Water temperature in Horumersiel in September

Home > Germany > Horumersiel

Is it warm enough to swim in Horumersiel in September? Average water temperature in Horumersiel in September is 16.9°C and therefore is not suitable for comfortable swimming. The warmest sea in Horumersiel in September is 20.4°C, and the coldest is 14°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Horumersiel

Changes water temperature in Horumersiel in September 2025, 2024

To get an accurate forecast for the water temperature in Horumersiel for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Horumersiel, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 September	18.3°C	18.9°C	17°C	19.7°C
2 September	18.5°C	18.9°C	17.2°C	19.5°C
3 September	18.4°C	19.6°C	17.1°C	19.6°C
4 September	18.3°C	19.4°C	16.8°C	19.6°C
5 September	18.4°C	19.6°C	16.5°C	19.6°C
6 September	18.3°C	20.1°C	16.2°C	20.1°C
7 September	18.5°C	20.2°C	15.7°C	20.2°C
8 September	17.6°C	20.4°C	15.8°C	20.4°C
9 September	18.4°C	19.9°C	15.9°C	20.3°C
10 September	18.1°C	19.7°C	15.8°C	19.9°C
11 September	18.2°C	19.2°C	15.8°C	19.6°C
12 September	18°C	18.5°C	16°C	20°C
13 September	17.7°C	18.4°C	16.1°C	20.1°C
14 September	17.9°C	18°C	16°C	20.3°C
15 September	17.3°C	17.5°C	16°C	20.2°C

Day	2025	2024	Min	Max
16 September	16.8°C	17.2°C	15.8°C	19.8°C
17 September	17°C	17.4°C	15.7°C	19.4°C
18 September	16.6°C	17.1°C	15.6°C	19.1°C
19 September	16.7°C	16.4°C	15.3°C	18.8°C
20 September	16.7°C	16.9°C	15.2°C	18.6°C
21 September	16.5°C	17°C	15.1°C	18.4°C
22 September	16.4°C	16.9°C	14.8°C	18.4°C
23 September	16.1°C	17.4°C	14.8°C	17.9°C
24 September	16.1°C	17.1°C	14.8°C	17.7°C
25 September	15.8°C	16.6°C	14.8°C	18.3°C
26 September		17°C	14.7°C	17.9°C
27 September		16.6°C	14.5°C	17.5°C
28 September		16.1°C	14.4°C	17.4°C
29 September		15.9°C	14°C	17.4°C
30 September		15.6°C	14.2°C	16.8°C

Horumersiel water temp chart in September

Average water temperature in Horumersiel in September over a decade

2015	2016	2017	2018	2019
15.8°C	18.7°C	16.5°C	16.9°C	16.9°C

2020	2021	2022	2023	2024
17.1°C	17.4°C	16.9°C	18.4°C	18°C

Horumersiel sea state in September

Chart comparing the height of waves in Horumersiel in September over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Horumersiel in September

Horumersiel water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Temperature in neighboring cities

The nearest locations with the average water temperature in September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Burhave	16.9°C	13.7°C	21.3°C
Langeoog	17.2°C	14.6°C	20.8°C
Baltrum	17.2°C	14.6°C	21.1°C
Cuxhaven	17.4°C	13.9°C	21.7°C
Norderney	17.2°C	14.4°C	21.4°C
Norden	17°C	14°C	21.9°C
Helgoland	17.4°C	14.8°C	19.9°C
Juist	17.2°C	14.4°C	21.1°C
Neufelderkoog	17.2°C	13.9°C	20.8°C
Emden	16.9°C	13.6°C	20.7°C

Germany photo gallery

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

Vote for Germany best beach

Get widget or API for your website

Our report for Horumersiel is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

Region

Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature