- Forecast
- Maps
- Live
- Weather State
- Spot Information
Crab Island Surf Forecast
/ Wales – Gower (29 surf breaks) /
Surf Forecasts:
Crab Island surfForecast / Wales – Gower / UK
16 Day Weather and Surf, issued 12 am Monday 18 May 2026 BSTForecast update in hr min s Forecast update imminent
Crab Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Crab Island sea temperature is
12.9° C
(Which is 1.5°C warmer than normal for this time of year)Best Forecast Surf Conditions for Crab Island this week:
The surf forecast for Crab Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (May 23) at 4PM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.4m and 3s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Crab Island in the next 16 days are 2.5m 14s and forecast to arrive on Wednesday (May 20) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Sat 23rd May) | 3ft (0.9m) 10s |
| Best Surf | 4PM (Sat 23rd May) | 3ft (0.9m) 10s |
| Most Powerful | 7AM (Wed 20th May) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 33mm), heaviest during Sun night. Very mild (max 14°C on Wed afternoon, min 9°C on Sun night). Winds decreasing (strong winds from the WSW on Tue night, moderate winds from the SW by Wed afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sat afternoon, min 13°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
WSW 7 | WSW 7 | WSW 6 | SW 8 | WSW 8 | WSW 9 | WSW 13 | WSW 13 | WSW 12 | WSW 10 | WSW 10 | WSW 10 | WSW 13 | WSW 12 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | |
328 | 210 | 121 | 346 | 620 | 1010 | 2084 | 1387 | 761 | 378 | 312 | 298 | 289 | 467 | 281 | 194 | 140 | 107 | 65 | 45 | 24 | |
Wind (km/h) | |||||||||||||||||||||
cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | glassy | off | cross-on | cross-on | cross-off | |
High Tide | 8:03AM9.54m | 8:22PM9.58m | 8:51AM9.39m | 9:10PM9.41m | 9:40AM9.09m | 9:59PM9.09m | 10:31AM8.67m | 10:52PM8.68m | 11:26AM8.22m | 11:50PM8.28m | 12:28PM7.83m | 00:56AM7.98m | 1:36PM7.63m | 2:05AM7.87m | |||||||
Low Tide | 2:03PM1.05m | 2:28AM1.10m | 2:49PM1.23m | 3:17AM1.32m | 3:37PM1.56m | 4:09AM1.67m | 4:28PM1.96m | 5:07AM2.06m | 5:27PM2.38m | 6:13AM2.40m | 6:35PM2.69m | 7:23AM2.58m | 7:49PM2.79m | ||||||||
 |  |  | | |  |  |  |  | | | | | | | | |  | | | | |
 | 5:20 | — | — | 5:18 | — | — | 5:16 | — | — | 5:16 | — | — | 5:15 | — | — | 5:13 | — | — | 5:11 | — | — |
 | — | — | 9:05 | — | — | 9:06 | — | — | 9:07 | — | — | 9:08 | — | — | 9:09 | — | — | 9:12 | — | — | 9:13 |
3 | 2 | 8 | 3 | 2 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 11 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 17 | 18 | 16 | 20 | 21 | 19 | 19 | 22 | 20 | 22 | 24 | 23 |
5 | 5 | 7 | 6 | 6 | 5 | 7 | 9 | 12 | 16 | 17 | 11 | 19 | 21 | 17 | 18 | 23 | 21 | 22 | 25 | 24 | |
Swell 1 Height (m) Direction Period (s) | W 11 | W 10 | WSW 6 | W 15 | — | W 16 | — | — | WSW 12 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 12 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 8 |
 kJ | 23 | 2 | 121 | 4 | — | 188 | — | — | 761 | 378 | 312 | 298 | 200 | 467 | 281 | 194 | 140 | 107 | 65 | 45 | 24 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 16 | WSW 13 | — | — | — | — | — | SW 14 | SW 14 | SW 13 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 10 | 289 | — | — | — | — | — | 8 | 8 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 7 | WSW 7 | S 4 | SW 8 | WSW 8 | WSW 9 | WSW 13 | WSW 13 | — | — | — | SE 3 | — | — | — | — | SE 3 | — | E 2 | ESE 3 | ESE 3 |
| kJ | 328 | 210 | 13 | 346 | 620 | 1010 | 2084 | 1387 | — | — | — | 5 | — | — | — | — | 2 | — | 1 | 3 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 144 | 68 | 427 | 450 | 365 | 320 | 320 | 251 | 68 | 19 | 19 | 19 | 18 | 10 | 13 | 19 | 0 | 0 | 14 | 20 | 51 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 Crab Island 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 Crab Island Surf forecast
The above surf forecast table for Crab Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Crab Island can be found by selecting the local surf guide option on the grey menu. Our Crab Island 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 (Crab Island) 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 Crab Island 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.
Crab Island is 8 km (5 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.
Nearest