The temperatures in Greetsiel in September are usually low and can range between 12°C and 18°C.
You can expect rain for roughly half of the month of September in Greetsiel. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Greetsiel in September 2026.
If you’re planning to visit Greetsiel in the near future, we highly recommend that you review the 14 day weather forecast for Greetsiel before you arrive.
Temperatures
18° / 12°
Rainy Days
8
Snowy Days
0
Dry Days
22
Rainfall
65
mm
Sun Hours
4.7
Hrs
