Water temperature in Dover (tas) in September

Is it warm enough to swim in Dover in September? Average water temperature in Dover in September is 11.7°C and therefore is not suitable for comfortable swimming. The warmest sea in Dover in September is 13°C, and the coldest is 10.6°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Dover

Changes water temperature in Dover in September 2025, 2024

To get an accurate forecast for the water temperature in Dover for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Dover, 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	11.6°C	11.6°C	10.6°C	12.4°C
2 September	12°C	11.5°C	10.9°C	12.5°C
3 September	12.1°C	11.5°C	10.7°C	12.5°C
4 September	12°C	11.7°C	10.6°C	12.5°C
5 September	11.2°C	11.9°C	10.6°C	12.5°C
6 September		11.7°C	10.7°C	12.5°C
7 September		11.7°C	10.7°C	12.4°C
8 September		11.5°C	10.6°C	12.2°C
9 September		11.5°C	10.8°C	12.2°C
10 September		11.6°C	10.7°C	12.4°C
11 September		11.5°C	10.8°C	12.4°C
12 September		11.5°C	11°C	12.5°C
13 September		11.3°C	11.1°C	12.4°C
14 September		11.4°C	11.1°C	12.3°C
15 September		11.4°C	10.9°C	12.3°C

Day	2024	Min	Max
16 September	11.3°C	11°C	12.7°C
17 September	11.3°C	11.1°C	12.5°C
18 September	11.2°C	11.2°C	12.5°C
19 September	11.1°C	11.1°C	12.3°C
20 September	11.1°C	11.1°C	12.5°C
21 September	11.2°C	11.2°C	12.4°C
22 September	11.4°C	11.3°C	12.7°C
23 September	11.4°C	11.2°C	12.7°C
24 September	11.3°C	11°C	12.9°C
25 September	11.3°C	10.9°C	13°C
26 September	11.5°C	11°C	12.7°C
27 September	11.4°C	11°C	12.6°C
28 September	11.4°C	11.4°C	12.7°C
29 September	11.7°C	11.3°C	12.6°C
30 September	11.9°C	10.9°C	12.5°C

Average water temperature in Dover in September over a decade

2015	2016	2017	2018	2019
11.1°C	11.9°C	11.6°C	11.6°C	11.2°C

2020	2021	2022	2023	2024
11.6°C	11.6°C	11.7°C	12.1°C	11.5°C

Dover sea state in September

Chart comparing the height of waves in Dover 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.

Dover 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
Adventure Bay	11.8°C	10.5°C	13.1°C
Cockle Creek	12.1°C	10.8°C	13.1°C
Margate	11.4°C	9.7°C	12.9°C
Coningham	11.4°C	9.7°C	12.9°C
Snug	11.4°C	9.7°C	12.9°C
Blackmans Bay	11.3°C	9.4°C	12.9°C
South Arm	11.3°C	9.4°C	12.9°C
Hobart	12.1°C	10.7°C	13.3°C
Kingston	11.3°C	9.2°C	12.9°C
Taroona	11.2°C	9.1°C	12.9°C

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Our report for Dover 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.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature