Surf Forecasts:
Stewart Island - Saber Reef surf forecast from 17 Jun 2026:
- Best quality surf: Thursday 18 Jun, 9PM (local time) - 15ft (4.5m), 15s period, SW swell with cross-onshore winds.
- Most powerful swell: Monday 22 Jun, 9AM (local time) - 16ft (5.0m), 17s period, SW swell with 14,919 kJ wave energy.
- Next surfable swell (1★+): Thursday 18 Jun, 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 Thursday (Jun 18) at 9PM. The primary swell is predicted to be 4.5m and 15s period. 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 17s and forecast to arrive on Monday (Jun 22) at 9AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 9s period and expected on Friday (Jun 19) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 18th Jun) | 15ft (4.5m) 15s |
| Best Surf | 9PM (Thu 18th Jun) | 15ft (4.5m) 15s |
| Most Powerful | 9AM (Mon 22nd Jun) | 16ft (5.0m) 17s |
Table - best surf conditions forecast for Stewart Island - Saber Reef over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 34mm), heaviest during Fri night. Very mild (max 16°C on Fri afternoon, min 9°C on Thu afternoon). Winds increasing (light winds from the NW on Thu night, gales from the NW by Fri afternoon). | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Tue morning. Very mild (max 11°C on Sun afternoon, min 9°C on Tue night). Winds decreasing (strong winds from the W on Sun afternoon, calm by Mon morning). | ||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 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 |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WSW 12 | SW 14 | SW 15 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 16 | SW 15 | E 14 | SW 13 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 18 | SE 10 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 9461 | 8255 | 3592 | 1778 | 1299 | 1154 | 1331 | 628 | 326 | 16 | 5746 | 14919 | 10539 | 5726 | 2557 | 1637 | 1451 | 2393 | 33 | 21 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross | cross-on | glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-on | on |
High Tide | 3:47PM2.37m | 4:03AM2.33m | 4:42PM2.28m | 5:00AM2.24m | 5:38PM2.18m | 5:58AM2.14m | 6:34PM2.07m | 6:57AM2.03m | 7:30PM1.99m | 7:57AM1.95m | 8:26PM1.93m | 8:56AM1.91m | 9:21PM1.90m | ||||||||
Low Tide | 9:21AM-0.03m | 9:50PM0.21m | 10:18AM0.05m | 10:46PM0.27m | 11:16AM0.15m | 11:44PM0.34m | 12:14PM0.27m | 00:44AM0.41m | 1:13PM0.38m | 1:43AM0.46m | 2:11PM0.47m | 2:40AM0.50m | 3:06PM0.54m | ||||||||
 |  |  | | |  |  | | |  | |  | | |  | | | | | | | |
 | 8:34 | — | — | 8:34 | — | — | 8:34 | — | — | 8:36 | — | — | 8:36 | — | — | 8:36 | — | — | 8:36 | — | — |
 | — | 5:04 | — | — | 5:04 | — | — | 5:04 | — | — | 5:04 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — |
mm | 1 | — | — | — | 1 | 26 | 2 | 4 | — | — | — | 4 | 1 | — | — | 2 | 1 | 2 | — | — | 2 |
Temp °C | 11 | 10 | 11 | 15 | 16 | 15 | 12 | 12 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 10 | 10 | 11 | 10 |
Feels °C | 2 | 3 | 4 | 5 | 4 | 6 | 5 | 3 | 2 | 3 | 3 | 3 | 10 | 9 | 8 | 7 | 8 | 8 | 8 | 7 | 5 |
Swell 1 Height (m) Direction Period (s) | — | SW 14 | SW 15 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 16 | SW 15 | WSW 15 | NW 9 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | WSW 13 | SW 16 | WSW 15 |
| kJ | — | 9461 | 8255 | 3592 | 1778 | 1299 | 1154 | 1331 | 628 | 326 | 279 | 31 | 14919 | 10539 | 5726 | 2557 | 1637 | 1451 | 1422 | 4474 | 3195 |
Swell 2 Height (m) Direction Period (s) | — | — | — | WSW 22 | S 10 | SW 19 | SW 17 | SW 17 | ENE 8 | NE 8 | E 14 | NW 9 | NW 9 | NW 9 | NW 8 | S 11 | S 10 | SSE 9 | SW 18 | SE 10 | ENE 7 |
| kJ | — | — | — | 45 | 104 | 535 | 974 | 663 | 6 | 3 | 16 | 70 | 29 | 20 | 11 | 345 | 158 | 66 | 2393 | 33 | 21 |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 22 | SW 21 | E 18 | E 17 | ENE 7 | SE 16 | SE 15 | SE 15 | ENE 11 | — | — | — | NW 8 | NW 8 | WSW 22 | SSE 10 | ENE 7 | SSE 9 |
| kJ | — | — | — | 9 | 113 | 6 | 6 | 5 | 10 | 9 | 8 | 11 | — | — | — | 11 | 2 | 48 | 31 | 15 | 8 |
Wind waves Height (m) Direction Period (s) | WSW 12 | — | — | WNW 8 | WNW 9 | WNW 10 | W 9 | WNW 9 | WSW 12 | WSW 10 | WSW 12 | SW 13 | — | — | — | — | — | N 7 | — | — | — |
| kJ | 6295 | — | — | 463 | 3197 | 2676 | 1055 | 860 | 2069 | 1393 | 3289 | 5746 | — | — | — | — | — | 4 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 221 | 119 | 89 | 95 | 119 | 89 | 145 | 92 | 145 | 119 | 145 | 119 | 89 | 89 | 89 | 0 | 0 | 0 | 0 | 145 | 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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