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Stewart Island - Saber Reef Surf Forecast
/ Southland (9 surf breaks) /
Surf Forecasts:
Stewart Island - Saber Reef surfForecast / Southland / New Zealand
12 Day Weather and Surf, issued 11 pm Monday 15 Sep 2025 NZST
Best Forecast Surf Conditions for Stewart Island - Saber Reef this week:
The surf forecast for Stewart Island - Saber Reef over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 20) at 9AM. The primary swell is predicted to be 1.2m and 11s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Stewart Island - Saber Reef in the next 12 days are 3.0m 12s and forecast to arrive on Friday (Sep 19) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 6.5m 14s period and expected on Sunday (Sep 21) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sat 20th Sep) | 4ft (1.2m) 11s |
| Best Surf | 9AM (Sat 20th Sep) | 4ft (1.2m) 11s |
| Most Powerful | 3AM (Fri 19th Sep) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Stewart Island - Saber Reef over the next 12 days.
Short Range Forecast Heavy rain (total 24mm), heaviest during Tue night. Very mild (max 14°C on Tue afternoon, min 6°C on Thu morning). Winds increasing (fresh winds from the WNW on Tue morning, gales from the NW by Tue night). | Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Fri night. Very mild (max 16°C on Sat afternoon, min 7°C on Thu night). Mainly near gales. | |||||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Mon 22 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 13 | 18 | 12 | 9 | 9 | 9 | 9 | 13 | 11 | 10 | 12 | 13 | 13 | 11 | 10 | 7 | 9 | 8 | 9 | 8 | 8 | |
Wave (?)Graph  | ||||||||||||||||||||||
| Energy (?) | 0 | 60 | 11 | 93 | 65 | 55 | 36 | 73 | 43 | 1378 | 2314 | 1893 | 835 | 356 | 209 | 164 | 122 | 90 | 50 | 13 | 28 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross- off | cross- off | cross | cross | cross- off | cross- on | cross- on | cross- on | cross- off | cross- off | cross | off | off | cross- off | cross- off | cross- off | cross- off | cross | cross | |
High Tide / height (m) | 8:31AM 1.99 | 8:54PM 1.97 | 9:42AM 2.04 | 10:00PM 2.04 | 10:39AM 2.11 | 10:54PM 2.12 | 11:27AM 2.17 | 11:40PM 2.19 | 12:08PM 2.20 | 12:20AM 2.23 | 12:45PM 2.22 | 12:57AM 2.24 | 1:19PM 2.21 | |||||||||
Low Tide / height (m) | 2:02AM 0.45 | 2:41PM 0.58 | 3:13AM 0.39 | 3:46PM 0.51 | 4:12AM 0.31 | 4:39PM 0.41 | 5:02AM 0.23 | 5:25PM 0.32 | 5:46AM 0.16 | 6:05PM 0.26 | 6:25AM 0.13 | 6:43PM 0.22 | 7:02AM 0.14 | |||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Mon 22 | ||||||||||||||||
| Sunrise | - | 6:50 | - | - | 6:48 | - | - | 6:47 | - | - | 6:45 | - | - | 6:43 | - | - | 6:41 | - | - | 6:39 | - | |
| Sunset | - | - | 6:37 | - | - | 6:37 | - | - | 6:38 | - | - | 6:40 | - | - | 6:42 | - | - | 6:43 | - | - | 6:45 | |
 |  |  |  |  | |  | | |  | | | |  | | |  | | | | | ||
Rain (mm) | 1 | 2 | - | 8 | 4 | 2 | 4 | 2 | 1 | - | - | - | 4 | - | - | 2 | - | - | 8 | 1 | - | |
| Temp. °C | 10 | 12 | 14 | 14 | 12 | 11 | 10 | 8 | 7 | 8 | 9 | 11 | 10 | 13 | 16 | 13 | 11 | 12 | 11 | 10 | 10 | |
| Feels °C (?) | 1 | 5 | 6 | 5 | 5 | 2 | 0 | -2 | -4 | 1 | 1 | 4 | -1 | 7 | 10 | 5 | 5 | 7 | 8 | 4 | 3 | |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Southland
Still cross-shore at Stewart Island - Saber Reef (strong winds from the W at South West Cape Automatic Weather Station 27 km from Stewart Island - Saber Reef). No surfable waves
27 km away, 1 h 36 min ago
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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 12 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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