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Dias Beach Surf Forecast
/ Garden Route (22 surf breaks) /
Surf Forecasts:
Dias Beach surfForecast / Garden Route / South Africa
16 Day Weather and Surf, issued 7 am Monday 18 May 2026 SASTForecast update in hr min s Forecast update imminent
Dias Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dias Beach sea temperature is
17.8° C
(Which is normal for this time of year)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 Wednesday (May 20) at 11PM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 0.3m and 15s. Another secondary swell of 0.1m and 12s is also forecast. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Dias Beach in the next 16 days are 3.0m 9s and forecast to arrive on Thursday (May 21) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Friday (May 22) at 5AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 20th May) | 10ft (3.0m) 9s |
| Best Surf | 11PM (Wed 20th May) | 10ft (3.0m) 9s |
| Most Powerful | 2AM (Thu 21st May) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Dias Beach over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 16mm), heaviest on Wed night. Warm (max 20°C on Wed afternoon, min 17°C on Mon morning). Winds increasing (calm on Mon morning, fresh winds from the E by Tue night). | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Thu afternoon, min 16°C on Fri 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 |  |  |  |  |  |  |  | ||||||||||||||
SW 16 | SSW 15 | S 8 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | S 18 | SSW 16 | SSW 15 | SSW 14 | SSW 13 | SSW 15 | SW 14 | SSW 16 | SSW 15 | |
258 | 339 | 265 | 418 | 897 | 1006 | 886 | 931 | 1376 | 550 | 422 | 262 | 162 | 232 | 196 | 180 | 219 | 125 | 189 | 237 | 455 | |
Wind (km/h) | |||||||||||||||||||||
on | on | on | cross-on | on | cross-on | cross-on | on | cross | off | cross | glassy | cross-off | cross | off | cross-off | cross-on | glassy | glassy | cross-on | glassy | |
High Tide | 4:49PM1.94m | 5:04AM2.00m | 5:36PM1.87m | 5:52AM1.86m | 6:28PM1.78m | 6:45AM1.68m | 7:27PM1.68m | 7:47AM1.52m | 8:37PM1.60m | 9:05AM1.40m | 9:57PM1.58m | 10:32AM1.36m | 11:14PM1.61m | ||||||||
Low Tide | 10:32AM0.15m | 10:44PM0.30m | 11:15AM0.24m | 11:32PM0.42m | 12:00PM0.36m | 00:27AM0.55m | 12:52PM0.50m | 1:37AM0.69m | 1:57PM0.63m | 3:11AM0.76m | 3:21PM0.71m | 4:49AM0.75m | 4:47PM0.72m | ||||||||
 |  |  |  |  | |  | | | | |  | | | | | | | | |  | |
 | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — |
 | — | 5:36 | — | — | 5:36 | — | — | 5:35 | — | — | 5:34 | — | — | 5:34 | — | — | 5:32 | — | — | 5:32 | — |
— | — | 1 | 1 | 3 | 1 | 2 | 2 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 19 | 18 | 18 | 19 | 18 | 19 | 20 | 18 | 21 | 23 | 18 | 19 | 20 | 18 | 18 | 19 | 17 | 19 | 20 | 17 |
17 | 17 | 15 | 17 | 17 | 14 | 17 | 18 | 17 | 21 | 23 | 18 | 19 | 19 | 18 | 18 | 18 | 18 | 20 | 20 | 18 | |
Swell 1 Height (m) Direction Period (s) | SW 16 | SSW 15 | S 8 | SE 8 | SSE 14 | SSE 13 | ESE 8 | SW 12 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SSW 15 | SSW 14 | SSW 13 | SSW 12 | SW 14 | SSW 16 | SSW 15 |
 kJ | 258 | 339 | 265 | 418 | 71 | 106 | 620 | 23 | 943 | 550 | 422 | 262 | 137 | 77 | 196 | 180 | 219 | 96 | 189 | 237 | 455 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 12 | SW 13 | SW 14 | SW 14 | SW 13 | SSE 12 | S 16 | SSW 14 | SSW 13 | SSW 12 | SSW 19 | S 18 | SSW 16 | E 7 | ESE 9 | E 11 | SSW 15 | SSW 18 | SSW 13 | SE 11 |
| kJ | 80 | 104 | 175 | 92 | 65 | 43 | 94 | 19 | 81 | 69 | 61 | 125 | 162 | 232 | 39 | 26 | 63 | 125 | 123 | 113 | 29 |
Swell 3 Height (m) Direction Period (s) | SSE 13 | S 18 | SSE 12 | SE 15 | SSW 11 | — | SW 12 | SSW 9 | SW 11 | S 22 | S 21 | S 12 | S 10 | SSE 10 | S 6 | SSE 6 | SSE 6 | ESE 11 | SSE 11 | SSE 11 | E 10 |
| kJ | 95 | 6 | 26 | 54 | 22 | — | 23 | 8 | 19 | 9 | 35 | 25 | 32 | 32 | 10 | 10 | 10 | 39 | 51 | 47 | 18 |
Wind waves Height (m) Direction Period (s) | — | SE 6 | E 6 | — | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | — | — | W 4 | SW 4 | SW 5 | SW 4 | — | — | — | — | — | — |
| kJ | — | 58 | 49 | — | 897 | 1006 | 886 | 931 | 1376 | — | — | 7 | 5 | 11 | 4 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 23 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 4 | 0 | 0 | 4 | 0 |
Best forecast wave conditions in Garden Route | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 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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