Surf Forecasts:
Dias Beach surf forecast from 13 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 2AM (local time) - 5ft (1.6m), 8s period, SW swell with offshore winds.
- Most powerful swell: Thursday 13 Aug, 11AM (local time) - 5ft (1.6m), 19s period, SSW swell with 1,826 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 8PM (local time) - 4.5ft (1.3m), 9s period with ESE swell.
Best Forecast Surf Conditions for Dias Beach this week:
The surf forecast for Dias Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 14) at 8PM. The primary swell is predicted to be 1.3m and 9s period with a secondary swell of 0.7m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Dias Beach in the next 16 days are 1.6m 19s and forecast to arrive on Thursday (Aug 13) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Tuesday (Aug 18) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 14th Aug) | 4.5ft (1.3m) 9s |
| Best Surf | 2AM (Wed 19th Aug) | 5ft (1.6m) 8s |
| Most Powerful | 11AM (Thu 13th Aug) | 5ft (1.6m) 19s |
Table - best surf conditions forecast for Dias Beach over the next 16 days.
Short Range ForecastMostly dry. Warm (max 29°C on Fri afternoon, min 13°C on Sat morning). Winds decreasing (fresh winds from the N on Thu night, calm by Fri night). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Sun morning, min 13°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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) | SSW 19 | SSW 18 | SSW 16 | ESE 9 | ESE 9 | SW 14 | SW 14 | E 8 | SW 14 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 14 | SW 13 | SW 12 | SW 8 | SSW 11 | SSW 11 | SSW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1826 | 1081 | 525 | 383 | 270 | 167 | 155 | 169 | 102 | 201 | 145 | 309 | 304 | 299 | 272 | 249 | 157 | 299 | 496 | 503 | 460 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross | glassy | cross-on | on | cross-off | cross-off | cross | glassy | on | on | glassy | cross-off | cross-off | off | on | on | cross-on |
High Tide | 4:18PM2.14m | 4:32AM2.03m | 4:54PM2.15m | 5:07AM1.99m | 5:29PM2.11m | 5:40AM1.90m | 6:02PM2.01m | 6:12AM1.78m | 6:35PM1.87m | 6:44AM1.64m | 7:09PM1.71m | 7:17AM1.49m | 7:46PM1.55m | ||||||||
Low Tide | 10:02AM0.16m | 10:26PM0.21m | 10:35AM0.15m | 11:00PM0.23m | 11:06AM0.18m | 11:32PM0.31m | 11:35AM0.26m | 00:03AM0.41m | 12:05PM0.38m | 00:34AM0.54m | 12:34PM0.51m | 1:07AM0.68m | 1:07PM0.67m | 1:49AM0.82m | |||||||
 | |  | | | | | |  |  | | | | | | | | |  |  |  | |
 | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — |
 | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | 1 |
Temp °C | 21 | 26 | 26 | 25 | 29 | 15 | 17 | 18 | 19 | 20 | 19 | 16 | 17 | 17 | 15 | 18 | 17 | 15 | 13 | 13 | 13 |
Feels °C | 17 | 22 | 20 | 20 | 25 | 15 | 16 | 16 | 18 | 18 | 16 | 15 | 16 | 16 | 15 | 15 | 14 | 13 | 13 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 8 | ESE 8 | SW 14 | ESE 6 | ESE 7 | SW 15 | SW 15 | SW 14 | SW 13 | SW 14 | SW 13 | SW 12 | SSW 8 | SSW 11 | SSW 11 | SSW 11 |
| kJ | 729 | 542 | 427 | 383 | 270 | 144 | 118 | 118 | 43 | 73 | 145 | 309 | 304 | 299 | 272 | 249 | 157 | 88 | 496 | 503 | 460 |
Swell 2 Height (m) Direction Period (s) | SSW 19 | SSW 18 | SSW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 4 | E 8 | SW 16 | E 8 | E 8 | E 8 | E 11 | E 10 | E 10 | E 10 | SW 12 | E 10 | E 10 | E 9 |
| kJ | 1826 | 1081 | 525 | 353 | 220 | 167 | 155 | 1 | 60 | 201 | 41 | 69 | 78 | 112 | 78 | 52 | 49 | 149 | 17 | 17 | 7 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 9 | S 10 | — | N 4 | SW 7 | SSW 5 | S 12 | SW 14 | SW 16 | SW 5 | SW 5 | E 11 | E 7 | — | — | — | E 10 | — | — | — |
| kJ | 8 | 2 | 2 | — | 3 | 23 | 2 | 3 | 102 | 124 | 10 | 7 | 39 | 26 | — | — | — | 31 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | N 4 | N 4 | S 3 | — | — | E 8 | — | SW 4 | — | — | — | — | — | — | SW 5 | SW 8 | — | — | — |
| kJ | — | — | 12 | 20 | 5 | — | — | 169 | — | 4 | — | — | — | — | — | — | 53 | 299 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 23 | 41 | 23 | 60 | 0 | 62 | 62 | 0 | 0 | 4 | 0 | 4 | 62 | 0 | 4 | 4 | 0 | 62 | 62 | 62 |
Best forecast wave conditions in Garden Route | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Dias Beach 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 Dias Beach Surf forecast
The above surf forecast table for Dias Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Dias Beach can be found by selecting the local surf guide option on the grey menu. Our Dias Beach 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 (Dias Beach) 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 Dias Beach 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.
Dias Beach is 6 km (4 miles) from the city of Mossel Bay. If you plan a holiday in Garden Route, look for hotels and other accommodation in Mossel Bay. Mossel Bay has rooms for a wide range of budgets as well as car hire and transport links.
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