Surf Forecasts:
Slade Bay/Boot Reef surf forecast from 11 Sep 2026:
- Best quality surf: Sunday 13 Sep, 10AM (local time) - 4.5ft (1.3m), 7s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 4PM (local time) - 7ft (2.1m), 7s period, W swell with 491 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 10AM (local time) - 4.5ft (1.3m), 7s period with WSW swell.
Best Forecast Surf Conditions for Slade Bay/Boot Reef this week:
The surf forecast for Slade Bay/Boot Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 10AM. The primary swell is predicted to be 1.3m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Slade Bay/Boot Reef in the next 16 days are 2.1m 7s and forecast to arrive on Thursday (Sep 17) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Tuesday (Sep 15) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 13th Sep) | 4.5ft (1.3m) 7s |
| Best Surf | 10AM (Sun 13th Sep) | 4.5ft (1.3m) 7s |
| Most Powerful | 4PM (Thu 17th Sep) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for Slade Bay/Boot Reef over the next 16 days.
The Lowdown
Alright, let’s talk Slade Bay/Boot Reef in terms you can really feel. Over the next 16 days, it’s a long, quiet stretch. From Friday the 11th all the way through Friday the 18th, conditions are mostly poor. Then another gap of about 8 days with very little to recommend. Just a tough run.
The only time worth squinting at is Friday morning, the 11th. The water is sitting at 66°F, which is 5°F warmer than normal for this time of year—that’s very unusual and a real treat if you get in. We’ve got a 5ft swell from the WSW, with a period of 9 seconds. That’s moderate wave energy, at 314. Wind is light at 9 mph from the NW, blowing cross-offshore, so it’ll look clean. It’s a reef break, so with that longer-period groundswell, the shape could be okay, but honestly, it’s still described as marginal. Best of a bad bunch.
That afternoon, the swell drops to 4ft from the same direction, with lighter cross-off WNW winds at 6 mph. Clean but smaller and very ordinary.
Saturday the 12th is a total loss. Swell builds to 6ft in the afternoon, but it’s hit hard by 22 mph SW cross-onshore winds. That’s fresh and lumpy. Short period, too—just 5-7 seconds. Messy and choppy. Leave it.
From Sunday the 13th through Friday the 18th, the swell hangs between 2ft and 4ft, but the wind is cross or cross-onshore, and the conditions are poor. Another gap of about 8 days with no real recommendation.
Saturday the 19th morning has a faint pulse: 3ft from the WSW with just 3 mph ESE wind—light cross-onshore with small ripples. Energy is weak at 95. Still marginal. Not exciting.
After that, it’s all small, weak swells and messy winds well into late September. Sizes drop under 3ft, and the energy is weak. Nothing stands out. For this area, a blank run like this is more normal. Forecasts can change, but right now, I’d hang it up.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat night. Very mild (max 18°C on Sun night, min 15°C on Fri morning). Winds decreasing (fresh winds from the SW on Sat afternoon, light winds from the SW by Sun night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed night. Very mild (max 19°C on Mon morning, min 13°C on Tue night). Winds increasing (light winds from the SW on Mon night, fresh winds from the W by Wed night). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 9 | WSW 9 | WSW 8 | WSW 5 | WSW 6 | WSW 7 | WSW 7 | WSW 10 | WSW 9 | WSW 9 | WSW 6 | WSW 8 | WSW 8 | WSW 8 | W 6 | W 8 | W 10 | W 5 | W 7 | W 7 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 314 | 202 | 119 | 102 | 292 | 337 | 163 | 197 | 149 | 194 | 62 | 137 | 96 | 21 | 78 | 173 | 225 | 75 | 335 | 491 | 285 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off |
High Tide | 7:20PM8.77m | 7:40AM8.58m | 7:57PM8.86m | 8:16AM8.60m | 8:33PM8.72m | 8:50AM8.41m | 9:07PM8.36m | 9:23AM8.05m | 9:41PM7.85m | 9:57AM7.56m | 10:15PM7.24m | 10:31AM6.98m | 10:52PM6.59m | ||||||||
Low Tide | 1:10PM0.27m | 1:33AM0.05m | 1:46PM0.09m | 2:07AM0.02m | 2:20PM0.12m | 2:39AM0.20m | 2:53PM0.34m | 3:10AM0.55m | 3:25PM0.72m | 3:41AM1.03m | 3:58PM1.23m | 4:14AM1.59m | 4:33PM1.81m | ||||||||
 |  |  |  | |  | | |  | | | |  | |  | | | | | | | |
 | 6:43 | — | — | 6:45 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 7:40 | — | — | 7:38 | — | — | 7:37 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — |
mm | — | — | — | — | — | 2 | — | — | 1 | — | — | — | 1 | — | — | — | — | 3 | — | — | — |
Temp °C | 15 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 18 | 19 | 18 | 18 | 16 | 17 | 15 | 14 | 15 | 16 | 15 | 15 | 15 |
Feels °C | 13 | 14 | 11 | 12 | 12 | 13 | 16 | 16 | 18 | 18 | 16 | 16 | 12 | 12 | 12 | 10 | 11 | 10 | 10 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | WSW 9 | WSW 8 | W 8 | — | — | WSW 7 | WSW 10 | WSW 9 | WSW 9 | W 9 | WSW 8 | WSW 8 | WSW 8 | W 6 | W 8 | — | W 10 | W 10 | — | W 7 |
| kJ | 314 | 202 | 119 | 64 | — | — | 163 | 197 | 149 | 132 | 38 | 137 | 96 | 21 | 78 | 173 | — | 53 | 8 | — | 285 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 13 | — | — | S 12 | S 12 | W 11 | WSW 10 | WSW 10 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 7 | — | — | 3 | 3 | 2 | 21 | 33 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WSW 5 | WSW 6 | WSW 7 | — | — | — | WSW 9 | WSW 6 | — | — | W 6 | NNW 4 | NNW 4 | W 10 | W 5 | W 7 | W 7 | — |
| kJ | — | — | — | 102 | 292 | 337 | — | — | — | 194 | 62 | — | — | 62 | 16 | 19 | 225 | 75 | 335 | 491 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 0 | 104 | 125 | 319 | 140 | 7 | 364 | 125 | 125 | 125 | 118 | 905 | 1349 | 12 | 8 | 151 | 319 | 362 | 357 | 356 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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‘Porth Neigwl: Choppy waves hadn't tidied much (from what I could see in the dark.’
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Information about the Slade Bay/Boot Reef Surf forecast
The above surf forecast table for Slade Bay/Boot Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Slade Bay/Boot Reef can be found by selecting the local surf guide option on the grey menu. Our Slade Bay/Boot Reef 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 (Slade Bay/Boot Reef) 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 Slade Bay/Boot Reef 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.
Slade Bay/Boot Reef is 19 km (12 miles) from Swansea. If you plan a holiday in Wales - Gower, look for hotels and other accommodation in Swansea. Swansea has rooms for a wide range of budgets as well as car hire and transport links.
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