Surf Forecasts:
Nera Rivermouth surf forecast from 21 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 2AM (local time) - 3ft (0.9m), 17s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 25 Aug, 11AM (local time) - 4.5ft (1.3m), 15s period, SSW swell with 756 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 8PM (local time) - 1.5ft (0.5m), 19s period with SSW 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 Monday (Aug 24) at 8PM. The primary swell is predicted to be 0.5m and 19s period. The wind is predicted to be 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 11AM. 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 7s period and expected on Saturday (Aug 22) at 5PM.
| Wave Type | Time (+11) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 24th Aug) | 1.5ft (0.5m) 19s |
| Best Surf | 2AM (Tue 25th Aug) | 3ft (0.9m) 17s |
| Most Powerful | 11AM (Tue 25th Aug) | 4.5ft (1.3m) 15s |
Table - best surf conditions forecast for Nera Rivermouth over the next 16 days.
The Lowdown
Alright, Rusty here. Let me walk you through the next 16 days for Nera Rivermouth. It’s a slow burner with a couple of moments.
It’s flat as a pancake until Monday the 24th, when we get a measly little bump of 0.7ft to 1ft from the SSW – combined energy (32 to 100) is basically nothing. Don’t even bother.
Tuesday the 25th gets interesting. We see a clean 4ft SSW groundswell with a long 15-second period. The wind is a light cross-offshore from the ESE, keeping things clean. The combined energy is 756 (moderate). The long period makes the paddle easy, but at a river mouth it can straighten out. Still a nice wave for the keen beginner.
Wednesday the 26th is clean too – 4ft SSW swell, 15-second period, and the wind turns offshore from the ENE by afternoon, making it glassy. Energy is 394 (moderate). Thursday the 27th morning is dead calm and clean with a 3ft swell (402 energy).
Then it’s a mess from Friday the 28th to Monday the 31st – onshore winds and small, chopped-up waves. Not worth the drive.
Now, the real talk. Tuesday the 1st of September brings a solid 5ft SSW groundswell with an 18-second period. Combined energy is 1435 (strong). The wind is a moderate cross-shore from the SE though, which messes with the surface. For a river mouth, that long period can make it break too straight. It’s powerful, but not pristine.
Wednesday the 2nd of September has a similar story – 6ft of swell (1254 energy) but still cross-shore wind.
The best of the whole outlook lands on Saturday the 5th of September. We get a 6ft to 7ft SSW swell with a massive 18 to 19-second period. The combined energy hits a whopping 1785 to 2715 (strong to very strong). The wind is a light cross-shore from the SE in the morning, and a moderate cross-shore in the afternoon. For size and power, this is the one. But at that size (over 5ft), it’s for experienced surfers only. The long period and river mouth setup will make it powerful and straight. The crowds are possible *sometimes*, so if you get out early on that Saturday morning when the wind is lightest, you’ll have a shot at some clean, 7ft bombs.
So circle Saturday the 5th of September. That morning window is your best bet. The rest of the run is mostly marginal.
Rusty
Short Range ForecastMostly dry. Warm (max 24°C on Sun afternoon, min 18°C on Fri night). Winds decreasing (fresh winds from the SE on Fri afternoon, light winds from the E by Sat night). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Mon afternoon, min 19°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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) | SE 8 | SW 14 | SSE 10 | SE 7 | SSE 7 | SSE 9 | SE 8 | SE 9 | SSW 18 | SSW 20 | SSW 17 | SSW 15 | SSW 14 | SSW 14 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 16 | SSW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 32 | 75 | 528 | 756 | 668 | 585 | 491 | 394 | 376 | 402 | 435 | 236 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | off | off | off | cross | cross-off |
High Tide | 2:09PM0.92m | 00:36AM1.00m | 3:13PM0.95m | 1:37AM1.01m | 3:59PM0.99m | 2:31AM1.03m | 4:35PM1.03m | 3:18AM1.07m | 5:07PM1.08m | 4:01AM1.10m | 5:36PM1.12m | 4:41AM1.13m | 6:04PM1.16m | |||||||
Low Tide | 7:06PM0.73m | 8:01AM0.33m | 8:15PM0.73m | 8:52AM0.28m | 9:09PM0.70m | 9:36AM0.24m | 9:52PM0.67m | 10:14AM0.20m | 10:31PM0.63m | 10:49AM0.17m | 11:08PM0.59m | 11:23AM0.16m | 11:44PM0.54m | |||||||
 |  |  | | | | |  | | | | | | | | | | | | | |
 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — |
 | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 22 | 23 | 21 | 23 | 24 | 22 | 24 | 25 | 22 | 23 | 23 | 20 | 23 | 24 | 22 | 23 | 23 | 21 |
Feels °C | 16 | 19 | 20 | 20 | 21 | 23 | 23 | 22 | 24 | 24 | 22 | 23 | 21 | 19 | 22 | 23 | 21 | 23 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | SE 12 | SSE 10 | SSE 10 | SSE 7 | SSE 9 | SSE 9 | SE 9 | SSE 9 | SE 10 | SSW 17 | SSW 15 | SSW 14 | SSW 14 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 16 | SSW 14 |
| kJ | 101 | 140 | 94 | 120 | 43 | 53 | 55 | 41 | 32 | 47 | 528 | 756 | 668 | 585 | 491 | 394 | 376 | 402 | 435 | 236 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | SSW 9 | S 9 | S 11 | S 10 | S 10 | S 9 | SSW 20 | SSE 6 | SE 7 | — | SSE 6 | SSE 6 | SE 7 | SSE 6 | SE 6 | SE 6 | SSE 6 |
| kJ | 71 | 70 | 47 | 28 | 23 | 21 | 18 | 17 | 6 | 75 | 15 | 22 | — | 20 | 17 | 23 | 16 | 10 | 11 | 15 |
Swell 3 Height (m) Direction Period (s) | SE 13 | SW 14 | S 13 | S 12 | S 12 | S 16 | S 16 | SE 12 | SSW 18 | SSW 16 | SW 13 | SE 9 | — | SE 13 | SE 13 | — | SE 14 | SE 13 | SE 13 | SE 12 |
| kJ | 45 | 8 | 13 | 12 | 11 | 5 | 5 | 6 | 32 | 25 | 45 | 12 | — | 7 | 7 | — | 8 | 7 | 7 | 6 |
Wind waves Height (m) Direction Period (s) | SE 8 | — | — | SE 7 | — | — | SE 8 | — | — | SE 10 | — | — | SE 6 | — | — | — | — | — | SE 7 | — |
| kJ | 292 | — | — | 187 | — | — | 96 | — | — | 136 | — | — | 54 | — | — | — | — | — | 73 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1271 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 38 | 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.
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