The highest day temperature in July 2025 was 93°F. The lowest night temperature was 71°F. The average values for day and night temperatures during July were 84.1°F и 77.4°F respectivly.

The average sea surface temperature in July 2025 for Bethany Beach was 78.4°F. The maximum and minimum values were 76.2°F and 81.0°F respectively.

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

Precipitation total in July for Bethany Beach is 1.6 in. It makes july the most rainy month of the year.

The average wind speed in July is 9.0 mph. It makes July the most windless 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 July is 8.5 hours.