Surf Forecasts:
Mahia Reef surf forecast from 18 Sep 2026:
- Best quality surf: Monday 21 Sep, 12PM (local time) - 10ft (3.0m), 13s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 6AM (local time) - 15ft (4.5m), 13s period, S swell with 6,660 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 3PM (local time) - 3.5ft (1.0m), 12s period with SE swell.
Best Forecast Surf Conditions for Mahia Reef this week:
The surf forecast for Mahia Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 18) at 3PM. The primary swell is predicted to be 1.0m and 12s period with a secondary swell of 0.3m and 16s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Mahia Reef in the next 16 days are 4.5m 13s and forecast to arrive on Monday (Sep 21) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 5s period and expected on Tuesday (Sep 22) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 18th Sep) | 3.5ft (1.0m) 12s |
| Best Surf | 12PM (Mon 21st Sep) | 10ft (3.0m) 13s |
| Most Powerful | 6AM (Mon 21st Sep) | 15ft (4.5m) 13s |
Table - best surf conditions forecast for Mahia Reef over the next 16 days.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun morning. Very mild (max 16°C on Sat afternoon, min 8°C on Sun night). Winds increasing (calm on Sat afternoon, near gales from the SW by Sun morning). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Wed afternoon. Very mild (max 17°C on Tue afternoon, min 7°C on Wed night). Winds increasing (light winds from the NNW on Tue morning, fresh winds from the S by Wed afternoon). | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||
AM | PM | 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) | SE 12 | SE 12 | SE 12 | S 19 | S 16 | S 14 | SW 5 | SSW 9 | S 11 | S 14 | S 12 | S 10 | S 10 | S 9 | S 6 | S 8 | S 18 | S 8 | S 9 | S 9 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 324 | 254 | 224 | 721 | 868 | 411 | 167 | 1408 | 4024 | 4410 | 2008 | 738 | 354 | 169 | 402 | 417 | 314 | 1067 | 1412 | 1552 | 1075 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-on | cross-on | glassy | on | cross-on | cross | cross | cross-on | cross-off | on | cross-on | cross-off | cross | cross-on | cross | cross | cross-on | cross | cross |
High Tide | 10:45AM1.66m | 11:11PM1.59m | 11:34AM1.60m | 11:55PM1.52m | 12:25PM1.54m | 00:41AM1.44m | 1:14PM1.49m | 1:29AM1.38m | 2:00PM1.46m | 2:18AM1.35m | 2:46PM1.45m | 3:08AM1.35m | 3:33PM1.46m | ||||||||
Low Tide | 5:05PM0.42m | 5:24AM0.45m | 5:53PM0.44m | 6:09AM0.46m | 6:41PM0.45m | 6:53AM0.45m | 7:29PM0.44m | 7:39AM0.44m | 8:15PM0.41m | 8:29AM0.42m | 9:01PM0.38m | 9:20AM0.39m | 9:48PM0.34m | ||||||||
 |  |  | | |  |  |  |  | | | |  | | | | |  | | | | |
 | 6:05 | — | — | 6:03 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — |
 | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — | — | 6:05 | — | — | 6:06 | — |
mm | — | — | — | — | — | — | 2 | 1 | 1 | — | — | — | — | — | 3 | — | 3 | 3 | 2 | 2 | 5 |
Temp °C | 14 | 15 | 13 | 15 | 16 | 15 | 11 | 12 | 10 | 12 | 12 | 11 | 16 | 17 | 12 | 12 | 10 | 10 | 9 | 10 | 10 |
Feels °C | 12 | 14 | 12 | 13 | 11 | 11 | 2 | 4 | 0 | 9 | 8 | 7 | 13 | 14 | 8 | 7 | 2 | 1 | -1 | 1 | 2 |
Swell 1 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | S 19 | S 16 | S 14 | SE 11 | ESE 10 | SE 10 | S 14 | S 12 | S 10 | S 10 | S 9 | SE 12 | S 8 | S 8 | SE 9 | ESE 16 | ESE 16 | SE 14 |
| kJ | 324 | 254 | 224 | 721 | 868 | 411 | 75 | 60 | 17 | 4410 | 2008 | 738 | 354 | 169 | 23 | 417 | 235 | 23 | 25 | 24 | 51 |
Swell 2 Height (m) Direction Period (s) | NE 6 | SSW 16 | NE 5 | SE 12 | SE 11 | SE 11 | ENE 7 | ESE 11 | ENE 10 | ESE 10 | ESE 10 | SE 14 | SE 13 | SSW 12 | ESE 10 | S 16 | S 18 | E 17 | ESE 16 | ESE 16 | S 18 |
| kJ | 8 | 53 | 13 | 187 | 171 | 119 | 21 | 44 | 9 | 20 | 20 | 7 | 7 | 50 | 10 | 135 | 314 | 6 | 25 | 24 | 24 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SSW 7 | SSW 16 | NE 7 | ENE 7 | ENE 8 | E 11 | — | — | — | SE 14 | SE 13 | ESE 13 | SSE 12 | ESE 12 | SE 11 | SE 11 | E 17 | E 16 | — | — |
| kJ | 21 | 5 | 87 | 23 | 31 | 32 | 2 | — | — | — | 8 | 7 | 16 | 15 | 14 | 20 | 18 | 6 | 20 | — | — |
Wind waves Height (m) Direction Period (s) | NNE 6 | NE 6 | — | SW 4 | — | WNW 3 | SW 5 | SSW 9 | S 11 | — | — | NNE 4 | NW 3 | — | S 6 | — | — | S 8 | S 9 | S 9 | S 9 |
| kJ | 17 | 9 | — | 9 | — | 6 | 167 | 1408 | 4024 | — | — | 7 | 2 | — | 402 | — | — | 1067 | 1412 | 1552 | 1075 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 0 | 4 | 4 | 0 | 34 | 359 | 84 | 80 | 4 | 2 | 4 | 2 | 0 | 111 | 4 | 103 | 93 | 114 | 171 | 68 |
Best forecast wave conditions in Gisborne and Mahia | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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 16 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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