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Surf Forecasts:
Mahia Reef surfForecast / Gisborne and Mahia / New Zealand
12 Day Weather and Surf, issued 5 pm Saturday 06 Sep 2025 NZST
Best Forecast Surf Conditions for Mahia Reef this week:
The surf forecast for Mahia Reef over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 08) at 9PM. The primary swell is predicted to be 2.0m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Mahia Reef in the next 12 days are 3.0m 14s and forecast to arrive on Monday (Sep 08) 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 1.5m 6s period and expected on Sunday (Sep 07) at 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 8th Sep) | 6.5ft (2.0m) 11s |
| Best Surf | 9PM (Mon 8th Sep) | 6.5ft (2.0m) 11s |
| Most Powerful | 6AM (Mon 8th Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Mahia Reef over the next 12 days.
Short Range Forecast Light rain (total 8mm), mostly falling on Sat night. Very mild (max 15°C on Sun afternoon, min 8°C on Sat night). Winds decreasing (fresh winds from the S on Sun afternoon, calm by Mon night). | Days 3-6 Weather Summary Heavy rain (total 25mm), heaviest during Thu morning. Very mild (max 17°C on Wed night, min 8°C on Tue night). Winds increasing (light winds from the ESE on Tue afternoon, fresh winds from the NW by Wed night). | ||||||||||||||||||||||
Sat 06 | Sunday 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | |||||||||||||||||
| 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) (?) | 12 | 15 | 6 | 10 | 8 | 13 | 12 | 11 | 10 | 10 | 12 | 11 | 11 | 10 | 10 | 9 | 11 | 6 | 7 | 13 | 12 | ||
Wave (?)Graph  | |||||||||||||||||||||||
| Energy (?) | 55 | 65 | 87 | 104 | 945 | 2815 | 1601 | 732 | 420 | 463 | 357 | 331 | 373 | 220 | 128 | 51 | 164 | 466 | 581 | 443 | 219 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | on | cross | cross | cross | cross- off | glass | cross- on | off | on | on | cross- on | cross- on | cross- off | cross- off | cross- off | cross | cross- off | on | on | ||
High Tide / height (m) | 4:10PM 1.57 | 4:35AM 1.48 | 5:03PM 1.62 | 5:28AM 1.54 | 5:56PM 1.69 | 6:21AM 1.62 | 6:48PM 1.75 | 7:14AM 1.71 | 7:39PM 1.80 | 8:06AM 1.79 | 8:31PM 1.82 | 8:56AM 1.85 | 9:25PM 1.81 | 9:48AM 1.87 | |||||||||
Low Tide / height (m) | 10:28PM 0.26 | 10:49AM 0.22 | 11:21PM 0.20 | 11:40AM 0.16 | 12:13AM 0.15 | 12:30PM 0.11 | 1:04AM 0.11 | 1:21PM 0.09 | 1:55AM 0.09 | 2:16PM 0.10 | 2:45AM 0.09 | 3:12PM 0.11 | 3:37AM 0.11 | ||||||||||
Sat 06 | Sunday 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | |||||||||||||||||
| Sunrise | - | - | 6:22 | - | - | 6:20 | - | - | 6:18 | - | - | 6:18 | - | - | 6:16 | - | - | 6:13 | - | - | 6:13 | ||
| Sunset | 5:50 | - | - | 5:51 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:53 | - | - | 5:54 | - | - | ||
 |  |  |  |  |  | | | | | | |  | |  | |  | | | | | |||
Rain (mm) | 2 | 4 | - | - | - | 2 | - | - | - | - | - | - | - | - | 9 | 6 | 9 | 1 | - | - | - | ||
| Temp. °C | 12 | 10 | 14 | 15 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 16 | 16 | 17 | 11 | 12 | 11 | 12 | 12 | 12 | 14 | ||
| Feels °C (?) | 10 | 3 | 8 | 8 | 5 | 4 | 4 | 7 | 7 | 6 | 4 | 10 | 11 | 11 | 7 | 10 | 6 | 7 | 9 | 9 | 8 | ||
- Map Icons:
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 Mahia Reef have swung cross-off (fresh winds from the S at Mahia Automatic Weather Station 9 km from Mahia Reef). 1.5m 6s windswell from the SSW with a 0.4m 12s groundswell from the SE. 2 swells combining to make bigger set waves.- Previously calm conditions have become cross-shore at Wainui Beach - Stockroute (light winds from the SSW at Gisborne Airport 9 km from Wainui Beach - Stockroute). 1.5m 5s windswell from the SSW to make surfable waves.
Actual: 52 min ago
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Information about the Mahia Reef Surf forecast
The above surf forecast table for Mahia Reef provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Mahia Reef can be found by selecting the local surf guide option on the grey menu. Our Mahia 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 (Mahia 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 Mahia 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.
Mahia Reef is 49 km (30 miles) from the city of Gisborne. If you plan a holiday in Gisborne and Mahia, look for hotels and other accommodation in Gisborne. Gisborne has rooms for a wide range of budgets as well as car hire and transport links.
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