Surf Forecasts:
Compton Bay surf forecast from 18 Aug 2026:
- Best quality surf: Friday 21 Aug, 4AM (local time) - 2.5ft (0.8m), 5s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 7PM (local time) - 6ft (1.8m), 6s period, WSW swell with 226 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 4AM (local time) - 2.5ft (0.8m), 5s period with WSW swell.
Best Forecast Surf Conditions for Compton Bay this week:
The surf forecast for Compton Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 4AM. The primary swell is predicted to be 0.8m and 5s period with a secondary swell of 0.2m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Compton Bay in the next 16 days are 1.8m 6s and forecast to arrive on Thursday (Aug 20) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 22) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 21st Aug) | 2.5ft (0.8m) 5s |
| Best Surf | 4AM (Fri 21st Aug) | 2.5ft (0.8m) 5s |
| Most Powerful | 7PM (Thu 20th Aug) | 6ft (1.8m) 6s |
Table - best surf conditions forecast for Compton Bay over the next 16 days.
The Lowdown
Alright, let me have a look at what’s cookin’.
Honestly, mate, I gotta be straight with ya – the next couple of weeks are a real mixed bag and mostly a flat spell for the region we’re lookin’ at here, Compton Bay (Isle of Wight). The swell energy never really gets goin’ proper, and the wind just won’t play nice for most of it. We’ve got a big ol’ gap of flatness right in the middle, with hardly a ripple from Thursday the 22nd through Monday the 26th of August. That’s near enough five days of nothin’ to write home about.
The first few days, Tuesday the 18th through Thursday the 20th, we see some waist-to-chest high swell pushin’ in, around 4ft to 5ft from the WSW, but the period is short and snappy – only 5 or 6 seconds – makin’ it weak and disorganized. The wind’s howlin’ cross-on or straight onshore, so it’s just a choppy, lumpy mess with combined energy sittin’ between 77 and 160 – that’s weak to barely moderate energy. Not worth paddlin’ out for.
Then Friday the 21st the wind finally goes offshore from the NE, but the swell drops right off a cliff to just 0.7ft. It’s clean and glassy, but there’s simply no push to ride. That flat spell keeps goin’ through the weekend and into early the next week, with waves barely breakin’ the 0.3ft mark.
We get a little bump around Wednesday the 26th with a short-lived pulse of 2ft from the W and combined energy hittin’ 103 (moderate), but the wind’s back up to gale force from the WSW and it’s onshore – makes for lumpy, ugly surf.
Through the end of the month and into September, the swell picks up a bit of size. Saturday the 29th of August shows a 5ft SW swell with a period of 7 seconds and combined energy gettin’ up to 253 (moderate-strong). The wind’s still cross to cross-on, and it looks fairly chopped up. Sunday the 31st of August afternoon has a 8ft SW swell with big energy at 451, but it’s onshore and looks messy. Tuesday the 1st of September also has 5ft from the SW with a longer period of 9 seconds and strong energy (408), but again, it’s blowin’ onshore from the SW. All of these are for experts only given the size and onshore wind, and with the crowd factor listed as "sometimes," you’ll likely be fighting for scraps.
There’s one tiny window that stands out more than the rest: Tuesday the 1st of September morning. That 5ft SW groundswell with a 9-second period and combined energy at 408 is the biggest, most powerful patient wave we see. The direction’s right for the break’s optimum, and if you can handle the onshore breeze, it’ll have some grunt. But honestly, for clean conditions, we don’t really get a standout window. The offshore winds we saw on the 21st and 22nd were paired with zero swell.
So, if you’re desperate, the end of August into early September has the most size, but it’s a wind-swept, onshore affair. Beginners should steer clear of anything over 5ft, and there’s a few days surpassin’ that. The water temperature is average for the time of year, so you’ll be alright in a 3/2 wetsuit. For me, the pick of a poor bunch is Tuesday the 1st of September morning if you’re an expert lookin’ for a challenge in lumpy, powerful waves. Otherwise, save your energy.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 23°C on Tue afternoon, min 15°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Fri morning. Warm (max 21°C on Sat afternoon, min 12°C on Fri night). 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) | WSW 5 | WSW 5 | WSW 6 | WSW 5 | WSW 4 | WSW 6 | WSW 5 | WSW 6 | W 6 | WSW 6 | WSW 9 | WSW 8 | WSW 9 | W 10 | W 10 | W 9 | W 9 | W 4 | W 9 | W 8 | W 8 |
Wave Graph | |||||||||||||||||||||
77 | 106 | 77 | 42 | 42 | 104 | 88 | 160 | 82 | 12 | 8 | 7 | 7 | 2 | 2 | 2 | 2 | 7 | 2 | 1 | 1 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross | off | off | off | off | off | cross-off | cross-off | on | cross-off | glassy | on | on |
High Tide | 3:26PM2.32m | 3:37AM2.15m | 4:02PM2.15m | 4:18AM1.98m | 4:42PM2.00m | 5:06AM1.84m | 5:32PM1.89m | 6:10AM1.75m | 6:40PM1.84m | 7:52AM1.76m | 8:18PM1.89m | 9:27AM1.88m | 9:31PM2.03m | ||||||||
Low Tide | 8:15AM0.28m | 8:38PM0.52m | 8:57AM0.54m | 9:25PM0.73m | 9:46AM0.79m | 10:28PM0.91m | 10:59AM0.98m | 00:09AM0.99m | 12:44PM1.04m | 1:35AM0.91m | 1:56PM0.95m | 2:30AM0.76m | 2:45PM0.82m | 3:12AM0.58m | |||||||
5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:13 | — | — | 8:10 | — | — | 8:08 | — | |
mm | — | — | — | — | — | 2 | — | — | — | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 23 | 18 | 18 | 20 | 18 | 18 | 20 | 17 | 18 | 19 | 17 | 19 | 21 | 19 | 18 | 18 | 18 | 18 | 18 | 17 |
Feels °C | 19 | 19 | 15 | 14 | 16 | 15 | 13 | 16 | 14 | 16 | 16 | 12 | 14 | 18 | 15 | 15 | 13 | 13 | 15 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 9 | ENE 4 | W 10 | E 4 | — | W 9 | — | W 8 | W 8 |
— | — | — | — | — | — | — | — | 68 | 12 | 7 | 3 | 7 | 3 | 2 | 1 | — | 2 | — | 1 | 1 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | WSW 10 | WSW 9 | WSW 9 | WSW 8 | — | W 10 | W 5 | W 9 | W 9 | — | — | — | — |
— | — | — | — | — | — | — | — | 10 | 8 | 8 | 7 | — | 2 | 1 | 2 | 2 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 5 | — | — | — | — | W 9 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 2 | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 5 | WSW 5 | WSW 6 | WSW 5 | WSW 4 | WSW 6 | WSW 5 | WSW 6 | W 6 | NNE 3 | NE 4 | NE 4 | NE 5 | — | ENE 4 | — | — | W 4 | — | — | WSW 3 |
77 | 106 | 77 | 42 | 42 | 104 | 88 | 160 | 82 | 7 | 6 | 12 | 22 | — | 7 | — | — | 7 | — | — | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 318 | 268 | 27 | 347 | 268 | 318 | 202 | 249 | 2 | 188 | 116 | 217 | 200 | 284 | 284 | 314 | 305 | 314 | 322 | 430 | 268 |
Best forecast wave conditions in Isle of Wight | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Compton Bay Surf forecast
The above surf forecast table for Compton Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Compton Bay can be found by selecting the local surf guide option on the grey menu. Our Compton Bay 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 (Compton Bay) 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 Compton Bay 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.
Compton Bay is 14 km (9 miles) from Newport. If you plan a holiday in Isle of Wight, look for hotels and other accommodation in Newport. Newport has rooms for a wide range of budgets as well as car hire and transport links.











