The highest day temperature in March 2025 was 78°F. The lowest night temperature was 24°F. The average values for day and night temperatures during March were 51.5°F и 42.7°F respectivly.

The average sea surface temperature in March 2025 for Bethany Beach was 44.2°F. The maximum and minimum values were 39.0°F and 49.4°F respectively.

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

Precipitation total in March for Bethany Beach is 1.2 in. It makes march one of the most rainy months of the year.

The average wind speed in March is 13.5 mph. It makes March the most windy month of the year for Bethany Beach.

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 Bethany Beach in March is 6.6 hours.