The highest day temperature in December 2023 was 90°F. The lowest night temperature was 78°F. The average values for day and night temperatures during December were 85.8°F и 79.7°F respectivly.

The average sea surface temperature in December 2023 for Unawatuna was 88.1°F. The maximum and minimum values were 87.4°F and 88.6°F respectively.

Most of the days in December are cloudy but you can also expect sunny or gloomy days.

Precipitation total in December for Unawatuna is 5.9 in.

The average wind speed in December is 5.7 mph. It makes December one of the most windless months of the year for Unawatuna.

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 Unawatuna in December is 6.9 hours.