
Surf Forecasts:
Nera Rivermouth surf forecast from 15 Sep 2026:
- Best quality surf: Monday 21 Sep, 2AM (local time) - 6ft (1.8m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Sunday 20 Sep, 5AM (local time) - 7ft (2.1m), 16s period, SSW swell with 2,189 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 11PM (local time) - 3.5ft (1.0m), 13s 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 Tuesday (Sep 15) at 11PM. The primary swell is predicted to be 1.0m and 13s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Nera Rivermouth in the next 16 days are 2.1m 16s and forecast to arrive on Sunday (Sep 20) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 14s period and expected on Tuesday (Sep 15) at 5PM.
| Wave Type | Time (+11) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 15th Sep) | 3.5ft (1.0m) 13s |
| Best Surf | 2AM (Mon 21st Sep) | 6ft (1.8m) 14s |
| Most Powerful | 5AM (Sun 20th Sep) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Nera Rivermouth over the next 16 days.
The Lowdown
Alright, Rusty here. Let's chew the fat on what the Nera Rivermouth has in store.
Right off the bat, it's a tough start. The first couple of days, Tuesday and Wednesday, are a total write-off. No energy in the water at all. We're talkin' flat spells and cross-breezes that are just messin' with any hope of a wave. You'd be better off waxin' your board and just starin' at it.
Things start to get a bit more interesting come Friday the 18th. The ocean wakes up with a solid 8 ft SSW swell rollin' in, with a moderate 12-second period. The combined energy is pumpin', but – and it's a big but – that's paired with a fresh 19 mph cross-shore wind. That's gonna chop it up and make it lumpy. This is decent-sized, powerful stuff, but with that wind, it's gonna be a battle. For the experienced crew only, if you're feelin' tough.
Saturday the 19th morning is a bit of a tease. The swell drops to a more manageable 6 ft from the SSW, with a bit of a longer period at 11 seconds. The energy is still strong. The wind backs off to a moderate 12 mph cross-shore, which is better, but still not clean. The forecast says it's marginal, likely due to the wind and tide. It's the best we've seen so far, but it's not a classic.
Sunday the 20th and Monday the 21st keep the swell pumping, holding around 6 ft to 7 ft from the SSW. The energy stays up, so there's plenty of push. The wind, though, stays a stubborn cross-onshore breeze from the SSE. It's surfable, but you'll be workin' for every wave through a choppy face.
Now, Tuesday the 22nd morning is where my ears prick up. We've got a solid 6 ft SSW swell with a proper groundswell period of 17 seconds. That's long-period energy, meaning better-shaped waves and more push. The combined energy is strong. The wind is a light 9 mph cross-shore from the SSE – that's gentle, which is a major positive for clean conditions. This is the standout window. The water temp is sittin' around 73°F, which is pretty normal for this time of year. Nera Rivermouth is an inconsistent spot, and it's a river-and-beach setup, so that long-period groundswell might make it a bit straight, but with that glassy wind, it could be the best chance for a proper session. Crowds can show up here sometimes, so get in early.
After that, it's a slow fade. The rest of the week and into the next sees the swell dropping off again. By the 25th and 26th, we're back to tiny, weak waves. The 24th has a bit of size again (6 ft to 6 ft), but with a fresh 22 mph cross-wind, it's just gonna be a messy, blown-out affair. Honestly, for that second week, there's not much to get excited about.
The bottom line? Don't bother with the first few days. The real window is Tuesday the 22nd morning, with that long-period SSW swell and light winds. That's your best shot. The rest is a lot of waitin' and hopin'.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Wed night. Warm (max 22°C on Tue morning, min 18°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the SSW by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sat morning, min 18°C on Fri night). Winds decreasing (fresh winds from the SSE on Fri morning, light winds from the ESE by Sun night). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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) | S 14 | S 14 | S 13 | S 12 | SSW 15 | SSE 5 | SW 13 | SSW 18 | SSW 8 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 19 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 15 | SSW 14 | SSW 14 |
Wave Graph | |||||||||||||||||||||
0 | 0 | 0 | 0 | 21 | 17 | 7 | 30 | 384 | 1660 | 1776 | 1164 | 731 | 387 | 1500 | 1751 | 1484 | 1277 | 1174 | 1095 | 926 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-on | cross | cross | on | on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-off | cross-on | cross | cross-off |
High Tide | 8:49AM1.05m | 8:27PM1.13m | 9:48AM0.99m | 9:04PM1.06m | 10:57AM0.95m | 9:48PM1.00m | 12:16PM0.93m | 10:46PM0.96m | 1:34PM0.94m | 11:55PM0.94m | 2:35PM0.97m | 1:03AM0.96m | 3:17PM1.02m | 2:02AM0.99m | |||||||
Low Tide | 2:23PM0.54m | 3:09AM0.31m | 3:09PM0.63m | 4:02AM0.34m | 4:06PM0.70m | 5:04AM0.36m | 5:23PM0.74m | 6:13AM0.37m | 6:49PM0.75m | 7:19AM0.35m | 7:58PM0.72m | 8:13AM0.32m | 8:49PM0.68m | ||||||||
5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | |
— | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | 2 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 20 | 21 | 22 | 20 | 21 | 21 | 19 | 20 | 20 | 19 | 21 | 20 | 19 | 21 | 21 | 20 | 21 | 21 | 20 |
Feels °C | 19 | 19 | 20 | 20 | 19 | 18 | 20 | 18 | 13 | 13 | 13 | 14 | 16 | 15 | 17 | 18 | 18 | 18 | 19 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | S 12 | S 12 | S 12 | S 10 | SSW 18 | SSW 16 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 15 | SSW 14 | SSW 14 |
951 | 769 | 591 | 295 | 180 | 172 | 94 | 30 | 102 | 1660 | 1776 | 1164 | 731 | 599 | 1500 | 1751 | 1484 | 1277 | 1174 | 1095 | 926 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SSW 15 | S 11 | SW 13 | S 13 | S 14 | SSW 14 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 10 | SE 13 | SSE 13 | SSE 12 | SSE 12 | SE 12 | S 19 |
— | — | — | — | 21 | 21 | 7 | 3 | 4 | 293 | 188 | 336 | 273 | 387 | 324 | 7 | 17 | 14 | 14 | 5 | 721 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | S 10 | SW 11 | S 12 | — | SE 14 | SE 13 | SE 13 | SE 12 | SSW 15 | SE 15 | SE 10 | SSE 10 | — | — | — | SE 12 |
— | — | — | — | — | 2 | 5 | 3 | — | 7 | 7 | 7 | 6 | 196 | 8 | 4 | 9 | — | — | — | 6 | |
Wind waves Height (m) Direction Period (s) | — | S 14 | — | — | SSE 4 | SSE 5 | SW 3 | SSW 4 | SSW 8 | — | — | — | — | — | — | — | — | — | — | — | — |
— | 960 | — | — | 10 | 17 | 1 | 24 | 384 | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 858 | 1297 | 1 | 38 | 864 | 38 | 543 | 550 | 550 | 1318 | 1361 | 1338 | 1291 | 1404 | 38 | 1338 | 1357 | 0 | 38 | 1585 | 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.










