Surf Forecasts:
Stewart Island - Saber Reef surf forecast from 31 Jul 2026:
- Best quality surf: Monday 3 Aug, 9PM (local time) - 15ft (4.5m), 15s period, SW swell with cross-onshore winds.
- Most powerful swell: Monday 3 Aug, 3PM (local time) - 16ft (5.0m), 16s period, SW swell with 11,376 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 9PM (local time) - 15ft (4.5m), 15s period with SW 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 03) at 9PM. The primary swell is predicted to be 4.5m and 14s period with a secondary swell of 0.2m and 12s. Another secondary swell of 4.5m and 15s is also forecast. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Stewart Island - Saber Reef in the next 16 days are 5.0m 16s and forecast to arrive on Monday (Aug 03) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 6.0m 17s period and expected on Monday (Aug 03) at 3AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 3rd Aug) | 15ft (4.5m) 15s |
| Best Surf | 9PM (Mon 3rd Aug) | 15ft (4.5m) 15s |
| Most Powerful | 3PM (Mon 3rd Aug) | 16ft (5.0m) 16s |
Table - best surf conditions forecast for Stewart Island - Saber Reef over the next 16 days.
Short Range ForecastModerate rain (total 19mm), heaviest on Mon morning. Very mild (max 11°C on Sun morning, min 6°C on Fri afternoon). Winds increasing (moderate winds from the SSW on Fri night, near gales from the WNW by Sun night). | Days 5-7 Weather SummaryMostly dry. Mild temperatures (max 8°C on Mon afternoon, min 5°C on Tue night). Winds decreasing (strong winds from the WSW on Mon afternoon, light winds from the NE by Thu morning). | |||||||||||||||||||
Fri 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | ||||||||||||||
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 12 | S 11 | SSE 11 | SSE 11 | SE 11 | SE 12 | SSW 20 | SE 12 | SE 12 | SW 16 | SW 14 | SSW 13 | SSW 12 | SW 12 | S 10 | S 10 | SSE 10 | SE 9 | S 9 | S 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 13937 | 4680 | 1314 | 610 | 163 | 214 | 307 | 69 | 23 | 11376 | 8071 | 2718 | 1117 | 1180 | 703 | 510 | 302 | 192 | 79 | 494 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | on | on | cross | cross-off | cross | cross-off | cross-off | glassy | cross-off |
High Tide | 2:28AM2.12m | 2:55PM2.11m | 3:05AM2.11m | 3:31PM2.08m | 3:43AM2.08m | 4:09PM2.04m | 4:24AM2.04m | 4:51PM2.00m | 5:12AM2.00m | 5:40PM1.95m | 6:08AM1.96m | 6:37PM1.92m | ||||||||
Low Tide | 8:21PM0.37m | 8:39AM0.24m | 8:56PM0.38m | 9:15AM0.27m | 9:34PM0.40m | 9:54AM0.32m | 10:14PM0.43m | 10:37AM0.39m | 11:00PM0.47m | 11:28AM0.47m | 11:55PM0.51m | 12:28PM0.55m | 00:59AM0.53m | |||||||
 |  |  | | | |  | |  | |  | |  |  | | | | | | | |
 | — | — | 8:11 | — | — | 8:11 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — |
 | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — |
mm | 1 | 1 | — | 3 | 3 | 1 | — | 3 | 7 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 6 | 7 | 8 | 10 | 10 | 11 | 11 | 11 | 9 | 8 | 7 | 7 | 8 | 6 | 6 | 6 | 5 | 7 | 8 | 8 |
Feels °C | -8 | -2 | 1 | 2 | 2 | 3 | 1 | 0 | -2 | -4 | -3 | 0 | 3 | 2 | 3 | 3 | 0 | 4 | 6 | 5 |
Swell 1 Height (m) Direction Period (s) | E 11 | WSW 12 | SSE 11 | SSE 11 | SE 11 | WSW 19 | WSW 19 | SE 12 | SE 12 | SE 12 | SW 14 | SSW 13 | WSW 13 | SW 12 | S 10 | S 10 | SSE 10 | SE 9 | WSW 14 | S 16 |
| kJ | 82 | 579 | 1314 | 610 | 163 | 1301 | 4399 | 51 | 23 | 23 | 8071 | 2718 | 1442 | 1180 | 703 | 510 | 302 | 192 | 342 | 494 |
Swell 2 Height (m) Direction Period (s) | — | E 10 | SSW 10 | S 9 | SE 13 | SE 12 | SE 11 | SE 12 | — | — | ESE 12 | WSW 14 | SSW 12 | S 10 | SW 12 | SW 11 | SW 12 | WSW 12 | S 9 | SW 13 |
| kJ | — | 34 | 282 | 101 | 109 | 214 | 125 | 69 | — | — | 14 | 2702 | 1117 | 696 | 594 | 471 | 273 | 169 | 79 | 245 |
Swell 3 Height (m) Direction Period (s) | — | SW 22 | E 11 | SW 20 | S 9 | SSE 8 | SSW 20 | — | — | — | SE 12 | — | S 11 | WSW 16 | SW 11 | SSW 11 | SSW 10 | SSW 9 | SSE 8 | SSW 8 |
| kJ | — | 18 | 20 | 98 | 61 | 22 | 307 | — | — | — | 23 | — | 723 | 147 | 31 | 24 | 169 | 86 | 64 | 54 |
Wind waves Height (m) Direction Period (s) | SSW 12 | S 11 | WSW 12 | WSW 12 | WSW 9 | WSW 10 | WSW 9 | WSW 17 | WSW 16 | SW 16 | — | — | — | — | — | — | ENE 3 | E 4 | ESE 4 | E 5 |
| kJ | 13937 | 4680 | 1138 | 1649 | 1289 | 1700 | 1895 | 18599 | 15321 | 11376 | — | — | — | — | — | — | 1 | 14 | 14 | 57 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 559 | 363 | 92 | 119 | 221 | 92 | 221 | 224 | 306 | 559 | 363 | 98 | 92 | 89 | 0 | 94 | 0 | 89 | 0 | 0 |
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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