Surf Forecasts:
Nera Rivermouth surf forecast from 25 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 8PM (local time) - 4.5ft (1.3m), 14s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 1 Sep, 2PM (local time) - 7.5ft (2.3m), 17s period, SSW swell with 3,128 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 8PM (local time) - 4.5ft (1.3m), 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 Tuesday (Aug 25) at 8PM. The primary swell is predicted to be 1.3m and 14s 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 2.3m 17s and forecast to arrive on Tuesday (Sep 01) 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 11s period and expected on Monday (Aug 31) at 5PM.
| Wave Type | Time (+11) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Tue 25th Aug) | 4.5ft (1.3m) 14s |
| Best Surf | 8PM (Tue 25th Aug) | 4.5ft (1.3m) 14s |
| Most Powerful | 2PM (Tue 1st Sep) | 7.5ft (2.3m) 17s |
Table - best surf conditions forecast for Nera Rivermouth over the next 16 days.
The Lowdown
Alright mates, Rusty here. Let’s break down what’s in store at Nera Rivermouth. It’s not a non-stop firing stretch, but the first few days have some real clean, fun-sized waves before the wind turns nasty.
Starting Tuesday the 25th, we’ve got a clean 4ft SSW groundswell with a long 15-second period. The energy is moderate (746), and a light SE cross-off breeze is keeping it tidy. Water temp is about 73°, which is normal for the season. Wednesday morning the 26th is similar—4ft SSW at 15 seconds, moderate energy (573), and that same light cross-off wind. Wednesday afternoon stays okay too. Thursday morning the 27th is the real gem: the wind goes glassy offshore from the ENE, with a 3ft SSW swell, still a long 15 seconds. That’s the cleanest wave of the early run, even if it’s a touch smaller. The energy is moderate (413). That’s the morning you want to paddle out.
The problem is, Nera Rivermouth is a sheltered, inconsistent spot, and it doesn’t handle bad wind well. After Thursday morning, the wind swings onshore and the quality plummets. From Friday the 28th through the end of the month, it’s mostly cross-onshore chop, gusty wind, and poor surf. The weekend is a total washout—Saturday and Sunday are lumpy and choppy, with onshore winds blowing 15 to 19 mph. Don’t bother.
Then Monday the 1st of September, things get interesting. A much bigger 7ft to 8ft SSW groundswell shows up, with an incredibly long 18-second period. The energy is very strong (3113). But the wind is still a cross-shore SE breeze at 16 to 19 mph, making it lumpy and messy. This is a big, powerful swell, over 8ft, so it’s expert-only territory, and the wind is going to make it look more like a kite session than a surf session. The setup is a river and beach, so that long-period groundswell might break too straight for the beach—better suited to a point or reef. If you’re a charger, there’s serious power, but it’s rough.
The second week is mostly flat and wind-affected. There’s a small chance on the 8th of September with a 4ft SSW swell at 17 seconds, but the wind is light cross-onshore, so it’s marginal. The 9th of September, though, looks promising but it’s a long way off. That Wednesday morning shows a clean 5ft SSW swell (16 seconds) with glassy, offshore ESE wind—very good conditions. The afternoon holds 5ft and clean too. That’s a solid session, but it’s over a week away, so keep it on the radar.
Bottom line: go Thursday morning the 27th for the cleanest, most fun waves. The 1st of September is for experts only, and the 9th is a long-range one to watch. The rest is mostly a write-off.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu afternoon. Warm (max 24°C on Thu morning, min 18°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sat morning. Warm (max 23°C on Fri morning, min 19°C on Fri night). Winds increasing (calm on Fri morning, fresh winds from the SSW by Sun afternoon). | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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 14 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | S 16 | SSW 15 | SSW 14 | SSW 12 | SSW 12 | SSW 12 | S 6 | SSW 15 | S 11 | SSW 20 |
Wave Graph | |||||||||||||||||||||
746 | 640 | 736 | 573 | 465 | 402 | 413 | 339 | 215 | 137 | 92 | 0 | 0 | 351 | 413 | 374 | 303 | 56 | 23 | 0 | 685 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | off | off | cross-off | cross-off | on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross |
High Tide | 5:07PM1.08m | 4:01AM1.10m | 5:36PM1.12m | 4:41AM1.13m | 6:04PM1.16m | 5:22AM1.14m | 6:32PM1.19m | 6:03AM1.14m | 7:00PM1.21m | 6:48AM1.12m | 7:30PM1.21m | 7:35AM1.08m | 8:01PM1.21m | ||||||||
Low Tide | 10:14AM0.20m | 10:31PM0.63m | 10:49AM0.17m | 11:08PM0.59m | 11:23AM0.16m | 11:44PM0.54m | 11:55AM0.17m | 00:20AM0.50m | 12:27PM0.21m | 00:58AM0.45m | 1:00PM0.27m | 1:38AM0.40m | 1:36PM0.35m | 2:21AM0.36m | |||||||
6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | |
mm | — | — | — | — | — | — | — | 1 | 1 | — | — | — | 1 | — | 3 | — | — | — | — | — | — |
Temp °C | 23 | 23 | 21 | 22 | 22 | 22 | 24 | 24 | 22 | 23 | 22 | 21 | 22 | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 20 |
Feels °C | 23 | 21 | 21 | 21 | 19 | 22 | 25 | 24 | 23 | 23 | 21 | 22 | 21 | 20 | 19 | 16 | 16 | 15 | 15 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | S 16 | SSW 15 | SSW 14 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | S 11 | S 11 |
746 | 640 | 736 | 573 | 465 | 402 | 413 | 339 | 215 | 137 | 92 | 181 | 395 | 351 | 413 | 374 | 303 | 217 | 158 | 890 | 573 | |
Swell 2 Height (m) Direction Period (s) | SE 7 | SE 5 | SSE 6 | SE 6 | — | SSE 6 | SE 6 | SE 6 | SE 12 | SSE 6 | SSW 16 | S 12 | SE 12 | SE 12 | S 20 | S 19 | SW 18 | SW 18 | S 13 | S 20 | SSW 20 |
16 | 23 | 24 | 9 | — | 16 | 9 | 9 | 6 | 3 | 51 | 72 | 6 | 6 | 8 | 7 | 13 | 12 | 32 | 8 | 685 | |
Swell 3 Height (m) Direction Period (s) | — | — | SE 13 | SE 13 | — | SE 14 | SE 13 | SE 13 | — | SE 13 | SE 13 | SE 13 | — | — | S 20 | S 19 | SE 15 | SE 14 | SSW 15 | SE 13 | — |
— | — | 7 | 7 | — | 8 | 7 | 7 | — | 7 | 7 | 7 | — | — | 8 | 7 | 8 | 8 | 23 | 7 | — | |
Wind waves Height (m) Direction Period (s) | — | SE 6 | — | — | SE 6 | — | — | SE 7 | — | — | SSE 13 | SE 8 | SE 8 | SSE 4 | SSE 4 | S 6 | S 6 | S 6 | S 7 | ESE 5 | S 11 |
— | 104 | — | — | 9 | — | — | 29 | — | — | 17 | 25 | 25 | 4 | 5 | 84 | 81 | 56 | 138 | 45 | 815 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 141 | 1360 | 38 | 1292 | 1292 | 543 | 543 | 1318 | 1362 | 1361 | 1361 | 1361 |
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.











