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Surf Forecasts:

Sumpters surf break

Sumpters surfForecast / Wales – Gower / UK

information circle12 Day Weather and Surf, issued 6 pm Tuesday 16 Sep 2025 BST
Forecast 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
17.7° C
 (Which is 2.0°C warmer than normal for this time of year)

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 Saturday (Sep 20) at 7AM. The primary swell is predicted to be 1.2m and 9s period with a secondary swell of 0.1m and 16s. 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 11s and forecast to arrive on Wednesday (Sep 17) at 10PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Sep 21) at 4AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sat 20th Sep)4ft (1.2m) 9s
Best Surf 7AM (Sat 20th Sep)4ft (1.2m) 9s
Most Powerful10PM (Wed 17th Sep)7.5ft (2.3m) 12s

Table - best surf conditions forecast for Sumpters over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 19mm), heaviest on Tue night. Very mild (max 18°C on Fri morning, min 13°C on Tue night). Winds decreasing (strong winds from the SW on Tue night, light winds from the S by Fri morning).

Days 3-6 Weather Summary Heavy rain (total 23mm), heaviest during Sat morning. Very mild (max 18°C on Fri afternoon, min 9°C on Sun night). Winds increasing (light winds from the SSE on Sat morning, strong winds from the NNW by Sat night).

Tue
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.8
WSW
1.3
SW
3
WSW
3
WSW
2.5
WSW
2.3
WSW
2.3
WSW
2.1
WSW
1.9
WSW
1.7
WSW
1.5
WSW
1.1
WSW
1
WSW
0.8
WSW
1
WSW
0.6
WSW
0.2
WSW
0.2
WSW
0.1
SW
0.1
SW
0.1
W
Period(s) (?)11681012121110101099998888131316
Wave
Graph
(?)Metric surfscale
Energy kJ (?)80011713351724168014851244804683506378199151841254977766
Wind
(km/h)
25
WSW
30
S
40
SW
35
SW
25
SW
35
SSW
30
SW
25
SSW
20
S
15
SW
10
W
10
N
15
SW
35
WNW
30
N
25
NNE
20
NNE
20
NNE
20
N
15
NNE
15
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		onononononcross-
on		cross-
on		oncross-
on		cross-
off		oncrosscross-
off		cross-
off		offoffcross-
off		offoff
High Tide
/ height (m)
3:10AM
5.93
3:50PM
6.27
4:32AM
6.33
4:58PM
6.82
5:27AM
6.88
5:47PM
7.39
6:10AM
7.39
6:27PM
7.86
6:46AM
7.80
7:02PM
8.19
7:19AM
8.08
7:34PM
8.36
7:50AM
8.21
Low Tide
/ height (m)
8:55PM
2.60
9:38AM
2.63
10:25PM
2.25
10:52AM
2.16
11:24PM
1.71
11:42AM
1.61
12:07AM
1.22
12:21PM
1.14
12:42AM
0.82
12:54PM
0.78
1:13AM
0.56
1:24PM
0.55
1:42AM
0.43
Tue
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Sunrise--6:52--6:54--6:56--6:58--7:00--7:01--7:03
Sunset7:30--7:28--7:24--7:22--7:21--7:17--7:15--
cloud
heavy rain
light rain
light rain
rain showers
clear
part cloud
part cloud
part cloud
part cloud
light rain
heavy rain
light rain
light rain
cloud
rain showers
clear
clear
clear
clear
part cloud
Rain (mm)
-12214-----11452-1-----
Temp. °C151616171717171718181615151212131212131212
Feels °C (?)108101312121314171615151456767878
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for Wales - Gower

  1. weather stationWind Update Continuing clean conditions at Sumpters (calm at Rhossili wx 6 km from Sumpters). 1.3m 11s groundswell from the WSW with a 0.8m 5s windswell from the W. 2 swells combining to make bigger set waves.

    2 hours 3 minutes ago Sumpters
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2 h 3 min ago

5 km/h
NNW
Clean
Please reload the page to see if there are any updates.

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.

View detailed surf forecast for Sumpters at:
surf-forecast.com

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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