Ostend Weather in September
September in Ostend typically sees daytime highs of 19°C (66°F) and nighttime lows of 14°C (57°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the summer season.
Rainfall in Ostend in September
Looking at the last 30 years, the data shows about 16 days with rain, averaging 85 mm (3.3 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Ostend in September
Daytime temperatures in Ostend reach 19°C (66°F) in September, dropping to 14°C (57°F) at night. September marks the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Ostend in September
You can expect a moderate amount of sunlight, with approximately 160 hours. This means a pleasant mix of sun and overcast.
Wind Speed in Ostend in September
September sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Ostend.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belgium, check out our Ostend's climate page.
Ostend Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
19°C (66°F)
Chance of Rain
53%
Precipitation
85 mm (3.3 in)
Rainy days
16 days
Humidity
86%
Windspeed
6 m/s (12 knots)
Sunshine
160 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ostend typically stay consistent throughout September, with daily highs averaging around 19°C (66°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 13°C (55°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Ostend in September
Browse day-by-day weather records for Ostend spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ostend historical weather extremes in September
According to our 49 years of weather records for Ostend, the following extremes were recorded between 1976 and 2025.
- Ostend recorded its highest September temperature of 31°C (88°F) on September 13, 2016.
- The coldest September day was on September 23, 2012, with a maximum of 11°C (52°F).
- The lowest overnight temperature recorded in September was 1°C (34°F) (September 23, 1979).
Best Places in Belgium in September
Find out more about the weather in Belgium and which places have the best travel conditions in this month. See all of Belgium in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Ostend in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Ostend in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belgium, check out our Ostend's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Ostend climate overview or explore weather in Belgium.
