Surf Forecasts:
Nera Rivermouth surf forecast from 20 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 5AM (local time) - 2.5ft (0.8m), 17s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 26 Aug, 2AM (local time) - 4.5ft (1.3m), 15s period, SSW swell with 786 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 8PM (local time) - 1.5ft (0.4m), 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 0.4m 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 Wednesday (Aug 26) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 8s period and expected on Friday (Aug 21) at 11AM.
| Wave Type | Time (+11) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 24th Aug) | 1.5ft (0.4m) 19s |
| Best Surf | 5AM (Tue 25th Aug) | 2.5ft (0.8m) 17s |
| Most Powerful | 2AM (Wed 26th Aug) | 4.5ft (1.3m) 15s |
Table - best surf conditions forecast for Nera Rivermouth over the next 16 days.
The Lowdown
Alright, mate, let's talk about Nera Rivermouth (Nera-Rivermouth). We're looking at a 16-day window starting Thursday, 20th of August, and it kicks off with a dud—barely a ripple. A tiny 0.4m cross-off swell that's not worth your time. Water temp is about 73°F, right on average for the season, but the surf is dead.
There's a long quiet spell of several days with nothing, until Tuesday, 25th of August finally shows some life. That morning, we get a 1.4m groundswell from the SSW with a 16-second period and a light cross-off breeze. Combined energy is solid at 938—real punch for a river-mouth break. The afternoon is the standout: wind shifts to a light offshore out of the ENE, the swell stays at 1.4m, period at 15 seconds, and the surface is clean.
Wednesday, 26th of August keeps it going: 1.2m in the morning, then 1.1m in the afternoon with that same clean offshore breeze. Energy is strong at 573 and 446. This is a proper long-period groundswell, which will hold up well at a river-mouth setup.
A few things: this break is inconsistent, so when it's on, you better be there. Crowds can be a factor on the good days—it's a "sometimes" kind of spot. The swell is coming from SSW, not its ideal SW, but the long period will keep the waves from going too straight and give you nice, lined-up walls. The 1.4m is about 5 feet, good for intermediate surfers—not too big, but with that long period, you'll feel the power and the lulls between sets.
Thursday, 27th of August drops to 0.9m and "ordinary." Morning offshore flow from the NE is nice, but the energy is moderate (314) and the quality is slipping.
Then from Friday, 28th of August onward, it's a mess: onshore winds, small chop, and by early September, it's flat and cross-choppy. The very end of the window on the 3rd and 4th shows tiny, short-period slop—not a paddle's worth.
Your best bet is Tuesday the 25th and Wednesday the 26th. That's where the magic is. Rest of the window is a rest day. Rusty.
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Warm (max 24°C on Sun afternoon, min 19°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Mon morning, min 19°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 13 | SSE 7 | SW 14 | SSE 10 | SE 8 | SSE 10 | SSE 9 | SSE 9 | SE 7 | SE 6 | SSE 6 | SSW 18 | SSW 16 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 38 | 16 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 39 | 180 | 754 | 687 | 786 | 498 | 400 | 297 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | off | off |
High Tide | 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 | 5:07PM1.08m | 4:01AM1.10m | 5:36PM1.12m | 4:41AM1.13m | ||||||
Low Tide | 7:01AM0.36m | 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 | |||||||
 |  | |  |  | | | |  | | | | | | | | | | | |
 | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — |
 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 21 | 21 | 20 | 22 | 23 | 21 | 23 | 24 | 22 | 24 | 24 | 22 | 24 | 24 | 22 | 23 | 24 | 22 |
Feels °C | 18 | 19 | 17 | 18 | 21 | 21 | 20 | 23 | 24 | 22 | 24 | 23 | 22 | 25 | 23 | 22 | 22 | 23 | 20 |
Swell 1 Height (m) Direction Period (s) | S 10 | SSE 8 | S 10 | SSE 12 | SSE 10 | SSE 9 | SSE 10 | SSE 9 | SSE 9 | SE 7 | SSE 6 | SE 10 | SSW 18 | SSW 16 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
| kJ | 262 | 150 | 71 | 171 | 97 | 113 | 81 | 53 | 53 | 23 | 16 | 15 | 180 | 754 | 687 | 786 | 498 | 400 | 297 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | S 10 | SE 13 | S 10 | S 10 | SSW 9 | S 9 | S 11 | S 10 | S 10 | SE 9 | SSW 17 | SSW 14 | SSE 7 | SE 6 | SSE 6 | SE 6 | SE 6 | SE 6 |
| kJ | 38 | 98 | 46 | 66 | 47 | 28 | 23 | 20 | 18 | 7 | 13 | 27 | 107 | 17 | 20 | 15 | 9 | 9 | 10 |
Swell 3 Height (m) Direction Period (s) | S 18 | SSW 13 | SSE 11 | SW 14 | S 13 | S 12 | S 12 | S 16 | S 16 | SE 9 | S 9 | SSW 20 | SSE 6 | SSW 12 | SE 14 | SE 13 | SE 13 | SE 13 | — |
| kJ | 6 | 16 | 11 | 8 | 13 | 3 | 11 | 5 | 5 | 13 | 6 | 39 | 20 | 90 | 7 | 7 | 7 | 7 | — |
Wind waves Height (m) Direction Period (s) | — | SE 8 | SSE 7 | — | — | SE 8 | — | — | — | — | SE 6 | SSE 6 | — | — | — | — | — | — | — |
| kJ | — | 367 | 111 | — | — | 227 | — | — | — | — | 49 | 27 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 1 | 1297 | 1 | 1 | 1 | 1 | 1 | 1 | 37 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 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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