Nera Rivermouth Surf Break

Lat Long: 21.62° S 165.46° E

Nera Rivermouth Surf Forecast and Surf Report

Issued: 4 am 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nera Rivermouth sea temperature is
22.6° C
0.1° 

Nera Rivermouth surf forecast from 10 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 5AM (local time) - 3ft (0.9m), 21s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 16 Aug, 11AM (local time) - 4ft (1.2m), 19s period, SSW swell with 1,055 kJ wave energy.
  • Next surfable swell (1★+): Sunday 16 Aug, 2AM (local time) - 5ft (1.6m), 11s 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 Sunday (Aug 16) at 2AM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 0.5m and 22s. 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 1.2m 19s and forecast to arrive on Sunday (Aug 16) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 10s period and expected on Sunday (Aug 16) at 5PM.

Wave TypeTime (+11) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 16th Aug)5ft (1.6m) 11s
Best Surf 5AM (Sun 16th Aug)3ft (0.9m) 21s
Most Powerful11AM (Sun 16th Aug)4ft (1.2m) 19s

Table - best surf conditions forecast for Nera Rivermouth over the next 16 days.


The Lowdown

G’day, it’s Rusty here. Let’s be straight with you: the next 16 days are a real mixed bag, and honestly, there’s not a whole lot to get worked up about. The start of the period is dead flat, and it takes a while for any real energy to show up. The swell that does eventually arrive is coming from the SSW, which is right in the optimum direction for the Nera Rivermouth, but the winds are going to mess with it for most of the run. We’re looking at a long stretch of waiting before anything even gets close to being worth a paddle.

Right off the bat, Monday the 10th and Tuesday the 11th are basically a write-off. The swell is tiny, around 0.3ft to 0.7ft, with weak energy readings in the 16 to 58 range. There’s a bit of glassy and cross-off wind early on, but there’s just nothing to ride. The water temp is 73°, which is pretty much spot on for this time of year, so you won’t need the thickest suit.

We go through the middle of the week with the same story. Wednesday and Thursday have minimal swell. Thursday afternoon sees the energy pick up slightly to 153, but that’s still weak, and the onshore wind at 12 mph will chop it up anyway. It’s not until Friday the 14th that we finally see some proper swell start to fill in, with 5ft from the SSW. The combined energy jumps to 546, which is moderate. But the wind swings cross-onshore at 12 to 16 mph, turning it into a messy, choppy mess. It’s got some push, but it’s not clean.

Saturday the 15th offers a bit more size, hitting 5ft, with energy building to 626. But again, a cross-shore wind keeps it lumpy and hard to read. You might find a few, but it’s work, not fun. Sunday the 16th is where it gets a little interesting. The energy really kicks in, with readings of 1487 in the morning and 1015 in the afternoon. That’s strong wave energy, and the swell is around 4 to 4ft, with a long 18 to 19-second period. This is a proper groundswell, ideal for a river mouth like this. But the cross-shore winds are still there, holding it back from being truly clean. It’s the standout of the first week, but it’s marginal.

Monday the 17th stays active with around 3ft of swell and strong energy, but a fresh cross-shore wind at 19 mph kills the vibe. It’s lumpy and blown out. Then we get a bit of a reset. Tuesday the 18th dawns with a light cross-offshore breeze, and the swell is still a solid 4ft with a 15-second period. The energy is strong at 571, and with that clean cross-off wind, this looks like the best session of the whole period. It’s not huge, but it’s clean and lined up. This is your window. The river mouth should be holding shape, and the offshore wind will keep the faces tidy. That’s the one to be on.

After that, it fades fast. Wednesday the 19th drops off to 2ft, and the energy falls away. From the 20th through the 23rd, it’s back to tiny, weak surf, with the energy reading basically zero. The 24th is flat, and the 25th only shows a glimmer of hope with 1ft and a good long 19-second period, but the energy is weak. It’s another long lull to ride out.

So, for the whole 16-day stretch, the only real standouts are Tuesday the 18th, and to a lesser extent, Sunday the 16th. The rest is a waiting game. Nera Rivermouth is an inconsistent spot, and this run proves it. It’s sheltered and rated as a beginner spot, but the long period swells are prone to breaking too straight at a beach/river setup. The bigger days with 5ft+ might be pushing it for beginners, especially with the chop. On the 16th and 18th, the cross-off winds are the saving grace. Without them, it’s just a frustrating week. Stay patient, and keep your eye on that Tuesday.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Mon afternoon, min 18°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Thu afternoon. Warm (max 22°C on Thu morning, min 18°C on Sat night). Wind will be generally light.

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
SSW
18
0.2
SSW
18
0.2
SSW
16
0.2
SSW
8
0.2
SSW
15
0.2
SSW
7
0.2
SSW
19
0.2
SSW
19
0.2
SSW
18
0.4
SW
11
0.6
SW
10
1
SW
12
1.4
SSW
11
1.4
SSW
9
1.2
SSW
9
1.3
SSW
9
1.5
SSW
10
1.6
SSW
11
1.2
SSW
19
1.3
SSW
18
1.2
SSW
16
Wave Graph
Metric surfscale
Energy kJ
31
30
26
10
21
8
37
36
30
30
63
259
425
313
197
255
437
586
1055
1015
706
Wind (km/h)
10
ESE
15
SE
5
NE
5
W
10
WSW
5
NNE
5
SW
10
S
5
NNE
10
WSW
15
SW
15
SSW
25
S
20
S
10
SSE
20
SSE
20
SSE
10
ESE
20
SE
20
SSE
10
ESE
Wind State
cross-off
cross
off
glassy
on
glassy
glassy
cross-on
glassy
on
on
on
cross-on
cross-on
cross-on
cross
cross
cross-off
cross
cross
cross-off
High Tide
4:44PM1.16m
3:42AM1.23m
5:31PM1.22m
4:37AM1.25m
6:15PM1.27m
5:31AM1.26m
6:56PM1.29m
6:23AM1.23m
7:35PM1.29m
7:15AM1.18m
8:12PM1.27m
8:09AM1.12m
8:49PM1.23m
Low Tide
9:47AM0.04m
10:05PM0.62m
10:37AM-0.01m
10:58PM0.57m
11:24AM-0.03m
11:48PM0.52m
12:08PM-0.01m
00:37AM0.48m
12:51PM0.06m
1:25AM0.44m
1:33PM0.16m
2:14AM0.41m
2:15PM0.28m
3:04AM0.39m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
rain showers
part cloud
part cloud
clear
clear
clear
rain showers
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:24
6:24
6:22
6:22
6:22
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:40
5:42
5:42
5:42
5:43
5:43
5:43
 mm
1
2
1
1
Temp °C
21
22
20
21
22
20
22
22
20
22
22
20
20
20
19
20
21
19
21
21
19
Feels °C
20
20
19
22
21
22
23
21
21
22
21
18
16
16
15
17
17
17
17
16
16
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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