Surf Forecasts:
Whangamoa surf forecast from 15 Aug 2026:
- Best quality surf: Monday 17 Aug, 3AM (local time) - 1.5ft (0.4m), 16s period, NW swell with offshore winds.
- Most powerful swell: Sunday 23 Aug, 12AM (local time) - 4.5ft (1.3m), 6s period, NW swell with 104 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 3AM (local time) - 1.5ft (0.4m), 16s period with NW 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 Monday (Aug 17) at 3AM. The primary swell is predicted to be 0.4m and 16s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Whangamoa in the next 16 days are 1.3m 6s and forecast to arrive on Sunday (Aug 23) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Saturday (Aug 22) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 17th Aug) | 1.5ft (0.4m) 16s |
| Best Surf | 3AM (Mon 17th Aug) | 1.5ft (0.4m) 16s |
| Most Powerful | 12AM (Sun 23rd Aug) | 4.5ft (1.3m) 6s |
Table - best surf conditions forecast for Whangamoa over the next 16 days.
The Lowdown
Right, listen up. Rusty here. It’s been a flat, quiet spell out there, but we’ve got a bit of a pulse showing on the horizon.
The short version is, we’re looking at a long stretch of nothing much, then one afternoon that could actually have a bit of punch to it, before things back right off again. Don’t get too excited, but there is something to point the board at.
For the first week, it’s a complete write-off. From Saturday the 15th right through to Friday the 21st, there’s just no energy at all. The swell charts are showing zeros, and it’s all clean, small, and un-surfable. A couple of those mornings have that nice glassy feel, but there’s simply nothing coming in. It’s a real tease. You’d be better off polishing the wax than paddling out.
Then we get to Saturday the 22nd. Still not great, the swell bumps up to a meagre `3ft` in the afternoon, but it’s a short period `5` seconds and the wind is howling onshore from the NW at `25 km/h`. That’s a messy, blown-out shorebreak at best. Not worth the drive.
Now, here’s where it gets interesting. Hold onto your boardshorts for Sunday the 23rd. The swell is forecast to push up to `7ft` from the NNW, but the period is still short at `6-7` seconds. The combined energy is a solid `387` in the morning, building to `480` in the afternoon. The morning is a complete mess with a fresh cross-onshore wind at `35 km/h` and light rain. But the afternoon is a different story. The wind drops right out to a light breeze, and the comment even says “wind and tide favorable,” but the size is just a bit too much for this place. It’s not a spot that handles that kind of juice well. This one’s for the experts, and honestly, even then, I’d be cautious. It’s way over the head and will be closing out. This is the standout of the whole window, but it’s a raw, powerful, and slightly dangerous one.
After that, it fades fast. Monday the 24th has a drop to `3ft` from the NNW, and the morning has a clean, cross-off wind, but the energy is already down to `224`, and the overall score for the surf quality is poor. It’s a come-down from Sunday, but at least it’s rideable for someone.
Then it’s back to the flatness. From Tuesday the 25th right through to the end of the window on Sunday the 30th, it’s more of the same – tiny dribbles, glassy mornings, and no real surf. There’s a bit of swell on the charts for the 25th, but it’s `1ft` with a `7` second period, which is just nothing.
So, to sum it up: a whole lot of nothing, one wild, lumpy, and potentially heavy day on the 23rd that’s only for the brave, and then a return to the flat spell. The water temp is sitting at `55°`, which is about normal for this time of year, so it’s just the air that’s got the chill. Keep the wetsuit zipped.
Alright, stay stoked, and I’ll see you out there when the ocean decides to wake up again.
Rusty out.
Short Range ForecastModerate rain (total 12mm), heaviest on Sat night. Very mild (max 14°C on Sat afternoon, min 4°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 13°C on Tue afternoon, min 5°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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) | NW 16 | NW 16 | NW 16 | NW 15 | NW 16 | NW 15 | NW 6 | NNW 15 | NW 14 | NW 14 | NW 18 | NW 17 | NW 16 | NNW 3 | NNW 15 | NNW 4 | NW 4 | NNW 4 | NW 5 | NW 5 |
Wave Graph | ||||||||||||||||||||
0 | 0 | 0 | 0 | 0 | 0 | 1 | 21 | 0 | 0 | 0 | 0 | 0 | 1 | 21 | 1 | 0 | 1 | 6 | 0 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | off | off | off | cross-off | on | off | cross-off | cross-on | cross-off | cross-off | on | glassy | glassy | cross-on | cross-off | cross-off | cross-on | cross-off |
High Tide | 11:36PM3.47m | 11:58AM3.29m | 00:14AM3.34m | 12:36PM3.17m | 00:52AM3.15m | 1:14PM3.01m | 1:31AM2.93m | 1:55PM2.82m | 2:12AM2.69m | 2:40PM2.62m | 3:02AM2.47m | 3:36PM2.45m | ||||||||
Low Tide | 5:45AM-0.04m | 5:59PM0.08m | 6:22AM0.08m | 6:38PM0.23m | 6:59AM0.26m | 7:17PM0.43m | 7:37AM0.48m | 7:59PM0.65m | 8:20AM0.71m | 8:47PM0.88m | 9:11AM0.93m | 9:48PM1.06m | ||||||||
— | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:07 | — | — | |
5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — | |
mm | 2 | 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 12 | 9 | 10 | 5 | 8 | 9 | 5 | 10 | 13 | 8 | 12 | 12 | 9 | 11 | 11 | 9 | 12 | 14 | 9 |
Feels °C | 13 | 11 | 4 | 3 | 0 | 5 | 5 | 3 | 6 | 10 | 5 | 9 | 9 | 7 | 10 | 9 | 8 | 8 | 10 | 4 |
Swell 1 Height (m) Direction Period (s) | NW 16 | NW 16 | NW 16 | NW 15 | NW 16 | NW 15 | NW 15 | NNW 15 | NW 14 | NW 14 | NW 14 | NW 17 | NW 16 | NW 16 | NNW 15 | NW 14 | NW 4 | NNW 4 | NW 16 | NW 5 |
129 | 96 | 90 | 82 | 87 | 36 | 35 | 21 | 8 | 8 | 8 | 46 | 40 | 38 | 21 | 8 | 7 | 1 | 9 | 14 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 6 | — | — | — | — | — | — | — | NNW 3 | — | — | NW 14 | NW 16 | — | NW 14 |
— | — | — | — | — | 1 | — | — | — | — | — | — | — | 1 | — | — | 8 | 10 | — | 8 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NW 18 | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | 13 | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | S 2 | SSW 3 | SSE 3 | SSE 3 | — | NW 6 | — | — | — | — | WSW 3 | — | — | — | NNW 4 | — | SW 3 | NW 5 | WSW 2 |
— | 1 | 4 | 2 | 2 | — | 1 | — | — | — | — | 1 | — | — | — | 1 | — | 3 | 6 | 1 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 92 | 95 | 127 | 100 | 100 | 100 | 92 | 145 | 55 | 55 | 206 | 100 | 92 | 127 | 55 | 92 | 55 | 55 | 55 | 55 |
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











