Ostional — Water Temperature in January

Water Temperature Range

25°C

minimum

28°C

average

31°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2026	2025	2024	2023
JAN 1	27°C	28°C	29°C	27°C
JAN 2	28°C	28°C	28°C	29°C
JAN 3	29°C	28°C	28°C	29°C
JAN 4	29°C	28°C	28°C	27°C
JAN 5	29°C	28°C	27°C	30°C
JAN 6	28°C	27°C	28°C	26°C
JAN 7	28°C	28°C	28°C	29°C
JAN 8	28°C	27°C	28°C	27°C
JAN 9	29°C	28°C	28°C	30°C
JAN 10	28°C	28°C	28°C	30°C
JAN 11	29°C	28°C	28°C	29°C
JAN 12	28°C	28°C	28°C	29°C
JAN 13	29°C	27°C	28°C	26°C
JAN 14	28°C	28°C	28°C	27°C
JAN 15	28°C	28°C	28°C	26°C
JAN 16	29°C	28°C	27°C	27°C
JAN 17	28°C	28°C	28°C	30°C
JAN 18	28°C	27°C	28°C	27°C
JAN 19	28°C	27°C	28°C	30°C
JAN 20	28°C	28°C	28°C	29°C
JAN 21	29°C	28°C	27°C	30°C
JAN 22	29°C	27°C	27°C	30°C
JAN 23	29°C	28°C	27°C	27°C
JAN 24	29°C	28°C	27°C	28°C
JAN 25	28°C	28°C	28°C	29°C
JAN 26	29°C	28°C	28°C	30°C
JAN 27	28°C	27°C	28°C	26°C
JAN 28	28°C	28°C	28°C	27°C
JAN 29	28°C	28°C	28°C	26°C
JAN 30	29°C	28°C	28°C	27°C
JAN 31	29°C	28°C	28°C	25°C

January: Climate and Swimming Opportunities

Average Night Air Temperature

20°C

Average Day Air Temperature

32°C

Precipitation Amount per Month

1 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

8 hrs

Average Wind Speed

18 km/h

Average Humidity

75%

At such water and air temperatures, swimming feels truly comfortable and relaxing. The warm water won’t cool you down, so you can stay in for a long time without getting chilled.