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Sumpters Surf Forecast
/ Wales – Gower (29 surf breaks) /
Surf Forecasts:
Sumpters surfForecast / Wales – Gower / UK
12 Day Weather and Surf, issued 5 pm Friday 19 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Sumpters surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sumpters sea temperature is
10.3° C
(Which is slightly cooler than normal)Best Forecast Surf Conditions for Sumpters this week:
The surf forecast for Sumpters over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 21) at 6PM. The primary swell is predicted to be 1.8m and 15s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sumpters in the next 12 days are 2.5m 16s and forecast to arrive on Sunday (Dec 21) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Wednesday (Dec 24) at 9PM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sun 21st Dec) | 6ft (1.8m) 15s |
| Best Surf | 6PM (Sun 21st Dec) | 6ft (1.8m) 15s |
| Most Powerful | 6AM (Sun 21st Dec) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Sumpters over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Moderate rain (total 12mm), heaviest on Sat night. Very mild (max 10°C on Fri afternoon, min 8°C on Sun morning). Winds decreasing (strong winds from the SE on Sat afternoon, light winds from the NNE by Sun night). | Days 3-6 Weather Summary Mostly dry. Very mild (max 10°C on Mon afternoon, min 1°C on Wed night). Winds increasing (light winds from the NNW on Mon afternoon, fresh winds from the E by Wed night). | ||||||||||||||||||||||
Fri 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 16 | 14 | 8 | 11 | 11 | 15 | 15 | 14 | 13 | 12 | 11 | 11 | 13 | 12 | 12 | 9 | 12 | 11 | 10 | 12 | 12 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 3644 | 1900 | 409 | 1031 | 1151 | 2775 | 1737 | 930 | 560 | 380 | 285 | 164 | 384 | 398 | 246 | 118 | 117 | 62 | 19 | 28 | 71 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross | cross | cross- on | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | off | off | off | ||
High Tide / height (m) | 5:54PM 7.21 | 6:12AM 7.45 | 6:31PM 7.37 | 6:48AM 7.61 | 7:07PM 7.45 | 7:25AM 7.69 | 7:43PM 7.45 | 8:01AM 7.70 | 8:20PM 7.38 | 8:39AM 7.63 | 8:58PM 7.26 | 9:18AM 7.50 | 9:40PM 7.09 | 10:01AM 7.32 | |||||||||
Low Tide / height (m) | 11:59PM 1.38 | 12:21PM 1.27 | 12:35AM 1.24 | 12:57PM 1.17 | 1:10AM 1.17 | 1:32PM 1.15 | 1:45AM 1.17 | 2:08PM 1.19 | 2:20AM 1.24 | 2:45PM 1.28 | 2:57AM 1.36 | 3:25PM 1.41 | 3:38AM 1.54 | ||||||||||
Fri 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | |||||||||||||||||
| Sunrise | - | - | 8:18 | - | - | 8:18 | - | - | 8:19 | - | - | 8:19 | - | - | 8:21 | - | - | 8:21 | - | - | 8:21 | ||
| Sunset | 4:07 | - | - | 4:07 | - | - | 4:08 | - | - | 4:08 | - | - | 4:09 | - | - | 4:10 | - | - | 4:10 | - | - | ||
 |  |  |  |  | |  | |  | |  | | |  | | | | | | | | |||
Rain (mm) | 1 | - | - | - | 5 | - | 1 | 5 | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Temp. °C | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 9 | 9 | 10 | 10 | 7 | 5 | 2 | 3 | 4 | 3 | 3 | ||
| Feels °C (?) | 4 | 3 | 2 | 2 | 5 | 3 | 4 | 6 | 6 | 8 | 7 | 6 | 7 | 7 | 1 | -2 | -7 | -5 | -4 | -6 | -6 | ||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sumpters 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.
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Information about the Sumpters Surf forecast
The above surf forecast table for Sumpters provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Sumpters can be found by selecting the local surf guide option on the grey menu. Our Sumpters 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 (Sumpters) 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 Sumpters 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.
Sumpters 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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