The highest day temperature in April 2025 was 100°F. The lowest night temperature was 76°F. The average values for day and night temperatures during April were 92.1°F и 78.6°F respectivly.

The average sea surface temperature in April 2025 for Similan was 90.5°F. The maximum and minimum values were 89.6°F and 91.4°F respectively.

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

Precipitation total in April for Similan is 5.2 in.

The average wind speed in April is 5.5 mph. It makes April one of the most windless months of the year for Similan.

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 Similan in April is 8.2 hours.