Waterloo Weather in September

September is one of the perfect months to visit Waterloo, with daytime temperatures of 20°C (68°F) and lows of 11°C (52°F) at night. Do note that quite a bit of rainfall is typical, averaging around 63 mm (2.5 in).

Rainfall in Waterloo in September

You can expect rain on roughly 15 days based on historical data, averaging 63 mm (2.5 in) for the month. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.

Temperature in Waterloo in September

Waterloo in September is worth a visit. The temperature is perfect, with 20°C (68°F) during the day and 11°C (52°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Waterloo in September

You can expect a moderate amount of sunlight, with approximately 143 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Waterloo in September

Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Belgium, check out our Waterloo's climate page.

Waterloo Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 51%  

Precipitation 63 mm (2.5 in)  

Rainy days 15 days  

Humidity 82% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 143 hours *  

Percentage Sunshine *  

* Data from: Ukkel, Belgium (9 KM, 6 Miles).

What to Wear in Waterloo 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. Rain gear is recommended, you can expect wet weather on multiple days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Waterloo in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

10/10

Walking

10/10

Camping

8/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Belgium, check out our Waterloo's climate page.

More climate data for Waterloo

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Waterloo climate overview or explore weather in Belgium.