The highest day temperature in January 2025 was 88°F. The lowest night temperature was 75°F. The average values for day and night temperatures during January were 83.6°F и 77.2°F respectivly.

The average sea surface temperature in January 2025 for Kalutara was 85.1°F. The maximum and minimum values were 84.4°F and 86.2°F respectively.

Most of the days in January are sunny but you can also expect cloudy and gloomy days.

Precipitation total in January for Kalutara is 3.4 in. It makes january one of the least rainy months of the year.

The average wind speed in January is 6.4 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Kalutara in January is 7.6 hours.