Willemstad Weather in September

September in Willemstad brings pleasant temperatures, with daytime highs of 20°C (68°F) and nights around 12°C (54°F). Quite a bit of rainfall is expected, around 71 mm (2.8 in), so pack an umbrella.

Rainfall in Willemstad in September

Typically, you can expect about 15 days of rain this month, with 71 mm (2.8 in) on average. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.

Temperature in Willemstad in September

The temperature in Willemstad in September is perfect. Daytime highs reach 20°C (68°F), with nights dropping to 12°C (54°F). The difference between afternoon and evening temperatures is usually noticeable. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Willemstad in September

You can expect a moderate amount of sunlight, with approximately 154 hours. This means a pleasant mix of sun and overcast.

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

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

Willemstad Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 50%  

Precipitation 71 mm (2.8 in)  

Rainy days 15 days  

Humidity 84% *  

Sunshine 154 hours *  

Percentage Sunshine 34% *  

* Data from: Rotterdam, the Netherlands (28 KM, 17 Miles).

What to Wear in Willemstad in September

For Willemstad in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Willemstad 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

8/10

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 the Netherlands, check out our Willemstad's climate page.

More climate data for Willemstad

Temperature Rainfall Sunshine Humidity

See the full Willemstad climate overview or explore weather in the Netherlands.