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 arrival of September is marked by a minor reduction in average high-temperature, sliding from an agreeable 21.6°C (70.9°F) in August to a refreshing 17.8°C (64°F). September registers an average low temperature of 12.9°C (55.2°F) in Stary Jarosław, subtly lower than the daytime maximum.Humidity
In September, the average relative humidity is 75%.Rainfall
In Stary Jarosław, during September, the rain falls for 11.7 days and regularly aggregates up to 35mm (1.38") of precipitation. In Stary Jarosław, during the entire year, the rain falls for 141 days and collects up to 379mm (14.92") of precipitation.Snowfall
In Stary Jarosław, Poland, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 43min.On the first day of the month, sunrise is at 06:02 and sunset at 19:44. On the last day of September, in Stary Jarosław, sunrise is at 06:55 and sunset at 18:32 CEST.
Sunshine
In September, the average sunshine in Stary Jarosław is 8.5h.UV index
In Stary Jarosław, 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 rays for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Act with care - The need to guard against sun damage is communicated. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Stary Jarosław?
What is the average humidity in September in Stary Jarosław?
How much does it rain in Stary Jarosław in September?
When it does not snow in Stary Jarosław?
What is the average length of the day in September in Stary Jarosław?
When are sunrise and sunset in September in Stary Jarosław?
How long on average sun shines in September in Stary Jarosław?
How high is the UV index in September in Stary Jarosław?
Average temperature in September
Stary Jarosław, Poland
- Average high temperature in September: 17.8°C
The warmest month (with the highest average high temperature) is August (21.6°C).
The month with the lowest average high temperature is January (1.7°C).
- Average low temperature in September: 12.9°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is January (-0.7°C).
Average pressure in September
Stary Jarosław, Poland
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is October (1016.2mbar).
The month with the lowest atmospheric pressure is December (1012.7mbar).
Average wind speed in September
Stary Jarosław, Poland
- Average wind speed in September: 18.9km/h
The windiest month (with the highest average wind speed) is December (23.7km/h).
The calmest month (with the lowest average wind speed) is June (16.3km/h).
Average humidity in September
Stary Jarosław, Poland
- Average humidity in September: 75%
The months with the highest relative humidity are January, February and December (85%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Stary Jarosław, Poland
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is July (41mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Stary Jarosław, Poland
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is December (15.2 days).
The month with the least rainy days is April (8.9 days).
Average snowfall in September
Stary Jarosław, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (54mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Stary Jarosław, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Stary Jarosław, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 3h and 0min).
Average sunshine days in September
Stary Jarosław, Poland
- Average sunshine days in September: 16 days
The month with the most sunshine days is April (18.8 days).
The month with the least sunshine days is December (9.5 days).
Average UV index in September
Stary Jarosław, Poland
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Stary Jarosław, Poland
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Stary Jarosław, Poland
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
