Surf Forecasts:
Rehoboth Main surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 2AM (local time) - 1.5ft (0.5m), 11s period, SE swell with cross-offshore winds.
- Most powerful swell: Saturday 22 Aug, 2PM (local time) - 3.5ft (1.1m), 5s period, E swell with 61 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 2AM (local time) - 1.5ft (0.5m), 11s period with SE swell.
Best Forecast Surf Conditions for Rehoboth Main this week:
The surf forecast for Rehoboth Main over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 2AM. The primary swell is predicted to be 0.5m and 11s period with a secondary swell of 0.1m and 4s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Rehoboth Main in the next 16 days are 1.1m 5s and forecast to arrive on Saturday (Aug 22) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Sunday (Aug 23) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 19th Aug) | 1.5ft (0.5m) 11s |
| Best Surf | 2AM (Wed 19th Aug) | 1.5ft (0.5m) 11s |
| Most Powerful | 2PM (Sat 22nd Aug) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Rehoboth Main over the next 16 days.
The Lowdown
Alright folks, it’s Rusty here. Let’s cut straight to it. I’ve had a proper look at the charts for the next couple of weeks, and honestly, it’s a pretty grim run for Rehoboth Main (Rehoboth-Main). There are no standout surfs on offer anywhere in the 16-day window. None. So, let’s break down what’s going on because there’s a long stretch of small, sloppy, or just plain un-surfable conditions ahead.
The water temp is reading about 78°, which feels a touch warmer than normal for this time of year – that’s about the only nice thing going on.
Tuesday 18 August kicks it all off with a tiny 1ft SE windswell, period a weak 7 seconds. The combined energy is a pathetic 26, and it’s cross-shore, just making for poor little crumbly waves. Not worth paddling out.
Wednesday 19 August is more of the same, 1ft, but the period bumps up a bit to 10 seconds. Winds go cross-offshore in the morning, so it *looks* clean from the beach, but there’s just no push. Combined energy is still only 34.
We hit a proper flat spell from Thursday 20 August right through Monday 25 August. The swell drops to 0.7ft for most of this stretch. The wind is all over the place – onshore, cross-onshore, and even a bit of offshore on Sunday the 23rd – but it doesn’t matter because there’s no wave to ride. Combined energy values barely scrape into double digits (8 to 23). This is a solid week of flat water.
Wednesday 26 August teases us with a brief moment of hope. The swell is still tiny at 0.7ft, but check this: the period comes in at a very long 16 seconds, and the morning is glassy. The combined energy hits 58, which is still weak, but that long period makes it *just* surfable in a very ordinary, gutless way. It’s a session for a longboard and absolutely zero expectations. The afternoon gets messy.
From Thursday 27 August all the way through Wednesday 02 September, we’re looking at a lot of small, junky swell in the 1.0ft to 2ft range. Winds are cross or cross-onshore, creating chop. There’s a bit of a bump in energy on Sunday 30 August when the combined energy hits 220 (moderate) with a 3ft SE swell, but the period is a short 12 seconds and the wind is cross-onshore, making it a choppy, blown-out mess. Not one for the paddle surfer – that’s more of a kite session with that cross-onshore wind and moderate energy.
To wrap it up, this stretch is a proper blank run for Rehoboth Main. It happens sometimes. The silver lining is that with a mostly exposed beach, it doesn’t stay poor forever, and forecasts can shift. But for now, leave the board in the car.
Rusty.
Short Range ForecastHeavy rain (total 25mm), heaviest during Thu afternoon. Warm (max 29°C on Wed afternoon, min 20°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 32mm), heaviest during Sun morning. Warm (max 27°C on Sun afternoon, min 19°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SE 7 | SE 7 | SE 11 | SE 10 | SE 9 | SE 9 | ESE 8 | ESE 8 | SSE 4 | ESE 9 | E 4 | ESE 9 | E 5 | ENE 5 | S 5 | ENE 6 | SSE 5 | SSE 5 | SSE 6 | SSE 6 | ESE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 13 | 15 | 57 | 34 | 30 | 20 | 7 | 7 | 7 | 7 | 11 | 8 | 45 | 57 | 23 | 12 | 8 | 8 | 16 | 13 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-on | cross-on | on | on | on | on | on | cross-off | off | off | cross-off | cross-off | cross |
High Tide | 12:39PM1.28m | 00:54AM1.02m | 1:30PM1.23m | 1:45AM0.93m | 2:27PM1.20m | 2:41AM0.87m | 3:29PM1.20m | 3:43AM0.87m | 4:29PM1.22m | 4:42AM0.90m | 5:24PM1.27m | 5:34AM0.95m | 6:11PM1.33m | ||||||||
Low Tide | 7:02PM0.26m | 7:01AM0.21m | 7:59PM0.35m | 7:49AM0.28m | 8:59PM0.42m | 8:41AM0.32m | 10:01PM0.45m | 9:36AM0.33m | 11:01PM0.45m | 10:33AM0.31m | 11:53PM0.41m | 11:26AM0.26m | 00:34AM0.35m | ||||||||
 |  |  | | |  | | | | | | |  |  |  | | | | | | | |
 | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — |
mm | — | 1 | 1 | — | — | — | — | 13 | 10 | — | — | — | — | 6 | 2 | 11 | 9 | 4 | — | — | — |
Temp °C | 25 | 25 | 25 | 26 | 29 | 28 | 27 | 28 | 22 | 21 | 22 | 22 | 23 | 22 | 23 | 22 | 27 | 25 | 22 | 26 | 25 |
Feels °C | 28 | 28 | 28 | 26 | 29 | 28 | 28 | 31 | 22 | 19 | 20 | 21 | 21 | 21 | 24 | 24 | 27 | 24 | 19 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 7 | SE 11 | SE 10 | SE 9 | SE 9 | ESE 8 | ESE 8 | SSE 4 | SE 4 | ESE 9 | ESE 4 | S 4 | ESE 8 | ENE 6 | ENE 6 | SSE 5 | SSE 5 | SSE 6 | SSE 6 | SSE 6 |
| kJ | 13 | 15 | 57 | 34 | 30 | 20 | 7 | 7 | 5 | 4 | 8 | 8 | 2 | 6 | 18 | 12 | 8 | 8 | 16 | 12 | 6 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SE 12 | NE 4 | — | NE 4 | — | SE 5 | E 7 | ESE 8 | ESE 9 | — | ESE 9 | SE 13 | SSE 4 | SSE 5 | SSE 4 | ENE 6 | SSE 6 | ESE 12 | ESE 12 | ESE 11 |
| kJ | 7 | 5 | 1 | — | 1 | — | 1 | 1 | 7 | 7 | — | 7 | 7 | 2 | 8 | 7 | 7 | 4 | 14 | 13 | 12 |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 9 | — | — | — | — | — | — | E 6 | E 7 | E 7 | — | SE 13 | SE 13 | ESE 8 | ESE 8 | E 8 | ENE 5 | E 7 | E 6 | — |
| kJ | 6 | 3 | — | — | — | — | — | — | 1 | 1 | 1 | — | 7 | 7 | 6 | 6 | 4 | 3 | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | — | ENE 2 | — | — | — | S 3 | — | SSE 3 | — | NE 3 | E 4 | NE 4 | E 5 | ENE 5 | S 5 | — | S 5 | — | NW 3 | — | — |
| kJ | — | 1 | — | — | — | 1 | — | 1 | — | 5 | 11 | 4 | 45 | 57 | 23 | — | 37 | — | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 261 | 347 | 0 | 191 | 525 | 560 | 356 | 630 | 390 | 470 | 2600 | 470 | 347 | 347 | 525 | 520 | 165 | 11 | 55 | 11 | 125 |
Best forecast wave conditions in Delaware | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Rehoboth Main Surf forecast
The above surf forecast table for Rehoboth Main provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rehoboth Main can be found by selecting the local surf guide option on the grey menu. Our Rehoboth Main surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Rehoboth Main) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Rehoboth Main may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Rehoboth Main is 41 km (25 miles) from Ocean City. If you plan a vacation in Delaware, look for hotels and other accommodation in Ocean City. Ocean City has rooms for a wide range of budgets as well as car hire and transport links.
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