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 shift from August to September corresponds with a decrease in the average high-temperature, down to an agreeable 20.5°C (68.9°F) from a moderately hot 26.3°C (79.3°F). Throughout September nights, Ostende registers an average low-temperature of 11.4°C (52.5°F).Humidity
In September, the average relative humidity in Ostende is 70%.Rainfall
In Ostende, during September, the rain falls for 11.5 days and regularly aggregates up to 36mm (1.42") of precipitation. In Ostende, during the entire year, the rain falls for 158.1 days and collects up to 459mm (18.07") of precipitation.Snowfall
May through September are months without snowfall in Ostende.Daylight
The average length of the day in September in Ostende is 12h and 35min.On the first day of September in Ostende, sunrise is at 06:13 and sunset at 19:36. On the last day of the month, sunrise is at 06:53 and sunset at 18:36 CEST.
Sunshine
In Ostende, the average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index in Ostende is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Ostende?
What is the average humidity in September in Ostende?
How many days does it rain in September in Ostende?
When it does not snow in Ostende?
Does it snow in Ostende in September?
How many hours of daylight does Ostende have in September?
When is the sunrise / sunset in September in Ostende?
How many hours of sunshine does Ostende have in September?
What is the UV index reading in September in Ostende?
Average temperature in September
Ostende, Austria
- Average high temperature in September: 20.5°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (2°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is January (-2.8°C).
Average pressure in September
Ostende, Austria
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1020.3mbar).
The month with the lowest atmospheric pressure is June (1015.2mbar).
Average wind speed in September
Ostende, Austria
- Average wind speed in September: 10.8km/h
The windiest month (with the highest average wind speed) is February (13.7km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).
Average humidity in September
Ostende, Austria
- Average humidity in September: 70%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Ostende, Austria
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is May (66mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Ostende, Austria
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is October (10.4 days).
Average snowfall in September
Ostende, Austria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (107mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Ostende, Austria
- 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 May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ostende, Austria
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Ostende, Austria
- Average sunshine days in September: 16 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (8.3 days).
Average UV index in September
Ostende, Austria
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Ostende, Austria
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Ostende, Austria
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (8km).
