Dehiwala-Mount Lavinia — Water Temperature in January

Water Temperature Range

26°C

minimum

28°C

average

30°C

maximum

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

January: Climate and Swimming Opportunities

Average Night Air Temperature

22°C

Average Day Air Temperature

30°C

Precipitation Amount per Month

61 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

8 hrs

Average Wind Speed

14 km/h

Average Humidity

73%

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.