Surf Forecasts:
Tawharanui surf forecast from 15 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 3AM (local time) - 1.5ft (0.5m), 8s period, E swell with offshore winds.
- Most powerful swell: Monday 17 Aug, 6AM (local time) - 4.5ft (1.4m), 7s period, E swell with 215 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 3AM (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 3AM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.3m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tawharanui in the next 16 days are 1.4m 7s and forecast to arrive on Monday (Aug 17) 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 1.9m 6s period and expected on Monday (Aug 17) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 18th Aug) | 1.5ft (0.5m) 8s |
| Best Surf | 3AM (Tue 18th Aug) | 1.5ft (0.5m) 8s |
| Most Powerful | 6AM (Mon 17th Aug) | 4.5ft (1.4m) 7s |
Table - best surf conditions forecast for Tawharanui over the next 16 days.
The Lowdown
Alright, Rusty here again, breakin’ it down for Tawharanui.
Honestly, we’re looking at a long, flat spell. From this Saturday the 15th, there’s hardly a ripple on offer for the better part of ten days. You see a few small waves, like 0.7m to 0.5m on the 15th and 16th, but the wind’s all messed up and the energy is tiny (99 dropping to 35). It’s a write-off for nearly a week and a half. Don’t bother paddling out until this clears.
Now, things finally wake up on the 27th of August. Thursday afternoon shows a 1.8m northeast groundswell coming in with a gentle offshore breeze. That’s clean, and the energy jumps to 217, so there’s some proper punch. Tawharanui loves that north-east exposure, so that’s the one you want to circle.
Friday the 28th keeps the run going – 2.1m from the north with clean conditions and a big energy reading of 718. That’s getting into solid territory, more for the experienced crew. And Saturday the 29th is the highlight: a clean 2.0m north swell with offshore winds and strong energy (496). Water temp is about 14°C, right on the mark for this time of year.
Bear in mind, that north swell period around 8-9 seconds can be a bit straight at the beach sections, but it’s still the best run of the whole outlook. Crowds are often around here, so expect company on those good Saturday morning waves.
It’s a long wait, but that late August swell is worth holding out for.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Sun night. Very mild (max 16°C on Sat afternoon, min 7°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Very mild (max 14°C on Thu afternoon, min 9°C on Tue night). Winds decreasing (fresh winds from the SSW on Tue afternoon, calm by Thu afternoon). | |||||||||||||||||||
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) | E 8 | ENE 8 | E 8 | E 8 | ENE 9 | ESE 8 | E 9 | E 8 | E 9 | E 9 | E 8 | E 10 | E 10 | E 9 | ESE 9 | ESE 9 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 69 | 96 | 50 | 32 | 8 | 104 | 96 | 51 | 37 | 23 | 13 | 7 | 2 | 7 | 8 | 15 | 5 | 5 | 1 | 1 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:04PM2.80m | 9:32AM2.69m | 9:50PM2.75m | 10:19AM2.64m | 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 | |||||||
Low Tide | 3:01PM0.33m | 3:32AM0.40m | 3:45PM0.39m | 4:15AM0.43m | 4:28PM0.49m | 4:58AM0.50m | 5:14PM0.61m | 5:42AM0.59m | 6:02PM0.73m | 6:26AM0.70m | 6:53PM0.84m | 7:13AM0.81m | 7:47PM0.93m | |||||||
 |  | |  |  | | |  | |  | | | | | | |  |  | | | |
 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — |
 | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — |
mm | — | — | — | 1 | 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 14 | 14 | 14 | 9 | 9 | 11 | 10 | 11 | 12 | 10 | 12 | 13 | 11 | 12 | 14 | 12 | 13 | 14 | 12 |
Feels °C | 12 | 9 | 9 | 11 | 2 | 2 | 4 | 3 | 4 | 6 | 3 | 6 | 6 | 7 | 10 | 12 | 10 | 9 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | E 8 | ENE 8 | E 8 | E 8 | ENE 9 | ESE 8 | E 9 | E 8 | E 9 | E 9 | E 8 | E 10 | E 10 | E 9 | ESE 9 | ESE 9 | E 8 | E 8 | E 6 | E 8 |
| kJ | 69 | 96 | 50 | 32 | 8 | 104 | 96 | 51 | 37 | 23 | 13 | 7 | 2 | 7 | 8 | 15 | 5 | 5 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | NE 7 | — | — | SSW 4 | E 9 | — | — | N 11 | N 11 | N 11 | N 10 | — | E 7 | — | SSW 3 | — | — | — | E 8 | — |
| kJ | 30 | — | — | 1 | 6 | — | — | 2 | 2 | 2 | 2 | — | 1 | — | 1 | — | — | — | 1 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | NE 9 | N 12 | — | — | N 11 | — | — | N 10 | N 10 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 3 | 3 | — | — | 2 | — | — | 2 | 2 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 3 | SW 4 | SW 4 | W 4 | SE 4 | SSE 5 | S 4 | SSW 4 | S 4 | S 4 | SSW 4 | S 5 | S 4 | S 4 | S 3 | — | — | — | — | — |
| kJ | 3 | 22 | 21 | 9 | 59 | 78 | 33 | 29 | 15 | 21 | 46 | 71 | 28 | 10 | 1 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 22 | 22 | 22 | 162 | 308 | 13 | 13 | 22 | 48 | 22 | 22 | 157 | 60 | 66 | 59 | 60 | 107 | 202 | 202 |
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.
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