Surf Forecasts:
Tawharanui surf forecast from 17 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 6AM (local time) - 1.5ft (0.5m), 8s period, E swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 9AM (local time) - 4ft (1.2m), 5s period, NNW swell with 72 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 6AM (local time) - 1.5ft (0.5m), 8s period with E swell.
Best Forecast Surf Conditions for Tawharanui this week:
The surf forecast for Tawharanui over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 6AM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.1m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
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 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Wednesday (Aug 19) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 18th Aug) | 1.5ft (0.5m) 8s |
| Best Surf | 6AM (Tue 18th Aug) | 1.5ft (0.5m) 8s |
| Most Powerful | 9AM (Sun 23rd Aug) | 4ft (1.2m) 5s |
Table - best surf conditions forecast for Tawharanui over the next 16 days.
The Lowdown
G’day, Rusty here.
Alright, look, I’m not gonna sugar-coat it. The next couple of weeks at Tawharanui are a tough watch. We’ve got a proper drought on our hands. The first standout doesn’t pop up until Saturday the 29th of August, so you’re looking at a solid 12-day stretch of flat to tiny, messy junk. There’s a bit of movement in the second week, but it’s mostly wind-affected and small, not worth paddling out for.
The water temp is sitting at 58°F, which is pretty average for this time of year, no real surprises there.
Now, the one true highlight in this whole 16-day window lands on Saturday morning, the 29th of August. Tawharanui, a beach and reef setup exposed to the NE, finally gets a pulse. We’ve got a 5ft swell from the north with a period of 8 seconds, and combined wave energy is a strong 307. That’s enough to make it interesting for intermediate surfers – it’s not beginner wave height, but it’s not into expert-only territory either. The wind? Glassy. Dead calm. That’s the big win. You’re looking at clean, shaped-up lines rolling in. A high tide could make the reef sections work, but the beachies might get a bit fat on that period. Still, this is your window.
Saturday afternoon sees the wind shift onshore from the NE at 15 mph, and the swell drops back to 5ft, so the morning is the clear pick. Early birds will get the reward.
After that, it fades fast. Sunday the 30th brings a smaller 3ft north swell, but it’s got a 15 mph onshore wind ruining it. The rest of the run into early September is a mix of tiny swell and crummy cross-onshore breezes – not worth getting wet for.
So, short story: If you’re desperate for a wave, be on the sand at Tawharanui first light on Saturday the 29th. It’s the only call in a long, quiet spell.
Stay salty,
Rusty
Short Range ForecastMostly dry. Very mild (max 13°C on Tue afternoon, min 8°C on Tue night). Winds decreasing (fresh winds from the S on Wed morning, light winds from the S by Thu afternoon). | Days 5-7 Weather SummarySome drizzle, heaviest during Sun afternoon. Very mild (max 16°C on Sun afternoon, min 11°C on Thu night). Winds increasing (light winds from the WNW on Thu night, fresh winds from the WNW by Sun morning). | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 8 | E 9 | E 9 | E 9 | E 10 | E 12 | E 9 | ESE 9 | ESE 9 | E 8 | E 9 | E 9 | E 9 | NW 4 | NE 14 | NE 14 | NNW 5 | N 6 | NNW 7 |
Wave Graph | |||||||||||||||||||
50 | 39 | 24 | 13 | 7 | 3 | 6 | 26 | 25 | 12 | 13 | 7 | 6 | 5 | 8 | 8 | 72 | 31 | 17 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 10:35PM2.67m | 11:04AM2.57m | 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 | |||||||
Low Tide | 4:58AM0.50m | 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 | |||||||
— | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | |
— | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 10 | 11 | 13 | 11 | 10 | 11 | 11 | 11 | 13 | 12 | 13 | 14 | 13 | 15 | 15 | 13 | 15 | 16 | 13 |
Feels °C | 4 | 5 | 7 | 6 | 4 | 6 | 8 | 8 | 10 | 9 | 9 | 10 | 9 | 11 | 10 | 10 | 9 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 9 | E 9 | E 9 | E 10 | E 7 | ESE 7 | ESE 9 | ESE 9 | E 8 | E 9 | E 9 | E 9 | NW 4 | NNW 4 | NE 14 | NE 13 | N 6 | NNW 7 |
50 | 39 | 24 | 13 | 7 | 1 | 4 | 26 | 25 | 12 | 13 | 7 | 6 | 4 | 2 | 8 | 6 | 31 | 17 | |
Swell 2 Height (m) Direction Period (s) | N 11 | N 11 | NE 10 | N 10 | N 10 | E 12 | S 3 | — | — | — | — | — | E 10 | E 10 | NE 14 | E 14 | E 13 | NE 13 | NE 11 |
2 | 2 | 4 | 2 | 2 | 3 | 1 | — | — | — | — | — | 2 | 2 | 8 | 4 | 3 | 7 | 4 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | N 10 | N 10 | N 10 | E 9 | — | — | — | — | — | — | N 16 | E 10 | E 13 | — | E 13 | E 12 |
— | — | — | 2 | 2 | 2 | 6 | — | — | — | — | — | — | 5 | 2 | 4 | — | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | S 4 | S 4 | S 3 | SSW 4 | S 5 | SSE 4 | SSW 3 | — | — | — | — | WNW 3 | WNW 3 | WSW 3 | W 3 | NW 4 | NNW 5 | WNW 3 | W 3 |
38 | 10 | 6 | 22 | 70 | 13 | 1 | — | — | — | — | 1 | 4 | 1 | 1 | 12 | 72 | 3 | 5 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 48 | 66 | 216 | 78 | 22 | 22 | 22 | 60 | 59 | 66 | 66 | 279 | 359 | 359 | 359 | 66 | 115 |
Best forecast wave conditions in Northland | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











