Surf Forecasts:
Stewart Island - Saber Reef surf forecast from 18 Jun 2026:
- Best quality surf: Sunday 21 Jun, 9PM (local time) - 13ft (4.0m), 12s period, SW swell with cross-shore winds.
- Most powerful swell: Friday 26 Jun, 3AM (local time) - 21ft (6.5m), 16s period, SW swell with 22,714 kJ wave energy.
- Next surfable swell (1★+): Sunday 21 Jun, 9PM (local time) - 13ft (4.0m), 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 (Jun 21) at 9PM. The primary swell is predicted to be 4.0m and 12s period with a secondary swell of 3.0m and 12s. 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 6.5m 16s and forecast to arrive on Friday (Jun 26) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.0m 11s period and expected on Thursday (Jun 25) at 9AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 21st Jun) | 13ft (4.0m) 12s |
| Best Surf | 9PM (Sun 21st Jun) | 13ft (4.0m) 12s |
| Most Powerful | 3AM (Fri 26th Jun) | 21ft (6.5m) 16s |
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 28mm), heaviest during Fri night. Very mild (max 16°C on Fri afternoon, min 10°C on Sat night). Winds decreasing (gales from the NW on Fri afternoon, light winds from the WNW by Sun night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed night. Very mild (max 11°C on Mon morning, min 7°C on Wed night). Mainly near gales. | ||||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | |||||||||||||||
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) | SW 14 | SW 13 | SW 13 | ENE 7 | SE 16 | SW 16 | SW 14 | E 15 | SW 13 | SW 17 | SW 16 | SW 15 | S 11 | SW 14 | SW 20 | SW 16 | SW 15 | ENE 8 | ENE 10 | SW 12 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5042 | 1834 | 1037 | 11 | 10 | 628 | 614 | 4 | 3550 | 11175 | 8749 | 4618 | 205 | 2020 | 2535 | 4748 | 3615 | 6 | 33 | 8137 | 20676 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross-off | off | cross-off | cross-off | off | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 9:52AM1.90m | 10:12PM1.90m | ||||||||
Low Tide | 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 | 3:33AM0.51m | 3:58PM0.58m | ||||||||
 | |  | |  |  |  | |  | | | | | | | |  |  | | | | |
 | 8:34 | — | — | 8:34 | — | — | 8:36 | — | — | 8:36 | — | — | 8:36 | — | — | 8:36 | — | — | 8:36 | — | — |
 | — | 5:04 | — | — | 5:04 | — | — | 5:04 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:06 | — |
mm | — | — | 26 | — | 1 | — | — | — | 1 | — | — | 1 | — | — | — | — | — | 3 | 2 | — | 1 |
Temp °C | 13 | 16 | 14 | 12 | 12 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 10 | 10 | 11 | 8 | 9 | 10 |
Feels °C | 5 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 6 | 6 | 5 | 5 | 4 | 7 | 4 | 6 | 8 | 4 | -4 | -2 | 0 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | WSW 18 | SW 17 | SW 16 | SW 14 | WSW 14 | SW 13 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 15 | ENE 8 | ENE 10 | ENE 11 | ENE 10 |
| kJ | 5042 | 1834 | 1037 | 541 | 663 | 628 | 614 | 367 | 3550 | 11175 | 8749 | 4618 | 2519 | 2020 | 1760 | 4748 | 3615 | 6 | 33 | 25 | 19 |
Swell 2 Height (m) Direction Period (s) | WSW 22 | S 10 | SW 19 | ENE 7 | ENE 7 | NW 9 | E 15 | E 11 | NW 9 | NW 9 | NW 9 | NNW 9 | S 11 | S 11 | SW 20 | SSE 9 | E 5 | — | — | — | — |
| kJ | 45 | 135 | 535 | 9 | 5 | 84 | 4 | 2 | 40 | 28 | 12 | 30 | 205 | 146 | 2535 | 17 | 15 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | S 22 | SW 21 | SE 18 | SE 17 | SE 16 | NE 10 | SE 15 | E 15 | NE 11 | NW 9 | — | — | NNW 8 | ENE 9 | S 10 | — | — | — | — | — | — |
| kJ | 9 | 113 | 12 | 11 | 10 | 4 | 9 | 4 | 5 | 3 | — | — | 6 | 8 | 52 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 7 | WNW 9 | WNW 10 | WSW 11 | WSW 11 | WSW 12 | WSW 10 | WSW 12 | — | — | — | NW 8 | NW 5 | ENE 4 | ENE 4 | ENE 5 | — | WSW 13 | SW 11 | SW 12 | SW 16 |
| kJ | 553 | 2039 | 3472 | 3898 | 3099 | 2037 | 1320 | 2324 | — | — | — | 11 | 61 | 1 | 10 | 33 | — | 4013 | 5526 | 8137 | 20676 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 95 | 95 | 89 | 119 | 119 | 145 | 119 | 145 | 92 | 89 | 89 | 89 | 89 | 0 | 94 | 94 | 0 | 145 | 270 | 382 | 145 |
Best forecast wave conditions in Southland | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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