Surf Forecasts:
Tawharanui surf forecast from 18 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 6AM (local time) - 4ft (1.2m), 5s period, NNW swell with 64 kJ wave energy.
Best Forecast Surf Conditions for Tawharanui this week:
The most powerful waves expected at Tawharanui in the next 16 days are 1.2m 5s and forecast to arrive on Sunday (Aug 23) 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 1.5m 5s period and expected on Wednesday (Aug 19) at 9AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Sun 23rd Aug) | 4ft (1.2m) 5s |
Table - best surf conditions forecast for Tawharanui over the next 16 days.
The Lowdown
Alright, look, I’m not gonna sugarcoat it. The next week and a half is looking pretty darn bleak for Tawharanui. We’ve got a run of small, weak surf that’s just not gonna get the heart rate up. It’s mostly flat dribble, and the wind, while often offshore or cross-off, is just working with nothing. We’re talking chest-high at the very best, and more often than not, it’s knee-slappers. The swell energy is weak too, with values mostly in the single digits and teens, like 8, 9, 15, and 26. Water temp is sitting at 58°F, which is about average for this time of year, so no surprises there.
From the 18th through to the 26th of August, there is just nothing on the cards. The swell direction is all over the place, but the size is the real killer – we're looking at 0.3ft to 1ft. There's a better period on the 23rd with a pulse of NW windswell pushing 3ft, but the period is a short 6 seconds and it's a cross-off breeze. It’s still poor surf conditions. This is a long flat spell, folks.
Now, things get interesting later on. The 27th and 28th of August see a solid increase in size, with 6ft to 6ft of north swell rolling in. But, and it’s a big but, the wind is cross-onshore and choppy, coming from the north at 12-15 mph. The energy jumps to 193 and 298, but it's a messy, wind-blown 6ft to 6ft. That’s not the clean stuff we want. It’s more interesting for the kite crew than us paddle surfers, to be honest.
The real standout of this whole period, the one you should circle on the calendar, is Sunday the 30th of August. We’ve got a proper NW groundswell filling in at a solid 5ft to 6ft with a 7-8 second period. The energy is strong, reading 304 and 315. But the best part is the wind: glassy, complete calm in the morning and a light SE breeze in the afternoon. This is the one. The forecast says "expect good surf conditions," and for a beach and reef set-up like Tawharanui, that's as good as it gets. It’ll be a bit of a novelty after this long flat spell. The swell direction is NW, which is cross to the usual NE optimum, but the clean conditions will make it worth it.
The 29th also has some size, but it's marred by heavy rain and a fresh cross-off breeze. The 31st sees it all drop right back off again into the 1ft to 2ft range as that swell fades.
So, there you have it. A whole lot of nothing for the next week and a half, then one clean, glassy day on the 30th that could be a lot of fun. It’s a long way out, so don’t book the time off just yet, but it’s definitely the one to keep an eye on.
Rusty
Short Range ForecastMostly dry. Very mild (max 13°C on Tue afternoon, min 9°C on Tue night). Winds decreasing (fresh winds from the S on Wed morning, calm by Fri morning). | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Sun afternoon, min 11°C on Sat morning). Winds decreasing (fresh winds from the W on Sun morning, calm by Mon morning). | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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) | E 9 | E 9 | E 9 | ESE 7 | E 10 | ESE 9 | ESE 9 | E 9 | E 10 | E 9 | E 10 | E 9 | NE 14 | NW 4 | NNW 6 | N 6 | NNW 7 | E 12 | E 12 | NE 10 |
Wave Graph | ||||||||||||||||||||
24 | 6 | 6 | 5 | 2 | 15 | 26 | 13 | 17 | 15 | 8 | 7 | 8 | 15 | 40 | 18 | 9 | 5 | 5 | 4 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | off |
High Tide | 11:18PM2.56m | 11:48AM2.47m | 00:02AM2.44m | 12:32PM2.36m | 00:47AM2.32m | 1:20PM2.25m | 1:35AM2.21m | 2:15PM2.16m | 2:28AM2.13m | 3:21PM2.13m | 3:28AM2.09m | 4:24PM2.16m | ||||||||
Low Tide | 5:14PM0.61m | 5:42AM0.59m | 6:02PM0.73m | 6:26AM0.70m | 6:53PM0.84m | 7:13AM0.81m | 7:47PM0.93m | 8:03AM0.90m | 8:42PM0.99m | 8:56AM0.96m | 9:38PM1.03m | 9:53AM0.98m | 10:35PM1.03m | |||||||
— | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | |
5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 11 | 10 | 11 | 10 | 11 | 13 | 11 | 13 | 14 | 13 | 14 | 15 | 13 | 15 | 16 | 13 | 14 | 16 | 13 |
Feels °C | 7 | 5 | 3 | 6 | 7 | 8 | 10 | 8 | 11 | 11 | 10 | 10 | 11 | 9 | 10 | 12 | 11 | 13 | 15 | 11 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | ESE 7 | — | ESE 9 | ESE 9 | E 9 | E 10 | E 9 | E 10 | E 9 | E 9 | NE 14 | NNW 6 | N 6 | NNW 7 | N 5 | N 5 | — |
24 | 6 | 6 | 5 | — | 15 | 26 | 13 | 17 | 15 | 8 | 7 | 2 | 8 | 40 | 18 | 9 | 2 | 2 | — | |
Swell 2 Height (m) Direction Period (s) | NE 10 | E 6 | N 10 | SE 5 | E 10 | — | — | — | — | E 13 | — | N 16 | NE 14 | E 8 | NE 13 | NE 13 | NE 11 | NE 11 | NE 11 | NE 10 |
4 | 1 | 2 | 1 | 2 | — | — | — | — | 3 | — | 5 | 8 | 1 | 6 | 7 | 4 | 5 | 5 | 4 | |
Swell 3 Height (m) Direction Period (s) | — | N 10 | — | E 12 | E 6 | — | — | E 10 | — | — | — | — | — | E 13 | E 12 | E 13 | NW 4 | E 12 | E 12 | — |
— | 2 | — | 3 | 1 | — | — | 8 | — | — | — | — | — | 4 | 3 | 3 | 1 | 3 | 3 | — | |
Wind waves Height (m) Direction Period (s) | S 3 | SSW 4 | S 5 | S 4 | — | — | — | SSW 2 | — | — | — | NW 3 | NW 3 | NW 4 | WNW 4 | W 4 | W 3 | WSW 3 | WSW 2 | — |
6 | 22 | 115 | 9 | — | — | — | 1 | — | — | — | 2 | 2 | 15 | 22 | 9 | 5 | 4 | 1 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 44 | 107 | 216 | 44 | 22 | 22 | 28 | 60 | 22 | 59 | 22 | 66 | 359 | 359 | 105 | 117 | 264 | 64 | 202 | 102 |
Best forecast wave conditions in Northland | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Tawharanui Surf forecast
The above surf forecast table for Tawharanui provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tawharanui can be found by selecting the local surf guide option on the grey menu. Our Tawharanui 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 (Tawharanui) 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 Tawharanui 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.
Tawharanui is 48 km (30 miles) from the city of Northshore. If you plan a holiday in Northland, look for hotels and other accommodation in Northshore. Northshore has rooms for a wide range of budgets as well as car hire and transport links.











