Monthly climate guide
Antwerp weather in September
September in Antwerp is typically mild, with average daytime highs around 21°C (69°F) and night-time lows near 11°C (51°F). The month usually brings about 52 mm of rain (some rain) and is often cloudy. Daytime highs are 3°C cooler than August and 5°C warmer than October.
What stands out in September
- It cools down fast from here: October is about 5°C cooler.
- Just 80 km apart, but Antwerp runs about 3°C warmer than Knokke-Heist this month.
- Comfortable temperatures make it easy to walk between Grote Markt and Antwerp Central Station.
- Skies are at their clearest this time of year.
Avg high
21°C
69°F
Avg low
11°C
51°F
Rainfall
52 mm
some rain
Humidity
78%
relative
Sky
59%
cloud · often cloudy
Antwerp weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 6°C / 43°F | 1°C / 33°F | 71 mm | 93% | 74% |
| February | 7°C / 45°F | 0°C / 32°F | 54 mm | 89% | 68% |
| March | 11°C / 52°F | 2°C / 35°F | 49 mm | 84% | 63% |
| April | 15°C / 60°F | 5°C / 40°F | 34 mm | 77% | 61% |
| May | 19°C / 65°F | 8°C / 46°F | 54 mm | 76% | 64% |
| June | 22°C / 71°F | 11°C / 52°F | 69 mm | 75% | 67% |
| July | 24°C / 74°F | 13°C / 56°F | 72 mm | 74% | 64% |
| August | 24°C / 74°F | 13°C / 56°F | 68 mm | 74% | 61% |
| September | 21°C / 69°F | 11°C / 51°F | 52 mm | 78% | 59% |
| October | 16°C / 60°F | 8°C / 46°F | 64 mm | 85% | 68% |
| November | 10°C / 51°F | 4°C / 39°F | 56 mm | 91% | 70% |
| December | 7°C / 45°F | 2°C / 36°F | 84 mm | 93% | 75% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A small travel umbrella, just in case
Is September a good time to visit Antwerp?
Our Antwerp guide recommends: May to September for the warmest, longest days; spring and early autumn are quieter.
Visit the Rubens House to see where the painter lived and worked, then walk to the cathedral to see his altarpieces.
Best time to visit Antwerp →Other Belgium cities in September
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Antwerp weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/belgium/antwerp/september
<a href="https://weathercompare.eu/weather/belgium/antwerp/september">Antwerp weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/belgium/antwerp" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Antwerp weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/belgium/antwerp/september">Antwerp weather in September</a> – WeatherCompare</p>
Antwerp in September: quick answers
Is September a good time to visit Antwerp?
Yes. September is one of the best months for Antwerp, with highs around 21°C and about 52 mm of rain.
How warm is Antwerp in September?
Average highs are about 21°C (69°F) and average lows about 11°C (51°F), based on 10 years of daily data.
Does it rain a lot in Antwerp in September?
Antwerp typically gets around 52 mm of rain in September — some rain.
When is the best time to visit Antwerp?
May to September for the warmest, longest days; spring and early autumn are quieter.
Figures are long-term averages for the area around Antwerp (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.