Weather in Dewey Beach: June
 |
Average day temperature: | 74.9°F |
| Average night temperature: | 67.6°F | |
 |
Sea water temperature: | 68.0°F |
 |
Number of sunny days: | 14 days |
| Day length: | 14.7 - 14.9 hours | |
 |
Number of rainy days: | 2 days |
| Precipitation totals: | 1.0 in. | |
| more information | ||
forecast
| Dewey Beach |
temperature
| Dewey Beach |
Air temperature in June, °F
The highest day temperature during June of 2025 was 91°F. At the same time the lowest night temperature was 52°F. Daily and nightly averages during June were 78.5°F and 68.8°F.
Sea water temperature in Dewey Beach in June, °F
The average sea water temperature in June of 2025 was 69.9°F. The highest and lowest sea temperatures during the month were 79.7°F and 62.2°F.
Mostly all days in June are sunny but cloudy days are also possible.
Precipitation total in June, in.
Precipitation total value in Dewey Beach in June is 1.0 in. Other months of the year show relatively similar values.
The average wind speed value in June is 10.0 mph It makes June one of the least windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in June is: 9.0.
Best time for vacation in Dewey Beach
Dewey Beach on a weather map
9 mph
7 mph
9 mph
6 mph
8 mph
9 mph
11 mph
10 mph
