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Surf Forecasts:
Bethany surfForecast / Delaware / USA
48hr Weather and Surf, issued 1 am Thursday 21 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
15.8° C
(Which is 1.7°C warmer than normal for this time of year)How big are the waves at Bethany today?
The current surf forecast for Bethany at 8AM is: 0.6m 6s primary swell from a South-southeast direction and 0.4m 9s secondary swell from a Southeast direction, 0.5m 3s secondary swell from a Northeast direction (forecast issued at 01:00am May 21). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 1.5ft (0.4m) | 9s |
| Afternoon (21 May) | 3.5ft (1.0m) | 4s |
| Evening (21 May) | 3.5ft (1.1m) | 5s |
Table - waves today at Bethany. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 22mm), heaviest during Fri afternoon. Very mild (max 17°C on Thu morning, min 11°C on Fri afternoon). Winds increasing (light winds from the NE on Thu morning, strong winds from the ENE by Sat morning). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 6 | SSE 6 | SE 9 | SE 9 | SE 9 | NE 5 | NE 5 | SE 8 | NE 5 | ENE 5 | ENE 6 | ENE 6 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 8 | E 8 | |
50 | 36 | 25 | 20 | 26 | 61 | 66 | 44 | 57 | 69 | 154 | 265 | 311 | 381 | 352 | 392 | 368 | 367 | 357 | 378 | 381 | 515 | 514 | 502 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | on | on | on | on | on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 11:43PM1.39m | 12:32PM1.17m | 00:43AM1.32m | 1:31PM1.17m | 1:42AM1.24m | 2:28PM1.18m | ||||||||||||||||||
Low Tide | 6:17AM-0.04m | 6:21PM0.12m | 7:16AM0.02m | 7:27PM0.18m | 8:18AM0.06m | 8:37PM0.21m | ||||||||||||||||||
 | |  |  |  | | |  | |  |  | | | | | | | | | | | | | | |
 | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:41 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:08 | — | — | — | — | — | — | — | 8:09 | — | — | — | — | — | — | — | 8:10 | — |
1 | 1 | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 5 | 3 | 2 | 2 | 2 | 1 | — | — | 1 | 1 | 1 | |
Temp °C | 21 | 20 | 17 | 16 | 15 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 13 | 12 | 12 | 11 | 12 | 12 | 12 | 13 |
23 | 20 | 15 | 12 | 9 | 7 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 4 | 3 | 5 | 8 | 6 | 4 | 3 | 5 | 6 | 5 | 6 | |
Swell 1 Height (m) Direction Period (s) | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | — | SE 13 | SE 13 | SE 13 | SSE 7 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | — | — | — |
 kJ | 50 | 36 | 25 | 18 | 13 | 49 | 46 | 44 | 43 | 32 | 46 | — | 7 | 7 | 7 | 15 | 7 | 7 | 7 | 7 | 7 | — | — | — |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | E 15 | SE 14 | SE 14 | SE 14 | E 14 | SE 14 | — | — | — | — | SE 13 | — | SE 13 | — | — | — | — | — | — |
| kJ | 21 | 21 | 21 | 20 | 20 | 4 | 8 | 8 | 8 | 4 | 7 | — | — | — | — | 7 | — | 7 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 14 | E 14 | E 14 | E 14 | E 14 | SE 14 | SE 14 | — | — | — | SE 13 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 4 | 4 | 4 | 4 | 4 | 8 | 8 | — | — | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 6 | SSW 6 | NE 3 | NE 4 | NE 4 | NE 5 | NE 5 | ENE 5 | NE 5 | ENE 5 | ENE 6 | ENE 6 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 8 | E 8 |
| kJ | 83 | 40 | 4 | 8 | 26 | 61 | 66 | 44 | 57 | 69 | 154 | 265 | 311 | 381 | 352 | 392 | 368 | 367 | 357 | 378 | 381 | 515 | 514 | 502 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 10 | 197 | 256 | 252 | 256 | 1051 | 248 | 256 | 298 | 309 | 286 | 309 | 298 | 315 | 315 | 179 | 179 | 327 | 330 | 179 | 179 | 685 | 601 |
Best forecast wave conditions in Delaware | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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