Surf Forecasts:
Joss Bay surf forecast from 11 Sep 2026:
- Most powerful swell: Wednesday 16 Sep, 1AM (local time) - 3ft (0.9m), 4s period, NNW swell with 22 kJ wave energy.
Best Forecast Surf Conditions for Joss Bay this week:
The most powerful waves expected at Joss Bay in the next 16 days are 0.9m 4s and forecast to arrive on Wednesday (Sep 16) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Sep 12) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Wed 16th Sep) | 3ft (0.9m) 4s |
Table - best surf conditions forecast for Joss Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a proper look at what’s coming our way for Joss Bay over the next couple of weeks.
Straight up, I’ve gotta be honest with you – it’s a tough outlook. There’s a long, dry spell ahead. We’re looking at a gap of about ten days from now, right through the 11th of September up until the 21st of September, where there’s barely a ripple worth paddling for. The swell is tiny, mostly around 0.3ft to 1ft, and the energy is weak – we’re talking combined swell energy values of just 1 to 8 for most of that period. It’s just not happening.
Now, there is a bit of a change on the 21st of September. Monday morning shows the swell starting to build a little, with a wave height of 3ft from the NNW and combined energy climbing to 31 (moderate wave energy). By Monday afternoon, it gets a bit bigger at 4ft from the NNE, with energy up to 85. The problem is, the wind is onshore and moderate, so it’s going to be messy. This isn’t the clean, groomed stuff we want.
Into the 25th of September, Friday morning, we finally see some real size – 6ft from the NE, with a combined energy of 271 (strong wave energy). That’s the biggest swell of the period. But again, the wind is onshore, ENE around 9 mph. For a beach break like Joss Bay, a NE swell hitting the beach with onshore wind is going to be pretty lumpy and hard to manage. If you’re an experienced surfer and just want to get wet, you could have a crack, but for anyone else, it’s going to be a struggle. The period is only 7 seconds, so it’s a short-period windswell – not much grunt or shape to it.
After that, the 26th of September Saturday sees the swell dropping back, with 4ft from the ENE and a strong cross-offshore wind from the west at 25 mph, but the energy is back down to 88 (moderate). It’ll be clean because of that offshore wind, but the swell is fading fast.
Water temperature is sitting around 67°, which is 4° warmer than normal for this time of year – that’s notably warm for a September session, so you won’t need the thickest wetsuit.
There’s no clear standout here. If I had to pick one, it’d be the morning of the 25th of September for the biggest swell, but it’s really only for the dedicated crew who don’t mind onshore wind and short-period stuff. For the rest of the time, honestly, leave the board at home.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Sun morning. Warm (max 22°C on Sat afternoon, min 17°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Mon night. Warm (max 23°C on Mon afternoon, min 13°C on Tue night). Winds increasing (light winds from the SSW on Mon afternoon, strong winds from the WSW by Thu morning). | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
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) | N 6 | N 6 | N 7 | N 6 | SW 4 | WSW 4 | SW 5 | NE 3 | WSW 3 | NE 4 | N 6 | N 6 | N 5 | NNW 4 | N 4 | N 10 | NNE 7 | NE 5 | N 7 | N 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 2 | 0 | 1 | 1 | 1 | 1 | 22 | 6 | 2 | 4 | 1 | 1 | 1 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | cross-off | glassy | off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | off | off | off | off |
High Tide | 00:45AM4.21m | 12:54PM4.45m | 1:24AM4.26m | 1:33PM4.49m | 2:01AM4.23m | 2:12PM4.41m | 2:36AM4.11m | 2:50PM4.24m | 3:11AM3.92m | 3:28PM4.00m | 3:47AM3.69m | 4:07PM3.70m | ||||||||
Low Tide | 7:14PM-0.07m | 7:30AM0.40m | 7:51PM-0.12m | 8:05AM0.35m | 8:26PM-0.05m | 8:38AM0.37m | 8:59PM0.14m | 9:09AM0.46m | 9:31PM0.39m | 9:40AM0.61m | 10:02PM0.68m | 10:11AM0.81m | 10:35PM0.98m | |||||||
 |  | | |  |  | |  |  | | |  | | | | | |  |  | | |
 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:31 | — | — |
 | 7:19 | — | — | 7:15 | — | — | 7:14 | — | — | 7:12 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — |
mm | — | — | — | — | 5 | 9 | — | — | — | — | 1 | 2 | 2 | — | — | — | — | 2 | — | — |
Temp °C | 20 | 20 | 20 | 22 | 19 | 19 | 21 | 20 | 20 | 23 | 21 | 20 | 21 | 18 | 16 | 18 | 16 | 18 | 19 | 14 |
Feels °C | 18 | 19 | 15 | 18 | 15 | 18 | 19 | 20 | 20 | 21 | 20 | 18 | 19 | 14 | 11 | 13 | 10 | 12 | 12 | 7 |
Swell 1 Height (m) Direction Period (s) | S 4 | — | N 7 | N 6 | — | — | SW 5 | S 4 | — | — | NE 5 | N 6 | S 4 | — | N 4 | N 6 | NNE 7 | NE 5 | N 7 | S 5 |
| kJ | 1 | — | 1 | 1 | — | — | 12 | 1 | — | — | 1 | 1 | 2 | — | 6 | 1 | 4 | 1 | 1 | 2 |
Swell 2 Height (m) Direction Period (s) | N 6 | N 6 | — | — | — | — | — | — | — | NE 4 | N 6 | — | — | N 11 | N 10 | N 10 | — | — | — | N 8 |
| kJ | 1 | 1 | — | — | — | — | — | — | — | 1 | 1 | — | — | 2 | 2 | 2 | — | — | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | N 5 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 3 | — | SW 3 | SW 3 | SW 4 | WSW 4 | SW 3 | NE 3 | WSW 3 | SSW 3 | SW 4 | SSW 4 | — | NNW 4 | NW 4 | WNW 3 | W 3 | WSW 4 | SW 4 | NW 4 |
| kJ | 1 | — | 2 | 7 | 23 | 11 | 5 | 2 | 3 | 1 | 8 | 8 | — | 22 | 13 | 7 | 5 | 18 | 29 | 15 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 200 | 166 | 221 | 461 | 470 | 511 | 377 | 287 | 123 | 360 | 281 | 354 | 365 | 365 | 378 | 470 | 593 | 554 | 536 | |
Best forecast wave conditions in South Coast of England | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Joss Bay Surf forecast
The above surf forecast table for Joss Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Joss Bay can be found by selecting the local surf guide option on the grey menu. Our Joss 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 (Joss 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 Joss 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.
Are you planning a holiday in South Coast of England? If you are looking for accommodation near Joss Bay, camping, hotels and holiday cottages in South Coast of England, consider staying in Broadstairs which is 3 km (2 miles) away. Other places in and around South Coast of England where you can find information about places to rent, and car hire include Manston which is 7 km (4 miles) away, Margate, Ramsgate and Thanet.
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