Surf Forecasts:
Stewart Island - Saber Reef surf forecast from 15 Oct 2026:
- Best quality surf: Sunday 18 Oct, 1AM (local time) - 11ft (3.5m), 12s period, SW swell with cross-shore winds.
- Most powerful swell: Sunday 18 Oct, 1PM (local time) - 11ft (3.5m), 15s period, SW swell with 4,929 kJ wave energy.
- Next surfable swell (1★+): Sunday 18 Oct, 1AM (local time) - 11ft (3.5m), 12s 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 Sunday (Oct 18) at 1AM. The primary swell is predicted to be 3.5m and 12s period with a secondary swell of 3.0m and 12s. Another secondary swell of 0.1m and 7s is also forecast. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Stewart Island - Saber Reef in the next 16 days are 3.5m 15s and forecast to arrive on Sunday (Oct 18) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 14s period and expected on Monday (Oct 19) at 1AM.
| Wave Type | Time (NZDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 18th Oct) | 11ft (3.5m) 12s |
| Best Surf | 1AM (Sun 18th Oct) | 11ft (3.5m) 12s |
| Most Powerful | 1PM (Sun 18th Oct) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for Stewart Island - Saber Reef over the next 16 days.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu morning. Very mild (max 10°C on Sat night, min 7°C on Thu morning). Winds increasing (light winds from the WSW on Fri night, fresh winds from the WNW by Sat night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sun night. Very mild (max 12°C on Tue morning, min 8°C on Tue night). Mainly gales. | ||||||||||||||||||||
Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | |||||||||||||||
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) | SE 7 | S 6 | SSW 7 | S 9 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 15 | SW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | SW 16 | W 15 | S 10 | S 9 | S 9 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 347 | 117 | 456 | 404 | 1336 | 1234 | 1852 | 1702 | 2960 | 4501 | 4310 | 0 | 0 | 0 | 0 | 1871 | 0 | 30 | 26 | 26 | 37 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross | cross | cross-off | cross-on | cross-on | cross-on | cross-off |
High Tide | 4:52PM1.94m | 5:26AM1.91m | 5:41PM1.83m | 6:20AM1.81m | 6:37PM1.74m | 7:21AM1.75m | 7:40PM1.70m | 8:26AM1.73m | 8:44PM1.70m | 9:26AM1.76m | 9:41PM1.75m | 10:17AM1.82m | 10:30PM1.84m | ||||||||
Low Tide | 10:45AM0.58m | 11:07PM0.54m | 11:35AM0.70m | 00:00AM0.65m | 12:33PM0.80m | 1:02AM0.72m | 1:40PM0.84m | 2:09AM0.74m | 2:45PM0.82m | 3:11AM0.69m | 3:42PM0.75m | 4:03AM0.61m | 4:29PM0.65m | ||||||||
 |  |  |  | |  |  | | | | |  | | | | | | | | |  | |
 | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | 8:15 | — | — | 8:16 | — | — | 8:19 | — | — | 8:20 | — | — | 8:22 | — | — | 8:22 | — | — | 8:23 | — |
mm | 1 | — | 1 | — | — | — | — | — | — | — | — | 3 | 1 | — | — | — | 1 | 2 | — | — | — |
Temp °C | 8 | 9 | 8 | 9 | 9 | 8 | 9 | 9 | 10 | 11 | 11 | 11 | 11 | 10 | 11 | 12 | 12 | 12 | 10 | 10 | 12 |
Feels °C | 0 | 2 | 0 | 4 | 4 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 5 | 3 | 4 | 3 | 0 | 2 | 5 | 5 | 6 |
Swell 1 Height (m) Direction Period (s) | W 15 | W 14 | WSW 13 | WSW 12 | SW 12 | SW 12 | SW 12 | E 8 | SW 12 | SW 15 | SW 14 | — | — | — | W 21 | SW 16 | — | WSW 16 | S 9 | S 9 | S 9 |
| kJ | 1860 | 1509 | 901 | 522 | 1336 | 1234 | 1347 | 4 | 2124 | 4501 | 4310 | — | — | — | 35 | 1871 | — | 904 | 26 | 26 | 37 |
Swell 2 Height (m) Direction Period (s) | SW 10 | E 7 | E 8 | SW 10 | S 8 | S 10 | S 9 | NE 10 | E 7 | — | WSW 18 | — | — | — | — | — | — | S 10 | — | — | W 22 |
| kJ | 94 | 117 | 82 | 348 | 200 | 220 | 142 | 4 | 1 | — | 713 | — | — | — | — | — | — | 30 | — | — | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | SSE 11 | SW 13 | WSW 12 | ESE 8 | E 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | S 15 |
| kJ | — | — | 12 | 352 | 189 | 22 | 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 |
Wind waves Height (m) Direction Period (s) | SE 7 | S 6 | SSW 7 | S 9 | — | — | SW 12 | SW 12 | SW 12 | WNW 6 | WNW 7 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | W 12 | W 15 | W 13 | WSW 14 | WSW 13 | WSW 13 |
| kJ | 347 | 108 | 456 | 404 | — | — | 1852 | 1702 | 2960 | 237 | 444 | 7789 | 6278 | 4480 | 4196 | 3820 | 9094 | 5488 | 4486 | 2911 | 1780 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 98 | 678 | 270 | 98 | 98 | 92 | 92 | 176 | 119 | 119 | 174 | 221 | 119 | 174 | 119 | 95 | 174 | 306 | 92 | 567 | 89 |
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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