Dewey Beach Weather: May
 |
Average Day Temperature: | 66.3°F |
|
Average Night Temperature: | 59.1°F |
|
Sea Water Temperature: | 59.1°F |
|
Number of Sunny Days: | 8 days |
| Sunshine Hours: | 13.8 - 14.7 hours | |
|
Number of Rainy Days: | 1 day |
| Precipitation Totals: | 0.9 in | |
| detailed information | ||
14 day weather
forecast
forecast
| Dewey Beach |
Sea Water
Temperature
Temperature
| Dewey Beach |
Air Temperature in May, °F
The highest day temperature in May 2025 was 85°F. The lowest night temperature was 50°F. The average values for day and night temperatures during May were 70.7°F и 60.2°F respectivly.
Dewey Beach Water Sea Temperature in May, °F
The average sea surface temperature in May 2025 for Dewey Beach was 60.4°F. The maximum and minimum values were 54.0°F and 65.4°F respectively.
Sunny, Cloudy and Gloomy days
Most of the days in May are gloomy but you can also expect sunny days.
Precipitation Totals in May, in
Precipitation total in May for Dewey Beach is 0.9 in. It makes may one of the least rainy months of the year.
Wind Speed in May, mph
The average wind speed in May is 11.5 mph.
Average Sunny Hours Per Day
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 Dewey Beach in May is 6.8 hours.
Dewey Beach on the Weather Map
USA Resorts:
NAME
F°
| Chicago |  |
0 |
| Hawaii |  |
+78 |
| Honolulu | |
+78 |
| Houston | |
+46 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach | |
+80 |
| New York | |
+18 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Dewey Beach
Local time: 02:24
05 dec, friday
| 0300 |  |
32°F | SW 12 mph |
| 0600 |  |
34°F | SW 9 mph |
| 0900 | |
30°F | SW 7 mph |
| 1200 | |
32°F | SW 9 mph |
| 1500 | |
36°F | S 6 mph |
| 1800 | |
38°F | S 8 mph |
| 2100 | |
36°F | S 9 mph |
06 dec, saturday
| 0000 | |
36°F | S 11 mph |