Surf Forecasts:
Whangamoa surf forecast from 21 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 6AM (local time) - 11ft (3.5m), 8s period, NNW swell with 1,490 kJ wave energy.
Best Forecast Surf Conditions for Whangamoa this week:
The most powerful waves expected at Whangamoa in the next 16 days are 3.5m 8s and forecast to arrive on Sunday (Aug 23) at 6AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Friday (Aug 28) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Sun 23rd Aug) | 11ft (3.5m) 8s |
Table - best surf conditions forecast for Whangamoa over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the cards for the next couple of weeks.
To be brutally honest, it's a pretty grim run for Whangamoa. We’re looking at a long stretch of days with nothing worthwhile on offer. The first few days are a write-off, with poor surf conditions and not enough energy to get excited about. You’ll be waiting a while.
The first real glimmer of hope doesn't show up until Saturday, the 29th of August. The morning is where it's at. We’ve got a solid 10ft swell rolling in from the NNW, but here’s the catch – it’s predicted to be too big for this break. For a sandbar that's inconsistent, that’s a whole lot of water moving around. The combined energy is a massive 1087, which is seriously strong. The wind is looking light and cross-shore from the WSW at 3 mph, which is a big positive, meaning it could be glassy and clean. But honestly, this is one for the experts only. The swell size is over 8ft, so it’s not beginner territory. This is the standout window, but it comes with a big caveat.
After that pulse, it drops right back down. The rest of the 16-day window is a mix of tiny, weak swells and poor winds. There’s a run of days with zero surf energy, and even when there is a little bump, the wind is usually on it or cross-onshore, making it a mess. The water temperature is sitting at 55°F, which is about average for the time of year, so no surprises there.
It’s a tough outlook. The only real window is Saturday morning, and even that might be too gnarly. For everything else, you’re better off waiting for the forecasts to change. Keep your eyes peeled.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat night. Very mild (max 14°C on Sat afternoon, min 6°C on Fri night). Winds increasing (calm on Fri afternoon, near gales from the NW by Sat night). | Days 5-7 Weather SummarySome drizzle, heaviest during Thu morning. Very mild (max 15°C on Tue morning, min 10°C on Mon night). Winds decreasing (fresh winds from the WSW on Tue morning, light winds from the W by Wed morning). | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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) | NNW 4 | NW 5 | NW 5 | NW 6 | NNW 7 | NNW 9 | NW 9 | NW 13 | NNW 8 | NW 15 | NW 15 | NW 15 | NW 6 | NW 6 | NW 6 | NW 15 | NW 14 | NW 5 | NW 6 | NW 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1 | 0 | 38 | 122 | 530 | 992 | 626 | 180 | 80 | 0 | 0 | 59 | 43 | 59 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross | on | on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | on | on |
High Tide | 4:06AM2.31m | 4:49PM2.35m | 5:26AM2.25m | 6:10PM2.37m | 6:44AM2.32m | 7:17PM2.51m | 7:44AM2.48m | 8:08PM2.70m | 8:31AM2.67m | 8:50PM2.91m | 9:10AM2.86m | 9:26PM3.09m | ||||||||
Low Tide | 9:48PM1.06m | 10:19AM1.08m | 11:11PM1.15m | 11:44AM1.11m | 00:35AM1.08m | 12:59PM1.00m | 1:38AM0.91m | 1:55PM0.81m | 2:25AM0.70m | 2:39PM0.60m | 3:05AM0.48m | 3:17PM0.41m | ||||||||
 |  | | |  |  | | | | |  | | | |  |  | | | |  | |
 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — |
 | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — |
mm | — | — | — | — | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 4 |
Temp °C | 11 | 8 | 12 | 14 | 13 | 12 | 11 | 10 | 12 | 13 | 12 | 15 | 15 | 11 | 14 | 14 | 13 | 14 | 13 | 13 |
Feels °C | 9 | 5 | 8 | 8 | 7 | 6 | 3 | 4 | 7 | 8 | 6 | 7 | 7 | 5 | 12 | 11 | 8 | 10 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | NW 16 | NW 5 | NW 14 | — | — | NW 17 | NW 9 | NW 8 | NW 15 | NW 7 | NW 7 | NW 6 | NW 15 | NNW 14 | NW 6 | NW 6 | NW 5 | NW 5 | NW 6 | NW 6 |
| kJ | 10 | 25 | 8 | — | — | 12 | 626 | 232 | 340 | 43 | 35 | 36 | 35 | 20 | 40 | 32 | 17 | 23 | 47 | 44 |
Swell 2 Height (m) Direction Period (s) | — | NW 14 | — | — | — | — | NW 18 | NW 13 | NNW 8 | NW 15 | NW 15 | NW 15 | — | — | NW 15 | NW 15 | NW 14 | NW 13 | NW 16 | NW 16 |
| kJ | — | 8 | — | — | — | — | 13 | 180 | 80 | 178 | 112 | 59 | — | — | 34 | 33 | 30 | 7 | 10 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 17 | NW 12 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 11 | 6 | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | SW 2 | NW 5 | NW 6 | NNW 7 | NNW 9 | — | — | WSW 3 | — | WSW 3 | SW 3 | NW 6 | NW 6 | SW 3 | — | — | — | — | — |
| kJ | 1 | 1 | 38 | 122 | 530 | 992 | — | — | 3 | — | 10 | 3 | 43 | 59 | 7 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 55 | 55 | 55 | 28 | 127 | 29 | 330 | 136 | 8 | 55 | 99 | 99 | 99 | 99 | 55 | 55 | 55 | 55 | 55 | 55 |
Best forecast wave conditions in Nelson - Tasman Bay | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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 Whangamoa 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 Whangamoa Surf forecast
The above surf forecast table for Whangamoa provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Whangamoa can be found by selecting the local surf guide option on the grey menu. Our Whangamoa 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 (Whangamoa) 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 Whangamoa 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 Nelson - Tasman Bay? If you are looking for accommodation near Whangamoa, camping, hotels and holiday cottages in Nelson - Tasman Bay, consider staying in Nelson which is 29 km (18 miles) away. Alternatively, find information about places to stay and car hire in Blenheim which is 58 km (36 miles) away
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