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Wainui Beach - Whales Surf Forecast
/ Gisborne and Mahia (37 surf breaks) /
Surf Forecasts:
Wainui Beach - Whales surfForecast / Gisborne and Mahia / New Zealand
12 Day Weather and Surf, issued 5 pm Wednesday 17 Sep 2025 NZST
Best Forecast Surf Conditions for Wainui Beach - Whales this week:
The surf forecast for Wainui Beach - Whales over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 3AM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.1m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Wainui Beach - Whales in the next 12 days are 2.2m 10s and forecast to arrive on Saturday (Sep 20) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Thursday (Sep 25) at 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 18th Sep) | 1.5ft (0.4m) 10s |
| Best Surf | 3AM (Sat 20th Sep) | 7ft (2.2m) 10s |
| Most Powerful | 12AM (Sat 20th Sep) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Wainui Beach - Whales over the next 12 days.
Short Range Forecast Light rain (total 7mm), mostly falling on Fri morning. Very mild (max 19°C on Wed afternoon, min 7°C on Fri night). Winds decreasing (fresh winds from the NW on Thu morning, light winds from the WSW by Sat morning). | Days 3-6 Weather Summary Mostly dry. Very mild (max 18°C on Mon afternoon, min 7°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 15 | 7 | 8 | 10 | 10 | 10 | 13 | 12 | 11 | 10 | 9 | 9 | 10 | 9 | 9 | 13 | 12 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 50 | 49 | 27 | 20 | 21 | 397 | 514 | 1009 | 290 | 220 | 249 | 90 | 81 | 28 | 16 | 25 | 106 | 69 | 62 | 173 | 347 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | off | off | cross- off | cross- on | cross- on | cross- on | cross | cross- on | off | off | cross- off | off | off | cross- off | off | cross- off | cross- off | cross- off | cross- off | ||
High Tide / height (m) | 2:10AM 1.72 | 2:48PM 1.81 | 3:37AM 1.72 | 4:10PM 1.82 | 4:45AM 1.77 | 5:10PM 1.87 | 5:35AM 1.83 | 5:55PM 1.92 | 6:17AM 1.88 | 6:33PM 1.94 | 6:56AM 1.91 | 7:08PM 1.93 | 7:33AM 1.91 | ||||||||||
Low Tide / height (m) | 8:03PM 0.72 | 8:27AM 0.65 | 9:15PM 0.72 | 9:43AM 0.65 | 10:25PM 0.69 | 10:49AM 0.60 | 11:21PM 0.63 | 11:38AM 0.56 | 12:07AM 0.57 | 12:20PM 0.52 | 12:47AM 0.53 | 12:59PM 0.51 | 1:24AM 0.50 | ||||||||||
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||
| Sunrise | - | - | 6:03 | - | - | 6:01 | - | - | 6:01 | - | - | 5:58 | - | - | 5:56 | - | - | 5:56 | - | - | 5:54 | ||
| Sunset | 5:59 | - | - | 6:00 | - | - | 6:00 | - | - | 6:00 | - | - | 6:01 | - | - | 6:02 | - | - | 6:04 | - | - | ||
 |  |  | | |  |  | |  | | | | | | | | | | |  | | |||
Rain (mm) | - | - | - | - | - | 6 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | ||
| Temp. °C | 19 | 15 | 17 | 18 | 15 | 10 | 9 | 9 | 10 | 10 | 9 | 14 | 16 | 10 | 16 | 18 | 12 | 17 | 16 | 14 | 17 | ||
| Feels °C (?) | 15 | 10 | 12 | 15 | 13 | 3 | 2 | 2 | 6 | 7 | 5 | 9 | 12 | 6 | 12 | 14 | 9 | 12 | 12 | 12 | 14 | ||
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Break
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 Gisborne and Mahia
Cross-shore wind at Blacks Reef have swung cross-off (moderate winds from the NW at Mahia Automatic Weather Station 15 km from Blacks Reef). 0.7m 10s swell from the S with a 0.4m 10s swell from the SSE and a 0.3m 15s groundswell from the S. 3 swells combining to make bigger set waves.
Actual: 58 min ago
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Information about the Wainui Beach - Whales Surf forecast
The above surf forecast table for Wainui Beach - Whales provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Wainui Beach - Whales can be found by selecting the local surf guide option on the grey menu. Our Wainui Beach - Whales 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 (Wainui Beach - Whales) 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 Wainui Beach - Whales 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.
Are you planning a holiday in Gisborne and Mahia? If you are looking for accommodation near Wainui Beach - Whales, camping, hotels and holiday cottages in Gisborne and Mahia, consider staying in Gisborne which is 10 km (6 miles) away.
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