Surf Forecasts:
Nera Rivermouth surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 8PM (local time) - 3.5ft (1.0m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 2PM (local time) - 3ft (0.9m), 15s period, SSW swell with 402 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 11PM (local time) - 1.5ft (0.4m), 18s 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 11PM. The primary swell is predicted to be 0.4m and 18s 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 0.9m 15s and forecast to arrive on Tuesday (Aug 25) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 10s period and expected on Wednesday (Aug 19) at 11PM.
| Wave Type | Time (+11) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 24th Aug) | 1.5ft (0.4m) 18s |
| Best Surf | 8PM (Tue 25th Aug) | 3.5ft (1.0m) 14s |
| Most Powerful | 2PM (Tue 25th Aug) | 3ft (0.9m) 15s |
Table - best surf conditions forecast for Nera Rivermouth over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the cards for our local stretch over the next couple of weeks.
Honestly, it’s a pretty flat and frustrating run ahead. We’ve got a big gap of nothing special to start with. The first real chance of anything surfable doesn’t show up until Tuesday the 25th of August, and even then it’s not exactly firing.
For a beginner-friendly wave that’s been inconsistent and only pops off now and then, Nera Rivermouth is the only game in town. The water temp is about average for this time of year, nothing to write home about. The first glimmer of hope comes on Tuesday morning, the 25th, with a clean, 3ft SSW groundswell. The swell energy reads moderate (373) but it’s a long period of 16 seconds, which means better-shaped waves at this river mouth setup. The light offshore wind off the land will keep it glassy, but by the afternoon the wind swings cross-shore and messes it up, so it’s a real early-morning window. Crowds are possible here, so don’t be surprised to see a few other frothers out.
Wednesday the 26th and Thursday the 27th offer more of the same, but with a twist. Early Wednesday, we get a glassy 3ft SSW swell (287 energy) and the wind is dead calm, which is a major positive for clean conditions. That’s about as good as it gets this week. Thursday morning is also clean with a 3ft swell (305 energy) but the wind is cross-offshore, still very surfable.
After that, it tails off. Saturday the 29th sees a bump of 4ft SSW swell (265 energy) and clean cross-off winds, which is okay, but nothing to get the heart racing. The next week looks grim until Tuesday the 1st of September, when a late-afternoon pulse shows up. It’s a solid 6ft SSW groundswell (1621 energy – strong) with a very long 17-second period. That’s big for a river mouth and combined with a light cross-onshore wind, it’s going to be lumpy. This one will have plenty of power but messy conditions.
So, the standout here is that Wednesday the 26th of August morning session. It’s not a massive swell, but that glassy calm and clean 3ft wave at the river mouth will be the most user-friendly wave of the entire period. If you can get out there, that’s your best bet. The rest is mostly small, weak energy or blown out.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Thu morning, min 17°C on Wed night). Winds decreasing (fresh winds from the SE on Tue night, light winds from the ENE by Thu night). | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Sun afternoon, min 18°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 14 | SSW 14 | SSW 13 | SSW 12 | SSE 9 | SSW 15 | SSW 14 | SE 8 | SE 8 | SW 14 | SSE 11 | SSE 6 | SSE 7 | SE 7 | SE 7 | SSE 7 | SSW 18 | SSW 20 | SSW 18 |
Wave Graph  | |||||||||||||||||||
 kJ | 293 | 207 | 135 | 85 | 0 | 88 | 38 | 0 | 0 | 8 | 0 | 41 | 0 | 0 | 0 | 0 | 32 | 38 | 180 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-off | cross-off | cross | off | cross-off | cross-off | cross-off | cross | cross | off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 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 | 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 | |||||||
 |  | | |  | |  | | | | | | | | | | | | | |
 | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — |
 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 20 | 19 | 21 | 21 | 20 | 20 | 21 | 20 | 21 | 22 | 21 | 23 | 24 | 22 | 24 | 24 | 22 |
Feels °C | 12 | 15 | 14 | 14 | 18 | 17 | 19 | 17 | 18 | 18 | 19 | 19 | 21 | 23 | 24 | 22 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | S 11 | SSW 11 | SSW 13 | SSE 10 | SSE 9 | SSW 15 | S 10 | SSE 9 | SSE 8 | SSE 12 | S 10 | SE 10 | SSE 7 | SE 7 | SSE 7 | SSE 7 | SSE 9 | SSE 7 | SSW 18 |
| kJ | 573 | 121 | 135 | 263 | 106 | 88 | 273 | 116 | 120 | 177 | 67 | 46 | 40 | 56 | 66 | 34 | 52 | 18 | 180 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | S 10 | SSW 12 | S 9 | SSW 12 | SSW 14 | S 10 | S 10 | S 10 | SSE 11 | SSW 9 | S 9 | S 11 | SE 9 | SE 9 | S 9 | SE 10 | SSE 6 |
| kJ | 293 | 207 | 56 | 85 | 60 | 26 | 38 | 98 | 73 | 70 | 76 | 28 | 24 | 37 | 14 | 13 | 6 | 15 | 16 |
Swell 3 Height (m) Direction Period (s) | SSE 12 | S 22 | SW 20 | S 10 | SSW 12 | SE 10 | S 18 | SSE 14 | SE 14 | SW 14 | S 13 | S 12 | S 11 | S 16 | S 10 | S 10 | SSW 18 | SSW 20 | SSE 9 |
| kJ | 113 | 9 | 16 | 47 | 47 | 23 | 6 | 20 | 50 | 8 | 13 | 12 | 10 | 5 | 17 | 17 | 32 | 38 | 8 |
Wind waves Height (m) Direction Period (s) | SSE 12 | SSE 8 | SSE 8 | SSE 10 | — | SSE 8 | SE 9 | SE 8 | SE 8 | — | — | SSE 6 | — | SE 7 | SE 7 | — | — | SE 7 | — |
| kJ | 1203 | 244 | 306 | 532 | — | 184 | 212 | 306 | 373 | — | — | 41 | — | 121 | 169 | — | — | 65 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1361 | 1297 | 1297 | 1 | 1 | 1361 | 1 | 1271 | 1271 | 1 | 38 | 1329 | 1 | 1 | 1 | 1 | 1 | 1 | 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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