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 September commences, the average high-temperature shows a reduction, transitioning from a warm 23.7°C (74.7°F) in August to a refreshing 18.3°C (64.9°F). In Stary Olsztyn, in September, the average low-temperature is a frosty 9.8°C (49.6°F).Humidity
In September, the average relative humidity is 75%.Rainfall
In Stary Olsztyn, in September, during 13.5 rainfall days, 29mm (1.14") of precipitation is typically accumulated. Throughout the year, there are 155.1 rainfall days, and 414mm (16.3") of precipitation is accumulated.Snowfall
In Stary Olsztyn, Poland, snow does not fall in June through September.Daylight
In Stary Olsztyn, the average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 05:47 and sunset at 19:27. On the last day of the month, sunrise is at 06:38 and sunset at 18:16 CEST.
Sunshine
In Stary Olsztyn, the average sunshine in September is 7.7h.UV index
In Stary Olsztyn, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Stary Olsztyn in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Stary Olsztyn?
What is the UV index reading in September?
Average temperature in September
Stary Olsztyn, Poland
- Average high temperature in September: 18.3°C
The warmest month (with the highest average high temperature) is August (23.7°C).
The month with the lowest average high temperature is January (-1.1°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is January (-4.7°C).
Average pressure in September
Stary Olsztyn, Poland
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is October (1017.4mbar).
The month with the lowest atmospheric pressure is July (1013.2mbar).
Average wind speed in September
Stary Olsztyn, Poland
- Average wind speed in September: 11.3km/h
The windiest month (with the highest average wind speed) is December (13.7km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).
Average humidity in September
Stary Olsztyn, Poland
- Average humidity in September: 75%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (70%).
Average rainfall in September
Stary Olsztyn, Poland
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is July (53mm).
The driest months (with the least rainfall) are March and April (22mm).
Average rainfall days in September
Stary Olsztyn, Poland
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (19.9 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in September
Stary Olsztyn, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (132mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Stary Olsztyn, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stary Olsztyn, 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 30min).
- Average sunshine in September: 7h 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 36min).
Average sunshine days in September
Stary Olsztyn, Poland
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is October (16.9 days).
The month with the least sunshine days is July (9 days).
Average UV index in September
Stary Olsztyn, Poland
- Average UV index in September: 3
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, February, November and December (UV index 1).
Average cloud cover in September
Stary Olsztyn, Poland
- Average cloud cover in September: 44
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Stary Olsztyn, Poland
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January and February (7km).
