Surf Forecasts:
Tawharanui surf forecast from 16 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 12AM (local time) - 2ft (0.6m), 10s period, E swell with offshore winds.
- Most powerful swell: Sunday 23 Aug, 3PM (local time) - 6.5ft (2.0m), 6s period, NNW swell with 340 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 12AM (local time) - 2ft (0.6m), 10s 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 12AM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.1m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tawharanui in the next 16 days are 2.0m 6s and forecast to arrive on Sunday (Aug 23) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 5s period and expected on Monday (Aug 17) at 3AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 18th Aug) | 2ft (0.6m) 10s |
| Best Surf | 12AM (Tue 18th Aug) | 2ft (0.6m) 10s |
| Most Powerful | 3PM (Sun 23rd Aug) | 6.5ft (2.0m) 6s |
Table - best surf conditions forecast for Tawharanui over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s chew over what’s happening.
To be honest, mate, it’s a pretty bleak stretch ahead for Tawharanui. We’re looking at a solid run of poor conditions, with nothing really worth getting excited about until Monday, August 31st, and even then it’s barely worth calling a surf.
Tawharanui is a beach and reef setup, handling swell from the NE, so it’s got exposure, but for the next couple of weeks the energy just isn’t showing up. When a little bit of swell does pop, the wind is usually ruining it. Water temp is around 58°, which is about average for the time of year, nothing out of the ordinary.
Starting Sunday the 16th of August, it’s a struggle. Sunday morning gives us a 2-foot easterly swell with a short 8-second period, and while the wind is a fresh offshore from the WSW (19 mph), the combined energy is weak at just 50. The report says it’s poor surf. That theme carries through the whole week – small swells, crummy winds.
There’s a tease on Sunday the 23rd of August, when a 4-foot NNW swell shows up in the morning, but with a period of only 5 seconds and a moderate cross-shore wind. By the afternoon it jumps to 7 feet with 346 combined energy, but the period is still a weak 6 seconds and the wind turns to a fresh cross-onshore, making it lumpy and messy – better suited to kites than surfboards.
Monday the 24th of August is a total loss with onshore winds hitting 28 mph and the swell dropping back under 2 feet. From there through the next week, we get strong offshore winds but basically no swell – heights of 1 foot or less.
Finally, on Monday the 31st of August, the morning shows a 2-foot swell from the ENE with a 7-second period, combined energy of 53, and a light cross-offshore breeze from the southeast (9 mph) keeping it clean. The report says it’s “surfable but very ordinary” – not good, but it’s the only window in the whole 16 days that isn’t a complete write-off. The afternoon drops back to 2 feet.
So the standout? There isn’t really one. If you’re keen, the morning of Monday the 31st of August is your best bet, but it’s nothing to write home about. It’s a long dry spell for an area that’s usually fairly consistent, so this kind of blank run is a bit out of the ordinary. Forecasts can always change, though.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Sun night. Very mild (max 15°C on Sun morning, min 7°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Very mild (max 14°C on Fri afternoon, min 8°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | E 8 | E 8 | SE 5 | E 9 | E 9 | E 10 | E 9 | E 9 | E 9 | E 9 | ESE 7 | ESE 9 | ESE 9 | ESE 9 | E 8 | E 8 | E 8 | E 7 | N 16 | N 14 | NW 4 |
Wave Graph | |||||||||||||||||||||
50 | 33 | 91 | 184 | 119 | 65 | 25 | 25 | 13 | 6 | 5 | 8 | 15 | 15 | 12 | 5 | 5 | 1 | 5 | 4 | 8 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | off | glassy | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 2:15PM2.16m | 2:28AM2.13m | |||||||
Low Tide | 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 | 8:03AM0.90m | 8:42PM0.99m | ||||||||
7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | |
— | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | |
mm | — | 3 | 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 10 | 9 | 11 | 9 | 12 | 12 | 11 | 9 | 11 | 11 | 11 | 13 | 11 | 13 | 14 | 13 | 15 | 15 | 13 |
Feels °C | 11 | 11 | 3 | 2 | 5 | 3 | 6 | 5 | 6 | 3 | 6 | 6 | 9 | 11 | 9 | 9 | 10 | 9 | 11 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | N 12 | E 9 | E 9 | E 10 | E 9 | E 9 | E 9 | E 9 | ESE 7 | ESE 9 | ESE 9 | ESE 9 | E 8 | E 8 | E 8 | — | — | N 14 | NE 14 |
50 | 33 | 3 | 184 | 119 | 65 | 25 | 25 | 13 | 6 | 5 | 8 | 15 | 15 | 12 | 5 | 5 | — | — | 4 | 8 | |
Swell 2 Height (m) Direction Period (s) | — | NE 9 | — | — | — | N 11 | N 11 | NE 10 | N 10 | — | E 12 | — | — | — | — | — | — | E 7 | N 16 | — | E 12 |
— | 3 | — | — | — | 2 | 2 | 4 | 2 | — | 3 | — | — | — | — | — | — | 1 | 5 | — | 3 | |
Swell 3 Height (m) Direction Period (s) | — | E 8 | — | — | — | — | — | — | — | E 8 | E 10 | — | — | — | — | E 8 | — | — | E 6 | E 13 | NE 11 |
— | 1 | — | — | — | — | — | — | — | 1 | 2 | — | — | — | — | 1 | — | — | 1 | 3 | 5 | |
Wind waves Height (m) Direction Period (s) | SW 4 | WSW 3 | SE 5 | SSE 5 | S 5 | SSW 4 | S 4 | S 4 | SSW 4 | S 5 | SSE 4 | S 3 | — | — | — | NW 3 | NW 3 | WSW 3 | WNW 3 | WNW 3 | NW 4 |
13 | 4 | 91 | 108 | 43 | 43 | 15 | 14 | 21 | 42 | 5 | 6 | — | — | — | 2 | 2 | 3 | 1 | 3 | 8 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 22 | 157 | 44 | 1 | 0 | 22 | 33 | 61 | 78 | 59 | 64 | 59 | 59 | 60 | 279 | 359 | 359 | 359 | 359 | 102 |
Best forecast wave conditions in Northland | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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.











