Surf Forecasts:
Jeffs Left surf forecast from 12 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 4PM (local time) - 5ft (1.6m), 7s period, WSW swell with 229 kJ wave energy.
Best Forecast Surf Conditions for Jeffs Left this week:
The most powerful waves expected at Jeffs Left in the next 16 days are 1.6m 7s and forecast to arrive on Saturday (Sep 12) 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 0.5m 4s period and expected on Wednesday (Sep 16) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sat 12th Sep) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Jeffs Left over the next 16 days.
Short Range ForecastModerate rain (total 18mm), heaviest on Sat afternoon. Very mild (max 19°C on Mon afternoon, min 12°C on Fri night). Winds decreasing (fresh winds from the SW on Sat morning, light winds from the WNW by Sun morning). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Mon night. Very mild (max 18°C on Mon night, min 13°C on Tue night). Winds increasing (light winds from the WNW on Tue afternoon, fresh winds from the WNW by Wed night). | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 6 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | SW 7 | WSW 5 | WSW 5 | WSW 6 | WSW 6 | WSW 6 | NW 4 | NW 5 | NW 5 | W 4 | W 5 | WNW 5 | WNW 4 | WSW 4 | WSW 4 | WSW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 128 | 229 | 102 | 26 | 15 | 11 | 29 | 33 | 50 | 42 | 14 | 29 | 80 | 31 | 19 | 49 | 40 | 32 | 6 | 7 | 29 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | on | cross | cross-on | cross-on | cross | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on |
High Tide | 9:28AM4.38m | 9:45PM4.77m | 10:05AM4.40m | 10:22PM4.65m | 10:41AM4.30m | 10:59PM4.40m | 11:16AM4.10m | 11:35PM4.06m | 11:51AM3.83m | 00:12AM3.66m | 12:27PM3.50m | 00:50AM3.25m | 1:08PM3.15m | 1:37AM2.87m | |||||||
Low Tide | 4:22AM-0.11m | 4:30PM0.12m | 4:56AM0.01m | 5:02PM0.20m | 5:26AM0.23m | 5:32PM0.38m | 5:53AM0.51m | 5:59PM0.61m | 6:17AM0.83m | 6:27PM0.88m | 6:41AM1.13m | 7:01PM1.17m | 7:15AM1.42m | 7:54PM1.46m | |||||||
 |  |  |  | |  |  |  |  | |  | | | | | | | | | | | |
 | 6:43 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — |
 | — | 7:39 | — | — | 7:37 | — | — | 7:35 | — | — | 7:32 | — | — | 7:30 | — | — | 7:28 | — | — | 7:24 | — |
mm | 5 | 8 | 2 | — | — | — | — | 3 | 4 | — | — | — | — | — | 4 | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 19 | 18 | 15 | 16 | 15 | 14 | 14 | 16 | 14 | 15 | 15 | 14 | 14 | 14 |
Feels °C | 12 | 13 | 15 | 17 | 17 | 18 | 17 | 17 | 15 | 12 | 13 | 11 | 9 | 10 | 10 | 8 | 11 | 9 | 10 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | — | — | — | WSW 7 | WSW 7 | SW 7 | — | — | WSW 6 | WSW 6 | WSW 6 | WSW 5 | WSW 7 | WSW 5 | — | — | — | — | NW 4 | NW 4 | — |
| kJ | — | — | — | 26 | 15 | 11 | — | — | 50 | 42 | 14 | 6 | 10 | 6 | — | — | — | — | 7 | 4 | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 9 | W 9 | — | — | — | — | — | — | — | — | — | — | — | — | SW 6 | — | — |
| kJ | — | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 7 | WSW 7 | — | — | — | WSW 5 | WSW 5 | SSW 3 | — | NW 4 | NW 4 | NW 5 | NW 5 | W 4 | W 5 | WNW 5 | WNW 4 | WSW 4 | WSW 4 | WSW 5 |
| kJ | 128 | 229 | 102 | — | — | — | 29 | 33 | 3 | — | 4 | 29 | 80 | 31 | 19 | 49 | 40 | 32 | 6 | 7 | 29 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 252 | 396 | 35 | 117 | 124 | 112 | 237 | 237 | 228 | 35 | 305 | 117 | 117 | 112 | 301 | 475 | 475 | 255 | 268 | 333 | 219 |
Best forecast wave conditions in Mid Wales | |||||||||||||||||||||
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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Jeffs Left surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Jeffs Left Surf forecast
The above surf forecast table for Jeffs Left provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jeffs Left can be found by selecting the local surf guide option on the grey menu. Our Jeffs 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 (Jeffs 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 Jeffs 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.
Are you planning a holiday in Mid Wales? If you are looking for accommodation near Jeffs Left, camping, hotels and holiday cottages in Mid Wales, consider staying in Aberystwyth which is 21 km (13 miles) away. Other places in and around Mid Wales where you can find information about places to rent, and car hire include Trawscoed which is 31 km (19 miles) away, Porthmadog, Aberporth and Welshpool.
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