The highest day temperature in April 2025 was 45°F. The lowest night temperature was 26°F. The average values for day and night temperatures during April were 36.2°F и 35.6°F respectivly.

The average sea surface temperature in April 2025 for Sillamäe was 37.2°F. The maximum and minimum values were 32.6°F and 41.2°F respectively.

Most of the days in April are gloomy but you can also expect sunny days.

Precipitation total in April for Sillamäe is 1.7 in. It makes april one of the least rainy months of the year.

The average wind speed in April is 9.6 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 Sillamäe in April is 6.4 hours.