
Surf Forecasts:
Whangamoa surf forecast from 12 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 9PM (local time) - 2.5ft (0.8m), 7s period, NNW swell with glassy winds.
- Most powerful swell: Thursday 13 Aug, 9AM (local time) - 4ft (1.2m), 8s period, N swell with 169 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 9PM (local time) - 2.5ft (0.8m), 7s period with NNW swell.
Best Forecast Surf Conditions for Whangamoa this week:
The surf forecast for Whangamoa over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 9PM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.3m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Whangamoa in the next 16 days are 1.2m 8s and forecast to arrive on Thursday (Aug 13) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 10s period and expected on Thursday (Aug 13) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 12th Aug) | 2.5ft (0.8m) 7s |
| Best Surf | 9PM (Wed 12th Aug) | 2.5ft (0.8m) 7s |
| Most Powerful | 9AM (Thu 13th Aug) | 4ft (1.2m) 8s |
Table - best surf conditions forecast for Whangamoa over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you about what’s on the table for the next couple of weeks at Whangamoa. It’s a bit of a grim stretch, to be honest. We’re looking at a long, dry spell with no real surf to speak of for most of the run. The forecast keeps showing small, weak energy and a lot of flat, glassy conditions. There’s a real gap from now through the end of the first week, with hardly a ripple worth paddling for.
The first bit of hope comes on Thursday the 13th morning, but it’s a tough sell. We’ve got a 4ft swell from the north with a short period of 8 seconds. The combined energy is moderate at 212, but it’s coming in with light rain and a cross-on wind. The waves will be there, but they’ll be messy. That afternoon sees a glassy window with 4ft from the north, period dropping to 7 seconds, and energy at 178. It’s surfable, but very ordinary. You’d be chasing weak, crumbly lines.
After that, it’s back to nothing. We get a couple of tiny pulses on the 16th (Sunday) with a 1ft, 15-second period groundswell from the NW in the afternoon. Energy is weak at 58, and it’s glassy. That long period might make it a bit too straight for the sandbar, so it’s a long shot for a few clean ankle-biters.
The next real chance doesn’t show up until the second week. On Wednesday the 26th morning, we see a 4ft NW swell, but with a short 5-second period and a cross-on wind. Combined energy is a weak 77. It’s marginal at best. That afternoon, the swell jumps to 6ft from the NNW, period 6 seconds, and energy hits 206. The problem is a 12 mph onshore wind. That’s going to turn it into a choppy, blown-out mess. Not great for a paddle.
Then Thursday the 27th is the biggest energy of the whole run, but it’s a write-off. An 8ft, 8-second period swell from the NNW with strong onshore winds. The combined energy is 711 in the morning and 867 in the afternoon. That’s a lot of power, but with the wind straight onshore, it’s going to be a washing machine. This is expert only territory, and honestly, the setup looks more interesting for a kite surfer than a paddle surfer.
The best on offer, if you’re desperate, is probably that Thursday the 13th afternoon. The glassy wind and a 4ft swell will give you some clean, small, weak waves. The water temp is 54°, which is bang on average for this time of year.
Otherwise, it’s a waiting game. Most of the options are inconsistent, and the consistent ones are ruined by the wind.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Thu morning. Very mild (max 15°C on Fri afternoon, min 10°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Sat night. Very mild (max 14°C on Sat morning, min 5°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
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) | N 7 | NNW 13 | N 8 | N 8 | N 7 | NNW 6 | NNW 16 | NW 8 | NW 19 | NW 17 | NNW 7 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NW 15 | NNW 14 | NW 14 | NW 14 | NW 14 |
Wave Graph | |||||||||||||||||||||
4 | 17 | 115 | 169 | 117 | 39 | 26 | 18 | 88 | 0 | 5 | 0 | 0 | 58 | 57 | 0 | 0 | 21 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | glassy | cross-on | glassy | glassy | off | glassy | glassy | glassy | glassy | off | off | glassy | glassy | cross-off | glassy | off | glassy | on | cross-off |
High Tide | 9:04AM3.07m | 9:27PM3.35m | 9:52AM3.22m | 10:13PM3.48m | 10:37AM3.31m | 10:55PM3.52m | 11:18AM3.34m | 11:36PM3.47m | 11:58AM3.29m | 00:14AM3.34m | 12:36PM3.17m | 00:52AM3.15m | 1:14PM3.01m | 1:31AM2.93m | |||||||
Low Tide | 3:12PM0.22m | 3:43AM0.08m | 3:58PM0.07m | 4:26AM-0.04m | 4:40PM-0.01m | 5:07AM-0.08m | 5:21PM-0.01m | 5:45AM-0.04m | 5:59PM0.08m | 6:22AM0.08m | 6:38PM0.23m | 6:59AM0.26m | 7:17PM0.43m | ||||||||
7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | |
— | 5:40 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | |
mm | — | — | 2 | 3 | 1 | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 12 | 11 | 12 | 13 | 12 | 14 | 15 | 12 | 14 | 14 | 11 | 9 | 10 | 7 | 9 | 10 | 7 | 11 | 11 | 8 |
Feels °C | 10 | 10 | 10 | 10 | 13 | 12 | 14 | 14 | 12 | 13 | 14 | 10 | 7 | 7 | 5 | 6 | 8 | 4 | 8 | 8 | 6 |
Swell 1 Height (m) Direction Period (s) | NE 5 | NNW 6 | N 8 | NNW 10 | NW 10 | NNW 6 | NW 9 | NW 8 | NW 19 | NW 17 | NW 16 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NW 15 | NNW 14 | NW 14 | NW 14 | NW 4 |
4 | 11 | 115 | 39 | 24 | 39 | 29 | 18 | 88 | 142 | 127 | 91 | 89 | 58 | 57 | 34 | 34 | 21 | 8 | 8 | 2 | |
Swell 2 Height (m) Direction Period (s) | N 7 | NNW 13 | NW 11 | NW 17 | NW 12 | NW 11 | N 5 | NW 18 | NW 8 | WNW 7 | NNW 7 | NW 7 | — | — | — | — | — | NW 4 | NW 4 | — | NW 14 |
4 | 17 | 30 | 12 | 37 | 40 | 5 | 13 | 10 | 5 | 5 | 2 | — | — | — | — | — | 1 | 1 | — | 8 | |
Swell 3 Height (m) Direction Period (s) | NW 17 | NW 16 | NW 19 | N 15 | NW 19 | NW 18 | NNW 16 | NW 15 | — | — | — | E 6 | — | — | — | — | — | — | — | — | — |
11 | 10 | 15 | 4 | 14 | 12 | 26 | 9 | — | — | — | 1 | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NE 4 | — | N 8 | N 7 | — | — | N 4 | — | — | — | ESE 3 | SE 2 | — | — | — | — | — | — | — | — |
— | 2 | — | 169 | 117 | — | — | 2 | — | — | — | 3 | 1 | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 55 | 55 | 0 | 8 | 0 | 92 | 92 | 92 | 0 | 92 | 95 | 92 | 100 | 0 | 0 | 55 | 109 | 92 | 55 | 121 | 92 |
Best forecast wave conditions in Nelson - Tasman Bay | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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











