Surf Forecasts:
Stewart Island - Saber Reef surf forecast from 7 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 12AM (local time) - 4ft (1.2m), 7s period, ENE swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 9AM (local time) - 5ft (1.6m), 10s period, ENE swell with 471 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 9PM (local time) - 3.5ft (1.0m), 7s period with E swell.
Best Forecast Surf Conditions for Stewart Island - Saber Reef this week:
The surf forecast for Stewart Island - Saber Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 10) at 9PM. The primary swell is predicted to be 1.0m and 7s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Stewart Island - Saber Reef in the next 16 days are 1.6m 10s and forecast to arrive on Thursday (Aug 13) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 16s period and expected on Saturday (Aug 15) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 10th Aug) | 3.5ft (1.0m) 7s |
| Best Surf | 12AM (Tue 11th Aug) | 4ft (1.2m) 7s |
| Most Powerful | 9AM (Thu 13th Aug) | 5ft (1.6m) 10s |
Table - best surf conditions forecast for Stewart Island - Saber Reef over the next 16 days.
Short Range ForecastLight rain (total 9mm), mostly falling on Sun morning. Very mild (max 11°C on Mon afternoon, min 8°C on Sun morning). Winds increasing (light winds from the NE on Fri night, fresh winds from the E by Sat night). | Days 5-7 Weather SummarySome drizzle, heaviest during Tue night. Very mild (max 14°C on Thu afternoon, min 9°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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) | S 9 | SSE 8 | SSE 8 | WSW 13 | E 6 | SSE 9 | SSE 8 | E 6 | SE 14 | ENE 7 | E 7 | E 6 | E 7 | E 7 | E 8 | E 10 | ENE 10 | E 10 | E 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 76 | 46 | 22 | 0 | 143 | 32 | 27 | 28 | 48 | 139 | 55 | 62 | 89 | 218 | 212 | 257 | 471 | 206 | 115 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | cross-off | cross |
High Tide | 8:29AM1.98m | 8:55PM1.97m | 9:42AM2.07m | 10:04PM2.07m | 10:48AM2.19m | 11:05PM2.20m | 11:45AM2.31m | 00:00AM2.33m | 12:37PM2.39m | 00:51AM2.42m | 1:25PM2.43m | 1:39AM2.46m | |||||||
Low Tide | 2:10AM0.49m | 2:49PM0.56m | 3:20AM0.39m | 3:56PM0.47m | 4:23AM0.25m | 4:55PM0.35m | 5:20AM0.09m | 5:48PM0.23m | 6:13AM-0.03m | 6:38PM0.12m | 7:02AM-0.11m | 7:25PM0.06m | |||||||
 |  | |  |  |  |  |  | | | | | | |  | | | | | |
 | — | 8:02 | — | — | 8:00 | — | — | 7:58 | — | — | 7:56 | — | — | 7:56 | — | — | 7:54 | — | — |
 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — |
mm | — | — | — | 1 | 6 | 2 | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 11 | 9 | 10 | 11 | 10 | 12 | 12 | 12 | 13 | 14 | 12 |
Feels °C | 6 | 5 | 5 | 4 | 2 | 3 | 4 | 6 | 7 | 5 | 6 | 7 | 6 | 9 | 6 | 7 | 10 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 14 | WSW 15 | WSW 13 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 17 | WSW 16 | WSW 15 | NW 12 | SW 18 | WSW 16 | WSW 16 | WSW 16 | WSW 15 |
| kJ | 596 | 638 | 970 | 711 | 1697 | 1491 | 1517 | 1172 | 968 | 501 | 717 | 798 | 443 | 416 | 703 | 1321 | 1713 | 1811 | 1225 |
Swell 2 Height (m) Direction Period (s) | S 9 | WSW 18 | SSE 8 | WSW 18 | WNW 8 | SSE 9 | SSE 8 | SSE 8 | SE 8 | WSW 19 | WSW 12 | E 6 | E 6 | E 7 | NW 11 | E 10 | E 10 | NW 11 | E 10 |
| kJ | 76 | 249 | 22 | 448 | 26 | 32 | 27 | 25 | 15 | 549 | 237 | 38 | 54 | 131 | 205 | 257 | 250 | 249 | 115 |
Swell 3 Height (m) Direction Period (s) | NW 8 | SSE 8 | WNW 7 | WNW 9 | SE 11 | NW 8 | E 14 | ESE 14 | SE 14 | E 7 | E 7 | NW 7 | NW 11 | WSW 14 | WSW 13 | NW 11 | WNW 10 | E 10 | W 8 |
| kJ | 14 | 46 | 18 | 56 | 31 | 15 | 4 | 20 | 48 | 63 | 55 | 12 | 58 | 290 | 151 | 71 | 185 | 206 | 64 |
Wind waves Height (m) Direction Period (s) | E 3 | ENE 3 | E 4 | E 6 | E 6 | E 6 | E 6 | E 6 | E 7 | ENE 7 | — | E 6 | E 7 | E 7 | E 8 | NW 8 | ENE 10 | — | — |
| kJ | 5 | 4 | 8 | 86 | 143 | 120 | 50 | 28 | 44 | 139 | — | 62 | 89 | 218 | 212 | 353 | 471 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 94 | 94 | 94 | 94 | 90 | 90 | 90 | 94 | 94 | 0 | 89 | 0 | 0 | 0 | 0 | 0 | 94 | 0 | 145 |
Best forecast wave conditions in Southland | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
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Information about the Stewart Island - Saber Reef Surf forecast
The above surf forecast table for Stewart Island - Saber Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Stewart Island - Saber Reef can be found by selecting the local surf guide option on the grey menu. Our Stewart Island - Saber Reef 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 (Stewart Island - Saber Reef) 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 Stewart Island - Saber Reef 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.
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