Surf Forecasts:
Nera Rivermouth surf forecast from 17 Aug 2026:
- Best quality surf: Monday 24 Aug, 11PM (local time) - 3.5ft (1.0m), 17s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 25 Aug, 5AM (local time) - 4.5ft (1.3m), 15s period, SSW swell with 725 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 5PM (local time) - 4.5ft (1.4m), 6s period with SE swell.
Best Forecast Surf Conditions for Nera Rivermouth this week:
The surf forecast for Nera Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 5PM. The primary swell is predicted to be 1.4m and 6s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Nera Rivermouth in the next 16 days are 1.3m 15s and forecast to arrive on Tuesday (Aug 25) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 13s period and expected on Tuesday (Aug 18) at 11AM.
| Wave Type | Time (+11) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sun 23rd Aug) | 4.5ft (1.4m) 6s |
| Best Surf | 11PM (Mon 24th Aug) | 3.5ft (1.0m) 17s |
| Most Powerful | 5AM (Tue 25th Aug) | 4.5ft (1.3m) 15s |
Table - best surf conditions forecast for Nera Rivermouth over the next 16 days.
The Lowdown
Alright, grab your wetsuit, let’s see what we’ve got. To be honest, the next week and a half is pretty bleak around here. We’ve got a long stretch of small, jumbled surf and shifty cross-shore breezes that are going to make things feel messier than they look. There are a few windows where it cleans up, but the swell just isn't there. It’s one of those waiting games.
The one spot that’s on the radar is Nera Rivermouth. For a river mouth, it's fairly sheltered, but that also means it needs a decent push of swell to get going. The start of the window is a write-off. Tuesday the 18th through to Thursday the 20th are all poor, with the swell all over the place and winds cross-shore. The energy is weak, under 100, and there’s just no love there. Friday the 21st and Saturday the 22nd are flat, clean but flat. Sunday the 23rd is the first time it gets its act together, but it’s a weak, short-period bump. Forget it, it’ll be closing out and messy.
Now, here’s where it gets interesting. We've got a solid stretch from Monday the 25th through to Thursday the 27th. This is the standout. The winds go light and offshore, and for a couple of those mornings it turns totally glassy. The swell kicks up to around 4ft, coming from the SSW, and the period starts to push up into the 14-17 second range. That’s proper groundswell for this spot. The combined energy is strong, around 679 to 907, so there’s real power behind it. But, and it's a big but, long-period groundswell like that can run a bit straight at a river mouth. You’ll want to pick your waves, but when it connects, it’ll be worth the paddle. It's a beginner-friendly break, so with that size it's still okay, but keep an eye on your positioning with those long-period sets.
After that, it backs off again. Friday the 28th and Saturday the 29th fade quickly, and the wind goes onshore and bumpy. Then there's a little tease on Sunday the 30th and Monday the 31st – small, clean, offshore winds, but the swell is really small, only around 2-3ft. It's ridable but pretty ordinary.
The last couple of days, the 1st and 2nd of September, the weather turns against us with rain and onshore winds, so that’s a no-go.
So, if you want the best of it, you’re looking at that mid-week, the 25th to 27th. It’s not going to be huge, but the conditions will be clean. The water temp is sitting at 73°, which is about normal for this time of year, nothing weird going on there.
It’s a slow start, but the ocean’s got a pulse. Hang in there.
Rusty
Short Range ForecastMostly dry. Warm (max 21°C on Thu morning, min 18°C on Tue night). Winds decreasing (fresh winds from the SE on Tue afternoon, light winds from the E by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Sat afternoon, min 18°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 12 | S 9 | SW 15 | SSW 14 | SE 8 | SE 8 | SW 14 | SE 10 | SSE 10 | SSE 10 | SSE 9 | SE 6 | SSE 7 | SSW 21 | SSW 19 | SSW 16 |
Wave Graph | |||||||||||||||||||||
505 | 428 | 293 | 207 | 135 | 85 | 0 | 57 | 38 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 132 | 0 | 86 | 280 | 590 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross | off |
High Tide | 10:10AM0.97m | 10:04PM1.12m | 11:23AM0.92m | 10:47PM1.07m | 12:47PM0.90m | 11:37PM1.02m | 2:09PM0.92m | 00:36AM1.00m | 3:13PM0.95m | 1:37AM1.01m | 3:59PM0.99m | 2:31AM1.03m | 4:35PM1.03m | 3:18AM1.07m | |||||||
Low Tide | 3:43PM0.54m | 4:54AM0.38m | 4:37PM0.64m | 5:57AM0.37m | 5:47PM0.71m | 7:01AM0.36m | 7:06PM0.73m | 8:01AM0.33m | 8:15PM0.73m | 8:52AM0.28m | 9:09PM0.70m | 9:36AM0.24m | 9:52PM0.67m | ||||||||
6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | |
— | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 19 | 19 | 20 | 19 | 21 | 21 | 20 | 21 | 22 | 21 | 22 | 23 | 21 | 23 | 23 | 22 | 24 | 24 | 22 |
Feels °C | 14 | 14 | 13 | 15 | 14 | 13 | 19 | 17 | 18 | 18 | 19 | 20 | 21 | 21 | 20 | 23 | 22 | 23 | 25 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | S 13 | SSW 15 | S 11 | SSW 11 | SSW 10 | SSE 10 | S 9 | S 9 | SSE 9 | SSE 8 | SSE 6 | SSE 11 | SE 10 | SSW 9 | SSE 10 | SSE 9 | SE 6 | SSE 7 | SSE 9 | SSW 19 | SSW 16 |
1308 | 428 | 573 | 121 | 86 | 248 | 76 | 125 | 302 | 103 | 49 | 151 | 82 | 28 | 83 | 52 | 33 | 26 | 30 | 280 | 590 | |
Swell 2 Height (m) Direction Period (s) | SSW 15 | — | SSW 14 | SSW 14 | SSW 13 | SSW 12 | SE 9 | SE 9 | SSW 14 | S 10 | S 10 | S 10 | S 10 | S 12 | S 9 | S 11 | SE 9 | SE 9 | SSW 21 | SSE 10 | SSE 6 |
505 | — | 293 | 207 | 135 | 85 | 88 | 39 | 38 | 90 | 92 | 49 | 47 | 12 | 14 | 37 | 27 | 12 | 86 | 10 | 22 | |
Swell 3 Height (m) Direction Period (s) | — | — | SSE 12 | S 22 | SW 20 | S 10 | SSW 12 | SW 15 | S 18 | SSE 14 | SE 11 | SW 14 | S 13 | S 18 | S 11 | S 16 | S 10 | S 10 | S 9 | S 10 | SSW 9 |
— | — | 113 | 9 | 16 | 47 | 47 | 57 | 6 | 20 | 19 | 8 | 13 | 6 | 10 | 5 | 18 | 7 | 6 | 2 | 8 | |
Wind waves Height (m) Direction Period (s) | SSE 13 | S 12 | SSE 12 | SSE 8 | SSE 9 | SSE 10 | — | SE 8 | — | SE 8 | SE 8 | — | — | SSE 10 | — | — | SE 6 | — | SE 11 | SSE 5 | — |
1828 | 1256 | 1203 | 244 | 348 | 511 | — | 232 | — | 284 | 292 | — | — | 164 | — | — | 132 | — | 137 | 44 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1361 | 1403 | 1361 | 1357 | 1297 | 1 | 1 | 1361 | 1 | 1295 | 1297 | 1 | 1 | 1 | 1 | 1 | 0 | 37 | 1 | 858 | 0 |
Best forecast wave conditions in New Caledonia | |||||||||||||||||||||
Best forecast wave conditions in New Caledonia | |||||||||||||||||||||
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Information about the Nera Rivermouth Surf forecast
The above surf forecast table for Nera Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nera Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Nera Rivermouth 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 (Nera Rivermouth) 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 Nera Rivermouth 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 New Caledonia? If you are looking for accommodation near Nera Rivermouth, camping, hotels and holiday cottages in New Caledonia, consider staying in Poro which is 38 km (24 miles) away. Other places in and around New Caledonia where you can find information about places to rent, and car hire include Kouaoua which is 44 km (27 miles) away and Thio, 78 km (48 miles) away.











