Surf Forecasts:
Boiler Left surf forecast from 2 Aug 2026:
- Most powerful swell: Wednesday 5 Aug, 4PM (local time) - 5ft (1.6m), 7s period, WSW swell with 227 kJ wave energy.
Best Forecast Surf Conditions for Boiler Left this week:
The most powerful waves expected at Boiler Left in the next 16 days are 1.6m 7s and forecast to arrive on Wednesday (Aug 05) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Sunday (Aug 09) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Wed 5th Aug) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Boiler Left over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – the next sixteen days are a total write-off for a proper paddle. There's simply nothing to get excited about. We're looking at a long, dry spell with no decent surf on the cards.
The only spot in the frame is Boiler Left, a reef break that's inconsistent and often has company. It's exposed to the southwest, which is the right direction, but the swell just doesn't show up. Through the entire period, the wave energy is pitiful, with the combined energy of all swells directed here barely cracking triple digits on a couple of days, peaking at a measly 234 (moderate) on Wednesday the 5th, but that's paired with a fresh cross-onshore wind making it lumpy and poor. The water temp is about average for this time of year.
For the first week, you're looking at tiny, weak waves. Sunday the 2nd has a glassy morning with 1ft of swell from the WSW, but it's just poor surf. The swell inches up to a maximum of 5ft on the afternoon of Wednesday the 5th, but with a 7-second period and a fresh cross-onshore, it's a messy, choppy affair. Even the glassy, calm morning on Saturday the 8th only brings 0.7ft of swell. The whole first week is a scratch.
The second week is even more barren. The swell stays below 3ft, the wind is mostly onshore or cross-onshore, and the energy is next to nothing. By the time we get to the 17th of August, the combined energy is down to a pathetic 1. This reef is inconsistent for a reason, and this is one of those stretches where it just doesn't fire. If you're desperate for a paddle, you might find a knee-high ripple on a glassy morning, but don't expect a wave you can actually ride. The whole setup looks more interesting for a kite than a surfboard for the next two weeks.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue morning. Warm (max 23°C on Sun afternoon, min 14°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 20°C on Fri afternoon, min 13°C on Wed night). Winds decreasing (fresh winds from the W on Wed morning, calm by Thu night). | ||||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | |||||||||||||||
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 8 | WSW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | SW 8 | SW 7 | SW 6 | WSW 7 | WSW 7 | WSW 6 | W 6 | W 6 | W 5 | W 5 | WSW 5 | W 9 | W 9 | W 3 | W 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 13 | 49 | 84 | 86 | 45 | 129 | 107 | 146 | 158 | 227 | 170 | 97 | 88 | 20 | 12 | 19 | 6 | 6 | 7 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-off | cross | cross-on | cross | on | on | on | cross | cross-on | cross | cross | cross-on | cross-on | cross-off | cross-on | cross-off | glassy | cross-on | cross-off |
High Tide | 9:21AM7.85m | 9:38PM8.11m | 9:57AM7.77m | 10:15PM7.93m | 10:35AM7.56m | 10:55PM7.62m | 11:18AM7.25m | 11:41PM7.22m | 12:09PM6.87m | 00:38AM6.78m | 1:13PM6.52m | 1:52AM6.45m | 2:35PM6.38m | 3:19AM6.43m | |||||||
Low Tide | 3:22PM0.78m | 3:44AM0.79m | 3:56PM0.90m | 4:18AM0.96m | 4:33PM1.13m | 4:58AM1.24m | 5:17PM1.45m | 5:45AM1.61m | 6:11PM1.84m | 6:46AM2.01m | 7:22PM2.17m | 8:06AM2.27m | 8:52PM2.25m | ||||||||
 | |  | | | |  |  |  | | |  | | | | | | |  | | | |
 | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — |
 | — | — | 9:04 | — | — | 9:01 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — |
mm | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 23 | 20 | 21 | 21 | 19 | 19 | 19 | 18 | 16 | 17 | 17 | 15 | 16 | 16 | 18 | 20 | 16 | 17 | 18 | 17 |
Feels °C | 16 | 19 | 17 | 19 | 18 | 17 | 17 | 17 | 17 | 11 | 12 | 13 | 9 | 10 | 13 | 14 | 15 | 12 | 15 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | SW 8 | W 15 | — | SW 13 | SW 13 | SW 13 | W 10 | SW 12 | W 10 | W 5 | W 9 | W 4 | WSW 4 | S 13 | W 4 |
| kJ | 22 | 13 | 49 | 84 | 86 | 45 | 129 | 4 | — | 7 | 7 | 7 | 2 | 6 | 7 | 12 | 6 | 6 | 4 | 3 | 2 |
Swell 2 Height (m) Direction Period (s) | — | WSW 9 | — | — | — | — | — | — | — | — | — | W 13 | SW 13 | — | SW 12 | W 9 | SW 12 | W 9 | W 9 | — | W 9 |
| kJ | — | 7 | — | — | — | — | — | — | — | — | — | 3 | 7 | — | 6 | 7 | 6 | 6 | 6 | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 12 | SW 12 | — | SW 12 | S 11 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 6 | — | 5 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 7 | SW 6 | WSW 7 | WSW 7 | WSW 6 | W 6 | W 6 | W 5 | — | WSW 5 | — | — | W 3 | — |
| kJ | — | — | — | — | — | — | — | 107 | 146 | 158 | 227 | 170 | 97 | 88 | 20 | — | 19 | — | — | 7 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 400 | 180 | 1 | 10 | 5 | 8 | 364 | 256 | 356 | 36 | 356 | 231 | 181 | 196 | 180 | 380 | 429 | 364 | 377 | 383 | 180 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Boiler Left Surf forecast
The above surf forecast table for Boiler Left provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Boiler Left can be found by selecting the local surf guide option on the grey menu. Our Boiler Left 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 (Boiler Left) 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 Boiler Left 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.
Boiler Left is 21 km (13 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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