Surf Forecasts:
Wharariki Beach surf forecast from 20 Aug 2026:
- Best quality surf: Monday 24 Aug, 6AM (local time) - 11ft (3.5m), 15s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 3AM (local time) - 11ft (3.5m), 14s period, W swell with 5,448 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 6AM (local time) - 11ft (3.5m), 15s period with W swell.
Best Forecast Surf Conditions for Wharariki Beach this week:
The surf forecast for Wharariki Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 6AM. The primary swell is predicted to be 3.5m and 15s period with a secondary swell of 0.9m and 15s. Another secondary swell of 0.4m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Wharariki Beach in the next 16 days are 3.5m 14s and forecast to arrive on Monday (Aug 24) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Friday (Aug 21) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 24th Aug) | 11ft (3.5m) 15s |
| Best Surf | 6AM (Mon 24th Aug) | 11ft (3.5m) 15s |
| Most Powerful | 3AM (Mon 24th Aug) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Wharariki Beach over the next 16 days.
The Lowdown
Alright, grab a cup of tea, let's have a look at the charts for the next couple of weeks. There's a lot of weather coming through, so we'll need to be patient. The water temperature here is about average for the time of year, nothing out of the ordinary.
First up, we've got a little window on Friday morning at Wharariki Beach. It's not huge, with a 3 ft west swell, but the period is a very long 16 seconds, which brings in some serious groundswell energy. The combined energy is only 321 (weak), so it's not a powerhouse, but with a clean, cross-off breeze from the WSW, it'll be a nice, clean session. It's a bit of a teaser because the wind is due to go onshore later in the day.
After that, things get a bit rowdy. Saturday and Sunday are a right-off with strong winds, and by Sunday, we're looking at a gale-force cross-shore with 13 ft of short-period, messy swell. The combined energy jumps to 2913 (strong), but it's a washing machine. Not for surfing.
The real standout is going to be Monday the 24th. We've got a solid 10 ft west swell with a 15-second period, and the combined energy is a massive 4717 (very strong). This is a powerful, long-period groundswell. The catch is the guidance says it's likely too big for this break, and it's rated for experts only. The wind is a clean cross-off from the WSW, so it will look incredible, but you'll need to be on your A-game. Tuesday morning is still decent, with a 7 ft west swell and clean conditions, but the energy is dropping.
We hit a bit of a lull from Tuesday afternoon through to the end of the month. The wind is messy, and the swell drops right off.
Then, on the 30th of August, things get interesting again. It's a bit of a long-range call, so keep an eye on it, but Sunday afternoon is looking glassy. The wind is a light, 5 km/h offshore from the NW, making conditions perfect. There's a 7 ft west swell with a 16-second period, giving a combined energy of 2500 (strong). This is a powerful, clean groundswell that will be excellent for experienced surfers, though the long period might make it a bit walled up on the beach. Monday the 31st is a bit of a drop-off, but still a clean 3 ft west swell for a morning session.
The first week of September is small and ordinary, with a brief pulse of 7 ft NNW swell on the 3rd, but it's short-period and the wind is onshore, so it's not worth getting excited about.
So, the pick of the bunch is the massive groundswell on Monday the 24th for the experts, and the glassy, powerful session on Sunday the 30th for the experienced crew. The rest of the time, we're waiting for the weather to sort itself out.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Sat night. Very mild (max 14°C on Sat afternoon, min 9°C on Thu night). Winds increasing (light winds from the SW on Thu night, gales from the W by Sun morning). | Days 5-7 Weather SummarySome drizzle, heaviest during Wed morning. Very mild (max 14°C on Wed morning, min 11°C on Sun night). Winds decreasing (near gales from the WSW on Sun night, light winds from the SSW by Wed afternoon). | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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) | W 14 | W 16 | NW 15 | W 14 | W 14 | W 13 | NW 8 | WNW 10 | WNW 10 | W 12 | W 15 | W 15 | W 15 | W 15 | W 14 | W 14 | W 14 | W 14 | W 13 |
Wave Graph | |||||||||||||||||||
236 | 314 | 9 | 4 | 93 | 119 | 1401 | 2620 | 2754 | 4613 | 4437 | 3532 | 2474 | 1976 | 1340 | 1111 | 1227 | 1243 | 590 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross | cross | cross | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross | cross-off |
High Tide | 3:31AM2.47m | 4:09PM2.44m | 4:39AM2.33m | 5:24PM2.37m | 5:58AM2.31m | 6:40PM2.42m | 7:09AM2.40m | 7:41PM2.57m | 8:05AM2.55m | 8:29PM2.75m | 8:49AM2.73m | 9:09PM2.94m | |||||||
Low Tide | 9:24PM0.93m | 9:51AM0.95m | 10:28PM1.08m | 11:00AM1.06m | 11:45PM1.12m | 12:16PM1.05m | 00:58AM1.04m | 1:22PM0.93m | 1:56AM0.88m | 2:13PM0.76m | 2:42AM0.68m | 2:56PM0.57m | |||||||
— | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | |
— | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | |
mm | — | — | — | — | — | 1 | 19 | 1 | — | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 10 | 10 | 11 | 12 | 13 | 14 | 14 | 13 | 12 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 13 |
Feels °C | 6 | 5 | 2 | 4 | 7 | 7 | 5 | 0 | -1 | -2 | 3 | 2 | 3 | 6 | 5 | 6 | 8 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | W 14 | W 16 | NW 15 | N 4 | W 14 | W 13 | — | — | N 9 | NW 9 | NW 15 | NW 15 | WNW 15 | WNW 15 | WNW 15 | NW 5 | NW 6 | — | W 13 |
236 | 314 | 9 | 1 | 93 | 119 | — | — | 159 | 103 | 262 | 104 | 87 | 45 | 21 | 10 | 19 | — | 590 | |
Swell 2 Height (m) Direction Period (s) | W 4 | NW 4 | — | W 14 | N 6 | W 20 | — | — | — | WNW 12 | N 8 | — | NW 6 | — | — | WNW 14 | WNW 14 | — | W 19 |
8 | 1 | — | 4 | 1 | 31 | — | — | — | 101 | 18 | — | 10 | — | — | 20 | 20 | — | 29 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 14 | — | — | — | — | N 8 | — | — | NW 9 | — | — | W 8 | — | — | — |
— | — | — | — | 4 | — | — | — | — | 32 | — | — | 3 | — | — | 1 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | W 4 | W 5 | W 5 | WNW 4 | NW 5 | NW 8 | WNW 10 | WNW 10 | W 12 | W 15 | W 15 | W 15 | W 15 | W 14 | W 14 | W 14 | W 14 | WNW 13 |
— | 6 | 131 | 98 | 43 | 94 | 1401 | 2620 | 2754 | 4613 | 4437 | 3532 | 2474 | 1976 | 1340 | 1111 | 1227 | 1243 | 555 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 111 | 152 | 111 | 111 | 152 | 192 | 86 | 378 | 220 | 97 | 152 | 111 | 111 | 152 | 152 | 152 | 95 | 0 |
Best forecast wave conditions in Nelson - West Coast | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
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Information about the Wharariki Beach Surf forecast
The above surf forecast table for Wharariki Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Wharariki Beach can be found by selecting the local surf guide option on the grey menu. Our Wharariki Beach 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 (Wharariki Beach) 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 Wharariki Beach 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 - West Coast? If you are looking for accommodation near Wharariki Beach, camping, hotels and holiday cottages in Nelson - West Coast, consider staying in Nelson which is 100 km (62 miles) away.











