Bethany Beach (DE) Weather & Climate: Best Time to Visit

Visitors to Bethany Beach can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 30°C (86°F) in July, the warmest time of the year, to a chilly 7°C (45°F) during cooler months like January.

At night, you can expect temperatures ranging from 21°C (70°F) in July to around -2°C (28°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Bethany Beach is known for its substantial rain/snowfall, with annual precipitation reaching 1188 mm (47 in). While rainfall varies throughout the year, each season offers its own charm. October brings wetter days averaging 139 mm (5.5 in) of precipitation, spread over 11 rainy days.

In contrast, the driest month February experiences a drier climate, with about 76 mm (3 in) of rainfall spread across 10 rainy days. For more details, please visit our Bethany Beach Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

The mean water temperature over the year ranges from 1°C (34°F) in February to 22°C (72°F) in August.

Water temperature over the year

The relative humidity is high throughout the year in Bethany Beach.

The city experiences its highest humidity in August, reaching 76%. In March, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year