Water temperature in Aoshima in December

Is it warm enough to swim in Aoshima in December? Average water temperature in Aoshima in December is 20.8°C and therefore suitable for comfortable swimming. The warmest sea in Aoshima in December is 23.3°C, and the coldest is 18.3°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Aoshima

Changes water temperature in Aoshima in December 2025, 2024

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

Sea temperature

Sea state

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 December	22.1°C	22.6°C	20.7°C	23.3°C
2 December	21.5°C	22.3°C	20.6°C	23°C
3 December	21.1°C	22.4°C	20.3°C	22.9°C
4 December	22.4°C	22.7°C	20.5°C	22.9°C
5 December	22.2°C	22.6°C	20°C	22.6°C
6 December	21.8°C	22.5°C	20.1°C	22.8°C
7 December	21.2°C	21.9°C	19.8°C	22.7°C
8 December	21.4°C	22.1°C	20.4°C	22.6°C
9 December	21.5°C	21.2°C	19.8°C	22.1°C
10 December	21.3°C	21.4°C	19.7°C	22.2°C
11 December	21.5°C	21.4°C	19.4°C	22.2°C
12 December	21.5°C	20.2°C	19.5°C	22°C
13 December	21.2°C	20.2°C	19.3°C	22°C
14 December	21.2°C	21.3°C	19.4°C	22.5°C
15 December	20.6°C	21.6°C	19.7°C	22°C

Day	2025	2024	Min	Max
16 December	20.2°C	21.1°C	19.5°C	21.6°C
17 December	20.3°C	20.5°C	19.2°C	21.6°C
18 December	20.1°C	20.5°C	18.4°C	21.7°C
19 December		20.7°C	18.6°C	22°C
20 December		21°C	20°C	21.9°C
21 December		20.8°C	19.9°C	21.8°C
22 December		20°C	19.6°C	20.8°C
23 December		20.3°C	20°C	21.1°C
24 December		19.8°C	19°C	21.5°C
25 December		19.8°C	18.6°C	21.5°C
26 December		19.2°C	18.6°C	21.4°C
27 December		18.8°C	18.7°C	21.4°C
28 December		18.4°C	18.4°C	21.5°C
29 December		18.8°C	18.4°C	21.1°C
30 December		19.1°C	18.4°C	21.3°C
31 December		19°C	18.3°C	21.3°C

Average water temperature in Aoshima in December over a decade

2015	2016	2017	2018	2019
21.1°C	21.5°C	20.4°C	21.1°C	20.8°C

2020	2021	2022	2023	2024
21.5°C	19.9°C	20.5°C	21°C	20.8°C

Aoshima water temperature during other months:

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

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Our report for Aoshima 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