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Bethany surfForecast / Delaware / USA
48hr Weather and Surf, issued 1 am Monday 18 May 2026 EDTForecast update in hr min s Forecast update imminent
Bethany surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Bethany sea temperature is
13.9° C
(Which is normal for this time of year)How big are the waves at Bethany today?
The current surf forecast for Bethany at 9AM is: 0.4m 8s primary swell from a Southeast direction (forecast issued at 01:00am May 18). An open ocean swell of 0.5m 5s is not directed at the surf break, a second open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 1.5ft (0.4m) | 8s |
| Afternoon (18 May) | 1.5ft (0.4m) | 8s |
| Evening (18 May) | 1.5ft (0.4m) | 8s |
Table - waves today at Bethany. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 30°C on Wed afternoon, min 18°C on Wed night). Winds decreasing (fresh winds from the S on Tue night, calm by Wed night). | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SSE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 9 | SE 9 | SE 9 | ESE 8 | SE 8 | ESE 8 | ESE 8 | SE 6 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 9 | SSE 5 | |
52 | 21 | 15 | 15 | 15 | 15 | 16 | 16 | 17 | 31 | 39 | 39 | 28 | 18 | 28 | 26 | 40 | 26 | 31 | 32 | 32 | 33 | 22 | 45 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | on | |
High Tide | 9:33AM1.23m | 9:45PM1.53m | 10:30AM1.21m | 10:43PM1.47m | 11:31AM1.18m | |||||||||||||||||||
Low Tide | 3:39AM-0.16m | 3:36PM-0.06m | 4:30AM-0.14m | 4:28PM-0.02m | 5:22AM-0.10m | 5:22PM0.04m | ||||||||||||||||||
 | |  | | | | | | | | | | | | | | | | | | | |  |  | |
 | — | 5:46 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:07 | — | — | — | — | — | — | — | 8:07 | — | — | — | — | — | — | — | 8:07 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 25 | 25 | 23 | 27 | 28 | 27 | 24 | 23 | 23 | 22 | 22 | 27 | 29 | 27 | 24 | 23 | 23 | 22 | 22 | 27 | 30 | 28 | 22 | 20 |
24 | 25 | 24 | 28 | 26 | 24 | 21 | 21 | 23 | 22 | 21 | 26 | 26 | 23 | 20 | 20 | 21 | 20 | 20 | 25 | 28 | 24 | 21 | 21 | |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SE 8 | S 5 | S 5 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 9 | SE 9 | SE 9 | ESE 8 | SE 8 | ESE 8 | ESE 8 | SE 6 | ESE 8 | ESE 9 | S 5 | ESE 9 | ESE 9 | SE 9 | SSE 5 |
 kJ | 52 | 21 | 11 | 13 | 15 | 15 | 16 | 16 | 17 | 31 | 39 | 39 | 28 | 18 | 28 | 26 | 40 | 26 | 31 | 28 | 32 | 33 | 22 | 45 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | SE 8 | SE 8 | E 8 | E 7 | E 17 | E 13 | E 13 | E 13 | E 13 | E 13 | E 13 | E 13 | E 16 | E 16 | SE 9 | E 15 | E 15 | ESE 9 | E 15 | E 15 | E 15 | SE 9 |
| kJ | 1 | 1 | 15 | 15 | 1 | 1 | 6 | 4 | 3 | 3 | 3 | 3 | 3 | 4 | 5 | 5 | 20 | 5 | 4 | 32 | 4 | 4 | 4 | 22 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 15 | E 8 | E 7 | E 18 | E 14 | E 18 | E 17 | E 17 | E 17 | E 16 | — | E 16 | E 16 | E 13 | — | E 16 | — | — | E 15 | E 12 | E 12 | E 12 | E 15 |
| kJ | 4 | 4 | 1 | 1 | 6 | 4 | 6 | 6 | 5 | 6 | 5 | — | 5 | 5 | 3 | — | 5 | — | — | 4 | 3 | 3 | 3 | 4 |
Wind waves Height (m) Direction Period (s) | — | S 4 | SSW 5 | — | S 5 | S 4 | S 5 | S 5 | S 5 | S 5 | S 5 | S 5 | S 5 | S 5 | S 5 | S 6 | SSW 6 | S 6 | S 6 | S 6 | S 5 | S 5 | S 5 | S 6 |
| kJ | — | 9 | 24 | — | 13 | 30 | 34 | 37 | 52 | 47 | 37 | 34 | 42 | 60 | 54 | 75 | 40 | 64 | 39 | 64 | 29 | 38 | 44 | 86 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 21 | 14 | 35 | 437 | 1043 | 1043 | 597 | 21 | 192 | 0 | 0 | 225 | 225 | 1080 | 233 | 0 | 229 | 28 | 28 | 21 | 177 | 6 | 17 |
Best forecast wave conditions in Delaware | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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