Surf Forecasts:
Stewart Island - Saber Reef surf forecast from 17 Jul 2026:
- Best quality surf: Saturday 18 Jul, 6AM (local time) - 23ft (7.0m), 18s period, SW swell with cross-shore winds.
- Most powerful swell: Saturday 18 Jul, 6AM (local time) - 23ft (7.0m), 18s period, SW swell with 28,559 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 6AM (local time) - 23ft (7.0m), 18s 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 Saturday (Jul 18) at 6AM. The primary swell is predicted to be 7.0m and 18s period with a secondary swell of 1.0m and 15s. 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 7.0m 18s and forecast to arrive on Saturday (Jul 18) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 6.0m 17s period and expected on Saturday (Jul 18) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sat 18th Jul) | 23ft (7.0m) 18s |
| Best Surf | 6AM (Sat 18th Jul) | 23ft (7.0m) 18s |
| Most Powerful | 6AM (Sat 18th Jul) | 23ft (7.0m) 18s |
Table - best surf conditions forecast for Stewart Island - Saber Reef over the next 16 days.
Short Range ForecastHeavy rain (total 21mm), heaviest during Sat afternoon. Very mild (max 12°C on Fri night, min 8°C on Sat night). Winds decreasing (near gales from the WNW on Fri night, light winds from the W by Sun night). | Days 5-7 Weather SummaryHeavy rain (total 26mm), heaviest during Thu afternoon. Very mild (max 11°C on Tue morning, min 7°C on Thu afternoon). Winds decreasing (near gales from the NW on Tue morning, light winds from the NNE by Wed night). | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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 19 | SW 18 | ESE 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 16 | SW 14 | SW 13 | SW 12 | ESE 12 | S 10 | SE 11 | SE 11 | SE 11 | SSE 12 | SE 12 | SE 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 39013 | 25088 | 585 | 8902 | 6554 | 8033 | 8233 | 8112 | 4904 | 1975 | 954 | 13 | 16 | 5 | 5 | 5 | 14 | 22 | 19 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross | cross-on | cross | cross | off | cross-off | cross | cross-on |
High Tide | 3:40AM2.37m | 4:13PM2.29m | 4:31AM2.26m | 5:02PM2.17m | 5:23AM2.12m | 5:52PM2.04m | 6:17AM1.99m | 6:45PM1.93m | 7:15AM1.88m | 7:41PM1.85m | 8:18AM1.82m | 8:41PM1.80m | |||||||
Low Tide | 9:26PM0.14m | 9:52AM0.02m | 10:16PM0.21m | 10:43AM0.16m | 11:09PM0.31m | 11:36AM0.32m | 00:04AM0.43m | 12:32PM0.48m | 1:01AM0.53m | 1:31PM0.61m | 2:02AM0.60m | 2:31PM0.69m | |||||||
 |  |  |  |  |  |  | | | | |  | | | | | |  | | |
 | — | 8:26 | — | — | 8:26 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:22 | — | — |
 | — | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:24 | — | — | 5:27 | — | — | 5:28 | — |
mm | 2 | 5 | 8 | 6 | — | — | — | — | — | — | 2 | 4 | 2 | — | 1 | 1 | 4 | 12 | 4 |
Temp °C | 12 | 11 | 11 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 8 |
Feels °C | 1 | 2 | 2 | 3 | 2 | 3 | 4 | 5 | 4 | 2 | 1 | 2 | 4 | 4 | 4 | 4 | 3 | 5 | 2 |
Swell 1 Height (m) Direction Period (s) | SW 19 | SW 18 | ESE 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 16 | SW 14 | SW 13 | SW 12 | ESE 12 | S 10 | WSW 12 | WSW 12 | WSW 12 | S 8 | SE 12 | WSW 12 |
| kJ | 39013 | 25088 | 394 | 8902 | 6554 | 8033 | 8233 | 8112 | 4904 | 1975 | 954 | 13 | 16 | 2213 | 2094 | 1590 | 5 | 22 | 4112 |
Swell 2 Height (m) Direction Period (s) | ESE 16 | ESE 15 | ESE 14 | ESE 14 | WSW 15 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | S 12 | S 11 | — | ESE 12 | SE 11 | SE 11 | SE 11 | SSE 12 | ENE 5 | SE 11 |
| kJ | 481 | 434 | 585 | 352 | 911 | 195 | 131 | 85 | 57 | 224 | 58 | — | 13 | 5 | 5 | 5 | 14 | 2 | 19 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | ESE 14 | — | ESE 13 | — | — | ESE 12 | ESE 12 | — | — | — | — | SE 11 | NE 4 | E 12 | — |
| kJ | — | — | — | — | 207 | — | 147 | — | — | 28 | 27 | — | — | — | — | 5 | 1 | 3 | — |
Wind waves Height (m) Direction Period (s) | — | — | WSW 16 | — | — | — | — | — | — | WNW 6 | WNW 8 | W 10 | WSW 12 | — | — | — | WNW 10 | W 10 | — |
| kJ | — | — | 16691 | — | — | — | — | — | — | 159 | 1525 | 3166 | 2599 | — | — | — | 1585 | 1727 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 224 | 221 | 166 | 90 | 145 | 145 | 89 | 89 | 89 | 89 | 89 | 92 | 92 | 92 | 89 | 89 | 92 | 89 | 174 |
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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