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Jeffs Left surfForecast / Wales – Mid / UK
12 Day Weather and Surf, issued 6 am Friday 19 Sep 2025 BST
Best Forecast Surf Conditions for Jeffs Left this week:
The most powerful waves expected at Jeffs Left in the next 12 days are 1.0m 9s and forecast to arrive on Friday (Sep 19) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Sunday (Sep 21) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Fri 19th Sep) | 3.5ft (1.0m) 9s |
Table - best surf conditions forecast for Jeffs Left over the next 12 days.
Short Range Forecast Heavy rain (total 20mm), heaviest during Fri night. Very mild (max 18°C on Fri afternoon, min 8°C on Sun night). Winds increasing (calm on Fri night, fresh winds from the N by Sun afternoon). | Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Wed afternoon, min 8°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | — | ||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 4 | 5 | 8 | 4 | 13 | 5 | 4 | 3 | - | 3 | 12 | 12 | 11 | 10 | 10 | 9 | 9 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 147 | 170 | 73 | 31 | 20 | 25 | 7 | 13 | 4 | 0 | 2 | 0 | 0 | 2 | 3 | 3 | 2 | 2 | 2 | 7 | 8 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- on | cross | cross- on | cross- on | cross- off | cross | cross- off | cross- off | cross- on | off | glass | cross | off | off | cross- off | off | off | off | off |
High Tide / height (m) | 7:32PM 3.97 | 7:56AM 3.76 | 8:11PM 4.23 | 8:33AM 3.99 | 8:48PM 4.41 | 9:07AM 4.14 | 9:22PM 4.48 | 9:40AM 4.21 | 9:56PM 4.44 | 10:12AM 4.20 | 10:28PM 4.31 | 10:43AM 4.10 | 10:59PM 4.09 | ||||||||
Low Tide / height (m) | 2:25PM 0.67 | 2:53AM 0.31 | 3:03PM 0.48 | 3:29AM 0.19 | 3:36PM 0.36 | 4:00AM 0.16 | 4:05PM 0.33 | 4:27AM 0.22 | 4:31PM 0.35 | 4:51AM 0.34 | 4:55PM 0.44 | 5:13AM 0.52 | 5:19PM 0.58 | ||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | |||||||||||||||
| Sunrise | 6:56 | - | - | 6:56 | - | - | 6:58 | - | - | 7:01 | - | - | 7:03 | - | - | 7:03 | - | - | 7:05 | - | - |
| Sunset | - | 7:22 | - | - | 7:21 | - | - | 7:17 | - | - | 7:15 | - | - | 7:14 | - | - | 7:10 | - | - | 7:08 | - |
 |  |  | |  |  |  |  |  | | | | | | | | | | | | | |
Rain (mm) | - | 1 | 9 | 5 | 3 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 18 | 16 | 13 | 13 | 12 | 13 | 13 | 10 | 12 | 13 | 9 | 12 | 13 | 12 | 13 | 15 | 13 | 14 | 17 | 12 |
| Feels °C (?) | 14 | 14 | 15 | 10 | 9 | 8 | 6 | 6 | 6 | 8 | 8 | 5 | 9 | 11 | 9 | 10 | 12 | 9 | 10 | 15 | 7 |
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Recent Eyeball Surf Reports for Wales - Mid
Continuing clean conditions at Jeffs Left (calm at Machynlleth 23 km from Jeffs Left). A 1.6m swell from the WSW
23 km away, 1 h 16 min ago
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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 12 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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