The highest day temperature in January 2025 was 66°F. The lowest night temperature was 56°F. The average values for day and night temperatures during January were 62.8°F и 61.7°F respectivly.

The average sea surface temperature in January 2025 for Sliema was 64.8°F. The maximum and minimum values were 63.4°F and 66.2°F respectively.

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

Precipitation total in January for Sliema is 1.6 in.

The average wind speed in January is 16.8 mph. It makes January the most windy month of the year for Sliema.

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 Sliema in January is 6.4 hours.