Surf Forecasts:
Nera Rivermouth surf forecast from 18 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, 5AM (local time) - 3.5ft (1.1m), 16s period, SSW swell with 597 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 8AM (local time) - 3ft (0.9m), 14s 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 Wednesday (Aug 19) at 8AM. The primary swell is predicted to be 0.9m and 14s 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 1.1m 16s 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 2.2m 12s period and expected on Wednesday (Aug 19) at 2AM.
| Wave Type | Time (+11) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 19th Aug) | 3ft (0.9m) 14s |
| Best Surf | 2AM (Tue 25th Aug) | 3ft (0.9m) 17s |
| Most Powerful | 5AM (Tue 25th Aug) | 3.5ft (1.1m) 16s |
Table - best surf conditions forecast for Nera Rivermouth over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let's be honest, looking at Nera Rivermouth for the next couple of weeks, it's a real struggle. We’ve got a long stretch of nothing happening, so don't bother paddling out for a while.
The first real chance of getting wet doesn't come until Monday, the 24th of August. And even then, it's just a tiny pulse. The water temp is sitting right around average for this time of year, which is fine.
The only real window to watch is Tuesday, the 25th of August. The morning is the standout. We’ll see a 4ft SSW groundswell rolling in, with a long 15-second period. That kind of period gives the waves some real shape and energy, but at a river mouth, it can sometimes make things a bit too straight. The magic is the wind – glassy, dead calm. That’s a rare treat and will make the surface like a mirror. The combined energy is sitting at a solid 528 (moderate wave energy), which is the best we’ll see. The afternoon will still be surfable, with a clean cross-off breeze but a slightly shorter period. It’s an inconsistent spot on a good day, so don't expect a lot of waves, but with those conditions, the ones that come through will be worth the wait.
After that Tuesday, it’s back to the doldrums. The wind turns onshore and the swell drops off a cliff. There’s a very small pulse on the 2nd of September, but it’s a short-period, messy windswell with a cross-shore wind, so it’s not going to be any good.
So, to sum it up: the next week and a half is a write-off. The only real hope is next Tuesday morning, the 25th. Get on it if you can, because that’s the only game in town.
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 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 | SSE 9 | SSW 15 | SSW 14 | SE 8 | SE 8 | SW 14 | SSE 11 | SSE 6 | SSE 7 | SSE 9 | SE 8 | SSE 7 | SW 18 | SSW 20 | SSW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 505 | 428 | 293 | 207 | 135 | 155 | 0 | 88 | 38 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 151 | 528 |
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 | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | 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 | 20 | 22 | 20 | 22 | 23 | 21 | 23 | 23 | 21 | 24 | 23 | 22 |
Feels °C | 14 | 13 | 13 | 16 | 15 | 14 | 19 | 17 | 18 | 18 | 20 | 19 | 21 | 22 | 20 | 22 | 21 | 20 | 24 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | S 13 | SSW 15 | S 11 | SSW 11 | SSW 13 | SSE 10 | SSE 9 | S 9 | S 10 | SSE 9 | SSE 7 | S 10 | SSE 11 | SE 10 | SSE 7 | SSE 9 | SE 9 | SSE 7 | SSE 7 | SSE 7 | SSW 17 |
| kJ | 1308 | 428 | 573 | 156 | 135 | 253 | 106 | 109 | 240 | 135 | 79 | 90 | 76 | 46 | 61 | 52 | 81 | 36 | 37 | 30 | 528 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | — | SSW 14 | SSW 14 | SW 20 | SSW 12 | S 8 | SSW 15 | SSW 14 | S 10 | S 10 | SE 12 | S 10 | SSW 9 | S 9 | S 11 | S 10 | S 10 | S 9 | SSW 20 | SE 6 |
| kJ | 505 | — | 293 | 207 | 16 | 155 | 71 | 88 | 38 | 96 | 71 | 110 | 47 | 28 | 14 | 37 | 18 | 16 | 6 | 151 | 19 |
Swell 3 Height (m) Direction Period (s) | — | — | SSE 12 | S 22 | SW 20 | SSW 18 | SSW 12 | SSW 12 | S 18 | SSE 14 | SE 14 | SW 14 | S 13 | S 12 | S 11 | S 16 | SE 13 | SE 9 | SW 18 | SSE 10 | SE 10 |
| kJ | — | — | 113 | 9 | 15 | 63 | 47 | 27 | 6 | 20 | 46 | 8 | 13 | 3 | 10 | 5 | 7 | 14 | 13 | 10 | 23 |
Wind waves Height (m) Direction Period (s) | SSE 13 | S 12 | SSE 12 | SSE 10 | SSE 10 | SE 10 | SSE 9 | SE 9 | — | SE 8 | SE 8 | — | — | SSE 6 | — | — | SE 8 | — | — | SE 7 | — |
| kJ | 1828 | 1256 | 1224 | 325 | 607 | 480 | 339 | 81 | — | 330 | 250 | — | — | 67 | — | — | 183 | — | — | 128 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1361 | 1403 | 1361 | 1297 | 1338 | 0 | 1 | 1361 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 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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