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Happy Jacks surfForecast / Gisborne and Mahia / New Zealand
12 Day Weather and Surf, issued 11 pm Wednesday 20 Aug 2025 NZST
Best Forecast Surf Conditions for Happy Jacks this week:
The surf forecast for Happy Jacks over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 23) at 12AM. The primary swell is predicted to be 1.7m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Happy Jacks in the next 12 days are 3.0m 9s and forecast to arrive on Thursday (Aug 21) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 17s period and expected on Thursday (Aug 21) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sat 23rd Aug) | 5.5ft (1.7m) 12s |
| Best Surf | 12AM (Sat 23rd Aug) | 5.5ft (1.7m) 12s |
| Most Powerful | 6AM (Thu 21st Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Happy Jacks over the next 12 days.
Short Range Forecast Moderate rain (total 17mm), heaviest on Fri afternoon. Very mild (max 11°C on Wed night, min 7°C on Fri night). Winds decreasing (strong winds from the SSW on Wed night, light winds from the ENE by Sat afternoon). | Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Tue morning, min 8°C on Sat night). Wind will be generally light. | |||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | Wed 27 | ||||||||||||||||
| 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) (?) | 9 | 9 | 9 | 16 | 14 | 13 | 12 | 10 | 14 | 17 | 9 | 12 | 11 | 10 | 7 | 7 | 7 | 7 | 8 | 8 | 10 | |
Wave (?)Graph  | ||||||||||||||||||||||
| Energy (?) | 1800 | 1235 | 1000 | 1231 | 1088 | 1330 | 784 | 553 | 654 | 416 | 138 | 193 | 187 | 126 | 207 | 148 | 224 | 144 | 177 | 194 | 349 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off | off | cross- on | cross- off | cross | cross- on | cross | glass | cross- on | cross | cross | cross- on | cross- off | cross | cross- on | |
High Tide / height (m) | 3:23AM 1.62 | 3:50PM 1.74 | 4:18AM 1.60 | 4:44PM 1.72 | 5:12AM 1.58 | 5:37PM 1.71 | 6:04AM 1.57 | 6:26PM 1.69 | 6:55AM 1.59 | 7:13PM 1.68 | 7:43AM 1.61 | 7:58PM 1.66 | 8:27AM 1.64 | |||||||||
Low Tide / height (m) | 9:16PM 0.24 | 9:36AM 0.23 | 10:12PM 0.23 | 10:32AM 0.21 | 11:06PM 0.23 | 11:24AM 0.20 | 11:58PM 0.23 | 12:12PM 0.20 | 12:47AM 0.24 | 12:58PM 0.23 | 1:33AM 0.26 | 1:45PM 0.27 | 2:17AM 0.29 | 2:33PM 0.32 | ||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | Wed 27 | ||||||||||||||||
| Sunrise | - | 6:47 | - | - | 6:46 | - | - | 6:45 | - | - | 6:43 | - | - | 6:41 | - | - | 6:39 | - | - | 6:39 | - | |
| Sunset | - | - | 5:36 | - | - | 5:36 | - | - | 5:37 | - | - | 5:37 | - | - | 5:38 | - | - | 5:39 | - | - | 5:40 | |
 |  |  | | | |  |  | |  | | |  | | | | | | | | | ||
Rain (mm) | 4 | 1 | 1 | 4 | 2 | 3 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
| Temp. °C | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 9 | 12 | 12 | 11 | 13 | 14 | 12 | 15 | 14 | 14 | 16 | 16 | |
| Feels °C (?) | 3 | 3 | 3 | 4 | 5 | 4 | 6 | 7 | 7 | 6 | 9 | 8 | 8 | 11 | 10 | 8 | 12 | 10 | 11 | 13 | 11 | |
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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
The wind is still cross-off at Happy Jacks (strong winds from the SSW at Mahia Automatic Weather Station 13 km from Happy Jacks). 3.5m 9s swell from the S with a 1.6m 8s swell from the ESE. 2 swells combining so expect closeout sets.
Actual: 56 min ago
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Happy Jacks 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 Happy Jacks Surf forecast
The above surf forecast table for Happy Jacks provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Happy Jacks can be found by selecting the local surf guide option on the grey menu. Our Happy Jacks 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 (Happy Jacks) 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 Happy Jacks 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.
Happy Jacks is 39 km (24 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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