in September: 8.3 days
The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in September
Ilawa, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (74mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Ilawa, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ilawa, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Ilawa, Poland
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is February (13 days).
Average UV index in September
Ilawa, 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 and November (UV index 1).
Average cloud cover in September
Ilawa, Poland
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Ilawa, Poland
- 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).
