Surf Forecasts:
Stewart Island - Saber Reef surf forecast from 27 Aug 2026:
- Best quality surf: Friday 28 Aug, 3AM (local time) - 4.5ft (1.3m), 12s period, SW swell with glassy winds.
- Most powerful swell: Monday 31 Aug, 12PM (local time) - 16ft (5.0m), 14s period, SW swell with 11,234 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 3AM (local time) - 4.5ft (1.3m), 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 Friday (Aug 28) at 3AM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 1.5m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Stewart Island - Saber Reef in the next 16 days are 5.0m 14s and forecast to arrive on Monday (Aug 31) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 8.0m 14s period and expected on Sunday (Aug 30) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Fri 28th Aug) | 4.5ft (1.3m) 12s |
| Best Surf | 3AM (Fri 28th Aug) | 4.5ft (1.3m) 12s |
| Most Powerful | 12PM (Mon 31st Aug) | 16ft (5.0m) 14s |
Table - best surf conditions forecast for Stewart Island - Saber Reef over the next 16 days.
Short Range ForecastHeavy rain (total 35mm), heaviest during Fri morning. Very mild (max 10°C on Fri morning, min 7°C on Thu morning). Winds increasing (calm on Thu night, gales from the W by Sat night). | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Sun afternoon. Very mild (max 12°C on Tue night, min 6°C on Mon afternoon). Winds decreasing (severe gales from the W on Sun morning, fresh winds from the WSW by Mon night). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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 | ENE 9 | SW 11 | SSE 10 | ENE 11 | ENE 10 | ESE 13 | ENE 10 | WSW 14 | WSW 14 | WSW 15 | WSW 15 | S 24 | SSW 21 | SSW 19 | SW 18 | S 10 | S 10 | S 10 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3391 | 1446 | 754 | 363 | 128 | 88 | 22 | 17 | 9 | 0 | 0 | 0 | 0 | 11 | 45 | 72 | 926 | 288 | 98 | 71 | 61 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 12:37PM2.11m | 00:46AM2.14m | 1:11PM2.16m | 1:21AM2.19m | 1:46PM2.19m | 1:57AM2.22m | 2:21PM2.19m | 2:34AM2.22m | 2:58PM2.17m | 3:15AM2.19m | 3:38PM2.12m | 4:00AM2.13m | 4:24PM2.05m | ||||||||
Low Tide | 6:38PM0.36m | 6:56AM0.20m | 7:13PM0.30m | 7:31AM0.16m | 7:48PM0.26m | 8:07AM0.15m | 8:24PM0.25m | 8:45AM0.19m | 9:03PM0.27m | 9:26AM0.27m | 9:46PM0.33m | 10:12AM0.37m | 10:36PM0.40m | ||||||||
 |  |  | |  |  | |  | | | | | | |  |  | | | | | | |
 | 7:30 | — | — | 7:28 | — | — | 7:26 | — | — | 7:24 | — | — | 7:22 | — | — | 7:20 | — | — | 7:18 | — | — |
 | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:19 | — |
mm | — | 6 | 2 | 9 | 1 | 5 | — | 2 | 10 | 2 | 3 | 5 | 4 | 3 | — | — | 1 | 2 | 1 | 2 | 3 |
Temp °C | 8 | 8 | 9 | 10 | 10 | 10 | 9 | 10 | 10 | 7 | 7 | 7 | 7 | 6 | 9 | 11 | 11 | 12 | 13 | 13 | 10 |
Feels °C | -4 | -1 | 7 | 3 | 0 | 0 | -3 | -2 | 0 | -9 | -7 | -6 | -4 | -8 | -2 | -1 | -1 | 0 | 1 | 2 | 0 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | E 9 | SW 11 | SSE 10 | SSE 10 | ENE 10 | ENE 9 | ENE 10 | — | — | — | — | S 24 | SW 22 | WSW 13 | S 10 | S 10 | S 10 | S 10 | WSW 15 |
| kJ | 3391 | 1446 | 476 | 363 | 128 | 71 | 22 | 8 | 9 | — | — | — | — | 11 | 118 | 6741 | 502 | 288 | 98 | 71 | 9028 |
Swell 2 Height (m) Direction Period (s) | NNW 8 | S 11 | SW 12 | E 8 | E 9 | ENE 11 | SSE 10 | ESE 13 | SE 12 | — | — | — | — | — | SSW 21 | WSW 20 | SW 18 | — | — | — | S 9 |
| kJ | 6 | 396 | 580 | 165 | 106 | 88 | 9 | 17 | 6 | — | — | — | — | — | 45 | 432 | 926 | — | — | — | 61 |
Swell 3 Height (m) Direction Period (s) | — | WSW 14 | S 10 | S 10 | SSE 12 | WSW 21 | ESE 13 | ESE 13 | — | — | — | — | — | — | — | SSW 19 | — | — | — | — | ESE 13 |
| kJ | — | 301 | 254 | 204 | 61 | 241 | 17 | 16 | — | — | — | — | — | — | — | 72 | — | — | — | — | 17 |
Wind waves Height (m) Direction Period (s) | E 6 | E 7 | ENE 9 | — | W 11 | W 8 | WSW 11 | W 12 | WSW 13 | WSW 14 | WSW 14 | WSW 15 | WSW 15 | WSW 14 | WSW 13 | — | WSW 14 | W 15 | W 11 | WSW 13 | — |
| kJ | 223 | 679 | 754 | — | 1011 | 1424 | 5269 | 7341 | 11701 | 20805 | 25505 | 19326 | 18562 | 15526 | 10667 | — | 6364 | 8983 | 6751 | 6008 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 537 | 809 | 89 | 89 | 166 | 166 | 221 | 221 | 166 | 318 | 567 | 232 | 318 | 718 | 799 | 92 | 224 | 119 | 156 | 92 | 306 |
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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