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Surf Forecasts:
Mahia Spit surfForecast / Gisborne and Mahia / New Zealand
12 Day Weather and Surf, issued 5 pm Thursday 18 Sep 2025 NZST
Best Forecast Surf Conditions for Mahia Spit this week:
The most powerful waves expected at Mahia Spit in the next 12 days are 1.5m 13s and forecast to arrive on Wednesday (Sep 24) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 9s period and expected on Friday (Sep 19) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12PM (Wed 24th Sep) | 5ft (1.5m) 13s |
Table - best surf conditions forecast for Mahia Spit over the next 12 days.
Short Range Forecast Light rain (total 3mm), mostly falling on Fri morning. Very mild (max 19°C on Thu afternoon, min 8°C on Fri night). Winds decreasing (strong winds from the SSW on Thu night, light winds from the NW by Sat morning). | Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Tue night. Very mild (max 18°C on Tue morning, min 12°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||||
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||||
| 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) (?) | 4 | 5 | 6 | 14 | 9 | 9 | 3 | 5 | 3 | 6 | 6 | 5 | 6 | 6 | 11 | 10 | 10 | 14 | 13 | 13 | 13 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 3 | 4 | 4 | 8 | 0 | 0 | 10 | 17 | 7 | 72 | 58 | 30 | 40 | 46 | 59 | 78 | 128 | 704 | 771 | 663 | 451 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross- off | cross- off | cross | on | cross- on | cross- on | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | ||
High Tide / height (m) | 3:12AM 1.38 | 3:42PM 1.47 | 4:08AM 1.37 | 4:34PM 1.46 | 5:00AM 1.37 | 5:24PM 1.45 | 5:49AM 1.38 | 6:10PM 1.45 | 6:35AM 1.40 | 6:55PM 1.44 | 7:20AM 1.42 | 7:39PM 1.43 | 8:03AM 1.42 | ||||||||||
Low Tide / height (m) | 9:04PM 0.22 | 9:23AM 0.21 | 10:00PM 0.23 | 10:17AM 0.22 | 10:53PM 0.22 | 11:10AM 0.22 | 11:42PM 0.21 | 11:59AM 0.22 | 12:28AM 0.20 | 12:46PM 0.22 | 1:12AM 0.19 | 1:32PM 0.22 | 1:55AM 0.20 | ||||||||||
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||||
| Sunrise | - | - | 6:03 | - | - | 6:01 | - | - | 6:00 | - | - | 5:58 | - | - | 5:56 | - | - | 5:54 | - | - | 5:52 | ||
| Sunset | 6:00 | - | - | 6:00 | - | - | 6:01 | - | - | 6:02 | - | - | 6:04 | - | - | 6:05 | - | - | 6:06 | - | - | ||
 |  |  |  |  |  | |  | | | | | | | | |  | | |  | | |||
Rain (mm) | - | 1 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | 9 | - | 1 | - | 3 | ||
| Temp. °C | 19 | 15 | 10 | 10 | 10 | 9 | 10 | 10 | 15 | 15 | 13 | 16 | 17 | 14 | 18 | 18 | 15 | 18 | 17 | 16 | 14 | ||
| Feels °C (?) | 15 | 10 | 0 | 0 | 4 | 4 | 3 | 2 | 8 | 9 | 8 | 10 | 12 | 9 | 13 | 14 | 11 | 15 | 13 | 13 | 5 | ||
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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 Gisborne and Mahia
Recent cross-onshore wind has turned cross-shore at Blacks Reef (strong winds from the W at Mahia Automatic Weather Station 15 km from Blacks Reef). 0.6m 10s swell from the S with a 0.2m 15s groundswell from the SSE. 2 swells combining to make bigger set waves.
Actual: 58 min ago
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mahia Spit surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Mahia Spit Surf forecast
The above surf forecast table for Mahia Spit provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Mahia Spit can be found by selecting the local surf guide option on the grey menu. Our Mahia Spit 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 Spit) 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 Spit 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 Spit is 48 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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