Water temperature in Ios island in January

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Is it warm enough to swim in Ios island in January? Average water temperature in Ios island in January is 16.8°C and therefore is not suitable for comfortable swimming. The warmest sea in Ios island in January is 19.1°C, and the coldest is 14.9°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Ios island

Changes water temperature in Ios island in January 2025, 2024

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

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 January	17.6°C	19.1°C	15.9°C	19.1°C
2 January	17.5°C	19°C	16°C	19°C
3 January	17.6°C	18.9°C	16°C	18.9°C
4 January	17.5°C	19.1°C	15.7°C	19.1°C
5 January	18°C	19°C	15.6°C	19°C
6 January	17.8°C	19°C	15.6°C	19°C
7 January	17.6°C	18.5°C	15.1°C	18.5°C
8 January	17.8°C	18.5°C	15.2°C	18.5°C
9 January	18.1°C	18.5°C	15.3°C	18.5°C
10 January	18.1°C	18.3°C	15.3°C	18.3°C
11 January	17.7°C	18.2°C	15.2°C	18.4°C
12 January	18°C	18.2°C	15.3°C	18.2°C
13 January	17.8°C	18.1°C	15.1°C	18.3°C
14 January	17.7°C	17.9°C	15.1°C	18°C
15 January	17.8°C	17.7°C	15.2°C	18°C

Day	2025	2024	Min	Max
16 January	18°C	17.7°C	15.2°C	18°C
17 January	18°C	17.7°C	15.1°C	18°C
18 January	18°C	17.8°C	15.2°C	18°C
19 January	18°C	17.7°C	15.2°C	18°C
20 January	17.8°C	17.8°C	15°C	17.8°C
21 January	17.7°C	17.7°C	15.7°C	17.7°C
22 January	17.8°C	17.8°C	15.4°C	17.8°C
23 January	17.7°C	18.1°C	15.5°C	18.1°C
24 January	17.6°C	18.1°C	15.3°C	18.1°C
25 January	17.9°C	17.9°C	15°C	17.9°C
26 January	17.8°C	17.8°C	15.4°C	17.8°C
27 January	17.6°C	17.7°C	15.5°C	17.7°C
28 January	17.9°C	17.7°C	15°C	17.9°C
29 January	18.2°C	17.7°C	14.9°C	18.2°C
30 January	17.9°C	17.6°C	14.9°C	17.9°C
31 January	18.1°C	17.3°C	14.9°C	18.1°C

Average water temperature in Ios island in January over a decade

2016	2017	2018	2019	2020
16.4°C	16°C	16.4°C	16.9°C	17.1°C

2021	2022	2023	2024	2025
17.6°C	17.3°C	17.4°C	18.1°C	17.8°C

Ios island sea state in January

Chart comparing the height of waves in Ios island in January 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.

Ios island 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 January. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Mylopotas	16.8°C	14.9°C	19.1°C
Sikinos	16.7°C	14.7°C	19°C
Thirasia	16.9°C	14.9°C	18.7°C
Thira	17°C	15°C	18.9°C
Fira	17°C	15°C	18.9°C
Megalochori	17°C	14.9°C	19°C
Karterados	17°C	14.9°C	19°C
Plaka Beach	16.6°C	14.9°C	18.7°C
Akrotiri	16.9°C	14.9°C	18.9°C
Mikri Vigla	16.7°C	14.9°C	18.7°C

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Our report for Ios island 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