Grimonster Weather in September

September in Grimonster sees daytime temperatures around 19°C (66°F) and lows of 10°C (50°F) at night. With around 81 mm (3.2 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Grimonster in September

On average, there are about 16 days with rain during this month, averaging 81 mm (3.2 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Grimonster in September

Grimonster in September gets highs of 19°C (66°F) during the day and drops to 10°C (50°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 10°C (50°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Grimonster in September

The area enjoys a moderate level of sunlight, with around 160 hours. It's a good balance between sunny and cloudy days.

If you prefer dry days with pleasant temperatures, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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

Grimonster Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 19°C (66°F)  

Chance of Rain 53%  

Precipitation 81 mm (3.2 in)  

Rainy days 16 days  

Humidity 88% *  

Sunshine 160 hours *  

Percentage Sunshine *  

* Data from: Botrange, Belgium (34 KM, 21 Miles).

What to Wear in Grimonster in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Grimonster in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

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 Grimonster's climate page.

More climate data for Grimonster

Temperature Rainfall Sunshine Humidity

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