September weather forecastOpole, Poland
September
Weather in September
As the temperatures begin to decline, September in Opole marks the onset of autumn. The weather turns relatively mild and pleasant, with the heat of summer fading into memory. As the leaves begin to change colour, painting the city in warm, earthy tones, the city prepares itself for the cooler half of the year. The massive drop from the summer peak to an average high of 19.7°C (67.5°F) paves the way for a distinct change in climate.Temperature
In Opole, the beginning of September is marked by a lowered average high-temperature, shifting from August's moderately hot 25.6°C (78.1°F) to a comfortable 19.7°C (67.5°F). Throughout September, the nighttime temperature in Opole averages to a fresh 11.3°C (52.3°F).Humidity
In Opole, the average relative humidity in September is 71%.Rainfall
In September, the rain falls for 13.2 days. Throughout September, 38mm (1.5") of precipitation is accumulated. Throughout the year, in Opole, there are 160.4 rainfall days, and 450mm (17.72") of precipitation is accumulated.Snowfall
In Opole, Poland, snow does not fall in June through September.Daylight
In September, the average length of the day in Opole is 12h and 37min.On the first day of the month, sunrise is at 06:03 and sunset at 19:33. On the last day of September, sunrise is at 06:47 and sunset at 18:28 CEST.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Opole, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Opole, Poland
- Average high temperature in September: 19.7°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 (1°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (15.5°C).
The coldest month (with the lowest average low temperature) is January (-2.8°C).
Average pressure in September
Opole, Poland
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is October (1018.5mbar).
The month with the lowest atmospheric pressure is July (1014.5mbar).
Average wind speed in September
Opole, Poland
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is December (13.5km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).
Average humidity in September
Opole, 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
Opole, Poland
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is November (24mm).
Average rainfall days in September
Opole, Poland
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
Opole, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (93mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Opole, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Opole, Poland
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 3h and 36min).
Average sunshine days in September
Opole, Poland
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is October (17.1 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in September
Opole, 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
Opole, Poland
- Average cloud cover in September: 38
The months with the most cloud cover are January and February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Opole, 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).
