Surf Forecasts:
Joss Bay surf forecast from 14 Aug 2026:
- Most powerful swell: Friday 21 Aug, 7AM (local time) - 1.5ft (0.5m), 8s period, N swell with 32 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 0.5m 8s and forecast to arrive on Friday (Aug 21) at 7AM. 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 Tuesday (Aug 18) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Fri 21st Aug) | 1.5ft (0.5m) 8s |
Table - best surf conditions forecast for Joss Bay over the next 16 days.
The Lowdown
Alright, let’s get real about the next couple of weeks. It’s a tough stretch. If you’re looking to get wet, you’re not going to have many options, and the ones we do have are pretty marginal.
Straight up, the 16-day window is looking flat and mostly messy. The first recommendation isn't until Friday the 21st, and even then, it's a proper struggle session. Honestly, for a good stretch before that, we’re looking at a barren run. There are days of nothing serviceable, and what shows up is small and junky. This kind of blank run isn't unheard of for Joss Bay (Thames Estuary), so don't get too down about it.
The water is a massive talking point right now. It’s running at 70°, which is a huge 7° warmer than normal for this time of year. That’s proper unusual, a real anomaly that you don't see often. At least if you do manage to get out, you won't need a thick suit.
So, let’s run through the only real window we have.
Friday, August 21st – This is the standout, and even that’s saying something. The morning is clean, with a light southerly cross-offshore breeze. We’ve got a weak 1ft of north-northeast swell, but it’s pretty much the best you’ll see. It’s not going to be epic, but it’s surfable. The afternoon builds slightly to 2ft from the north-northeast, with a clean cross-offshore flow, and the energy picks up a little (88). But this is still very small and weak. It’s not a day to be picky, just a day to be out there. With a period of 8 seconds, it’s not got much push, so you’ll be working for it.
After that, we go backwards again. Saturday the 22nd and Sunday the 23rd see the surf drop back down to that 1-2ft range with poor, cross-onshore winds and chop. It’s not worth the paddle. Early next week, Monday the 24th, is onshore and lumpy with a fresh breeze, and Tuesday the 25th gets blown out by a strong cross-onshore wind in the afternoon. It’s all pretty hopeless.
The week after looks more of the same. A small bump around Wednesday the 26th with a clean morning, but we’re talking 0.7ft. It’s ankle-biters. Then we fade out into the end of the month with next to nothing. There’s a period building around the 28th and 29th, but it’s all onshore, strong winds, and rain, so no good for a wave. It’s a bleak outlook, lads. Sometimes it be like that.
Keep an eye on the charts, but don’t hold your breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Fri afternoon, min 18°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Tue morning. Warm (max 26°C on Tue afternoon, min 15°C on Wed morning). Winds increasing (calm on Mon morning, fresh winds from the WSW by Wed morning). | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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) | NE 4 | NE 4 | E 3 | NNE 3 | NNE 4 | NE 4 | NE 4 | ENE 4 | NNE 4 | NNE 5 | N 7 | N 7 | NE 7 | NE 7 | NE 7 | N 8 | N 8 | N 8 | NNE 7 | NNE 8 | NE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 1 | 7 | 13 | 12 | 4 | 1 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 5 | 22 | 17 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | off | off | glassy | glassy | off | off | cross-off | cross-off | cross | cross-on |
High Tide | 1:16PM4.44m | 1:51AM4.23m | 1:59PM4.50m | 2:33AM4.18m | 2:41PM4.44m | 3:12AM4.06m | 3:22PM4.27m | 3:51AM3.87m | 4:03PM4.03m | 4:31AM3.64m | 4:46PM3.74m | 5:13AM3.39m | 5:34PM3.43m | ||||||||
Low Tide | 8:18PM-0.17m | 8:33AM0.40m | 8:57PM-0.16m | 9:09AM0.45m | 9:34PM-0.01m | 9:44AM0.55m | 10:09PM0.24m | 10:18AM0.70m | 10:44PM0.55m | 10:52AM0.89m | 11:19PM0.87m | 11:28AM1.10m | 11:58PM1.17m | ||||||||
 | |  |  | |  |  | | | | | |  | |  | | | | | | | |
 | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — |
 | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:13 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 1 | — | — | — | — | — |
Temp °C | 26 | 30 | 27 | 20 | 20 | 19 | 18 | 19 | 19 | 21 | 23 | 22 | 25 | 26 | 22 | 19 | 21 | 19 | 18 | 18 | 18 |
Feels °C | 25 | 27 | 27 | 18 | 18 | 18 | 18 | 19 | 18 | 21 | 21 | 21 | 24 | 25 | 17 | 15 | 18 | 14 | 17 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | NE 4 | NE 4 | — | — | — | — | NE 4 | ENE 4 | NNE 4 | NNE 5 | NE 5 | — | NE 7 | SSW 6 | S 5 | N 8 | S 5 | S 4 | NNE 7 | NNE 8 | NE 8 |
| kJ | 1 | 1 | — | — | — | — | 4 | 1 | 2 | 2 | 1 | — | 2 | 12 | 4 | 1 | 1 | 1 | 5 | 22 | 17 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | N 6 | N 6 | N 7 | N 7 | — | NE 7 | NE 7 | N 6 | N 8 | S 6 | NE 4 | — | — |
| kJ | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | — | 2 | 2 | 1 | 1 | 1 | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | N 6 | — | — | — | — | — | — | — | — | — | N 8 | — | — | — |
| kJ | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | E 3 | NNE 3 | NNE 4 | NE 4 | — | — | — | — | — | SW 3 | WSW 4 | WNW 3 | NW 3 | W 4 | W 4 | NNW 3 | N 3 | — | — |
| kJ | — | — | 1 | 7 | 13 | 12 | — | — | — | — | — | 12 | 25 | 2 | 7 | 26 | 14 | 3 | 2 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 378 | 461 | 303 | 535 | 562 | 359 | 462 | 728 | 604 | 593 | 730 | 470 | 441 | 7 | 553 | 333 | 397 | 155 | 143 | 354 | 158 |
Best forecast wave conditions in South Coast of England | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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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