Surf Forecasts:
Stewart Island - Saber Reef surf forecast from 3 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 3AM (local time) - 7ft (2.1m), 12s period, SW swell with glassy winds.
- Most powerful swell: Tuesday 4 Aug, 9AM (local time) - 15ft (4.5m), 12s period, SSW swell with 5,991 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 3AM (local time) - 7ft (2.1m), 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 Wednesday (Aug 05) at 3AM. The primary swell is predicted to be 2.1m and 12s period with a secondary swell of 1.8m and 10s. 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 4.5m 12s and forecast to arrive on Tuesday (Aug 04) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 14s period and expected on Tuesday (Aug 04) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 5th Aug) | 7ft (2.1m) 12s |
| Best Surf | 3AM (Wed 5th Aug) | 7ft (2.1m) 12s |
| Most Powerful | 9AM (Tue 4th Aug) | 15ft (4.5m) 12s |
Table - best surf conditions forecast for Stewart Island - Saber Reef over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Mon night. Mild temperatures (max 7°C on Tue morning, min 5°C on Mon night). Winds decreasing (near gales from the SSW on Mon night, calm by Tue night). | Days 5-7 Weather SummaryMostly dry. Very mild (max 10°C on Sat afternoon, min 5°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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 13 | SSW 12 | SW 12 | SSE 10 | SW 11 | SW 11 | SSE 9 | SW 14 | SE 10 | S 8 | SW 12 | S 10 | S 9 | S 9 | SE 12 | SSE 9 | SSE 12 | SSE 12 | ESE 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 10126 | 5991 | 2779 | 778 | 808 | 568 | 315 | 331 | 110 | 78 | 212 | 118 | 103 | 74 | 55 | 44 | 93 | 91 | 115 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross | on | cross-on | glassy | glassy | glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:24AM2.04m | 4:51PM2.00m | 5:12AM2.00m | 5:40PM1.95m | 6:08AM1.96m | 6:37PM1.92m | 7:15AM1.95m | 7:44PM1.92m | 8:29AM1.98m | 8:55PM1.97m | 9:42AM2.07m | 10:04PM2.07m | |||||||
Low Tide | 10:14PM0.43m | 10:37AM0.39m | 11:00PM0.47m | 11:28AM0.47m | 11:55PM0.51m | 12:28PM0.55m | 00:59AM0.53m | 1:37PM0.59m | 2:10AM0.49m | 2:49PM0.56m | 3:20AM0.39m | 3:56PM0.47m | |||||||
 |  | |  |  | |  |  | | | | |  | | | | | | | |
 | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:03 | — | — | 8:02 | — | — | 8:00 | — | — |
 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 7 | 8 | 9 | 10 | 8 | 9 | 9 | 9 |
Feels °C | -6 | 0 | 1 | 3 | 3 | 3 | 4 | 3 | 3 | 0 | -1 | 2 | 4 | 5 | 6 | 3 | 4 | 5 | 4 |
Swell 1 Height (m) Direction Period (s) | ESE 12 | SSW 12 | SW 12 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSW 9 | SW 13 | WSW 13 | SW 12 | S 10 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 17 | WSW 16 | WSW 15 |
| kJ | 14 | 5991 | 2779 | 778 | 684 | 471 | 315 | 129 | 400 | 290 | 212 | 118 | 589 | 577 | 811 | 586 | 789 | 1923 | 1776 |
Swell 2 Height (m) Direction Period (s) | — | WSW 13 | SSE 11 | WSW 12 | SW 11 | SW 11 | SW 10 | SW 14 | S 8 | S 8 | S 10 | WSW 12 | S 9 | S 9 | SSE 8 | WSW 18 | WSW 13 | SSE 12 | SE 10 |
| kJ | — | 817 | 1244 | 1056 | 808 | 568 | 308 | 331 | 86 | 78 | 121 | 94 | 103 | 74 | 55 | 356 | 440 | 91 | 61 |
Swell 3 Height (m) Direction Period (s) | — | — | WSW 13 | SSW 12 | W 11 | SE 12 | WSW 18 | SW 10 | SE 10 | SW 8 | NW 11 | NW 10 | NW 10 | WSW 18 | SE 12 | SSE 9 | SSE 12 | WNW 8 | NW 8 |
| kJ | — | — | 282 | 532 | 22 | 49 | 65 | 80 | 110 | 43 | 72 | 52 | 15 | 337 | 37 | 44 | 93 | 25 | 15 |
Wind waves Height (m) Direction Period (s) | SW 13 | — | — | — | — | — | — | — | — | ENE 2 | E 4 | E 4 | E 5 | E 4 | E 4 | E 5 | E 5 | E 5 | ESE 10 |
| kJ | 10126 | — | — | — | — | — | — | — | — | 1 | 11 | 13 | 16 | 9 | 11 | 40 | 18 | 11 | 115 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 382 | 98 | 89 | 89 | 89 | 89 | 0 | 0 | 0 | 94 | 94 | 94 | 0 | 94 | 90 | 94 | 94 | 90 | 94 |
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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