Surf Forecasts:
Stewart Island - Saber Reef surf forecast from 20 Sep 2026:
- Best quality surf: Sunday 27 Sep, 1PM (local time) - 20ft (6.0m), 14s period, SW swell with onshore winds.
- Most powerful swell: Sunday 27 Sep, 1PM (local time) - 20ft (6.0m), 14s period, SW swell with 15,317 kJ wave energy.
- Next surfable swell (1★+): Friday 25 Sep, 6AM (local time) - 2ft (0.6m), 9s period with S 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 (Sep 25) at 6AM. The primary swell is predicted to be 0.6m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Stewart Island - Saber Reef in the next 16 days are 6.0m 14s and forecast to arrive on Sunday (Sep 27) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 7.0m 16s period and expected on Sunday (Sep 20) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 25th Sep) | 2ft (0.6m) 9s |
| Best Surf | 1PM (Sun 27th Sep) | 20ft (6.0m) 14s |
| Most Powerful | 1PM (Sun 27th Sep) | 20ft (6.0m) 14s |
Table - best surf conditions forecast for Stewart Island - Saber Reef over the next 16 days.
Short Range ForecastModerate rain (total 19mm), heaviest on Mon afternoon. Very mild (max 14°C on Mon morning, min 6°C on Tue afternoon). Winds decreasing (gales from the NW on Mon morning, fresh winds from the WSW by Tue afternoon). | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Thu night. Very mild (max 11°C on Fri afternoon, min 7°C on Wed morning). Winds decreasing (strong winds from the WNW on Thu morning, light winds from the NNW by Thu night). | ||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||||
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 17 | WSW 16 | S 17 | S 11 | SSE 10 | ESE 13 | ESE 13 | WSW 14 | WSW 15 | E 11 | S 18 | S 9 | SW 14 | E 11 | S 8 | S 8 | S 8 | S 9 | S 9 | ESE 13 | ESE 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 151 | 144 | 33 | 17 | 17 | 0 | 0 | 10 | 158 | 109 | 1484 | 9 | 65 | 68 | 66 | 102 | 80 | 101 | 66 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-on |
High Tide | 8:32PM1.71m | 9:15AM1.77m | 9:30PM1.77m | 10:06AM1.85m | 10:17PM1.87m | 10:47AM1.94m | 10:57PM1.97m | 11:24AM2.04m | 11:34PM2.08m | 11:59AM2.13m | 00:10AM2.18m | 12:34PM2.20m | 00:48AM2.26m | ||||||||
Low Tide | 2:29PM0.83m | 2:56AM0.70m | 3:26PM0.75m | 3:47AM0.60m | 4:12PM0.65m | 4:30AM0.48m | 4:51PM0.53m | 5:09AM0.36m | 5:27PM0.41m | 5:45AM0.25m | 6:03PM0.30m | 6:21AM0.16m | 6:38PM0.22m | ||||||||
 | |  | |  |  |  | | |  | | | | | | | | | | |  | |
 | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — | 6:33 | — | — | 6:31 | — | — | 6:30 | — | — |
 | — | 6:42 | — | — | 6:43 | — | — | 6:45 | — | — | 6:45 | — | — | 6:46 | — | — | 6:49 | — | — | 6:50 | — |
mm | — | — | — | — | 8 | 3 | 2 | 2 | 4 | 1 | — | 1 | 3 | 4 | 6 | 1 | 1 | — | 1 | 8 | 50 |
Temp °C | 9 | 9 | 10 | 14 | 13 | 9 | 8 | 7 | 6 | 7 | 9 | 10 | 10 | 10 | 9 | 10 | 11 | 10 | 12 | 12 | 11 |
Feels °C | -1 | 0 | 0 | 2 | 1 | -3 | -4 | -2 | -3 | -1 | 1 | 0 | 0 | 3 | 7 | 7 | 7 | 6 | 4 | 4 | 7 |
Swell 1 Height (m) Direction Period (s) | — | WSW 16 | WSW 14 | W 12 | SSE 10 | ESE 13 | ESE 13 | WSW 14 | WSW 15 | WSW 15 | WSW 15 | S 9 | SW 14 | E 11 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | S 9 | ESE 13 |
| kJ | — | 24144 | 8266 | 6289 | 33 | 17 | 17 | 11568 | 12332 | 10406 | 8375 | 109 | 1484 | 9 | 3065 | 1824 | 1323 | 1010 | 403 | 42 | 66 |
Swell 2 Height (m) Direction Period (s) | — | — | S 17 | S 11 | NNE 5 | — | — | — | — | E 11 | S 18 | — | SSE 9 | — | S 8 | S 8 | S 8 | S 9 | S 9 | ESE 13 | SE 18 |
| kJ | — | — | 151 | 144 | 3 | — | — | — | — | 10 | 158 | — | 26 | — | 65 | 68 | 66 | 102 | 80 | 101 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | ESE 11 | ESE 11 | ESE 10 | — | — | — | — | — | E 11 | — | E 11 | — | E 10 | E 15 | ESE 16 | ESE 15 | ESE 14 | W 24 | S 23 |
| kJ | — | — | 12 | 11 | 11 | — | — | — | — | — | 9 | — | 9 | — | 2 | 17 | 25 | 72 | 67 | 11 | 10 |
Wind waves Height (m) Direction Period (s) | WSW 17 | — | WNW 9 | NW 10 | W 12 | WSW 14 | WSW 15 | — | — | — | — | WSW 15 | W 9 | WSW 13 | — | — | — | — | WNW 6 | W 8 | WSW 11 |
| kJ | 41797 | — | 1333 | 3017 | 9045 | 8912 | 12681 | — | — | — | — | 6445 | 2478 | 5876 | — | — | — | — | 366 | 1331 | 5391 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 559 | 1265 | 95 | 221 | 92 | 176 | 224 | 221 | 174 | 145 | 145 | 92 | 156 | 221 | 89 | 0 | 109 | 89 | 89 | 89 | 109 |
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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