Devonport Rivermouth Surf Break

Lat Long: 41.16° S 146.36° E

Devonport Rivermouth Surf Forecast and Surf Report

Issued: 9 am 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Devonport Rivermouth sea temperature is
12.8°C
0.5° 

Devonport Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Devonport Rivermouth surf forecast from 29 Aug 2026:

  • Best quality surf: Thursday 3 Sep, 10PM (local time) - 1.5ft (0.4m), 14s period, NW swell with cross-offshore winds.
  • Most powerful swell: Saturday 5 Sep, 1AM (local time) - 10ft (3.0m), 8s period, NNW swell with 1,020 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 10PM (local time) - 1.5ft (0.4m), 14s period with NW swell.

Best Forecast Surf Conditions for Devonport Rivermouth this week:

The surf forecast for Devonport Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 03) at 10PM. The primary swell is predicted to be 0.4m and 14s period with a secondary swell of 0.9m and 6s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Devonport Rivermouth in the next 16 days are 3.0m 8s and forecast to arrive on Saturday (Sep 05) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Saturday (Sep 05) at 7AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Thu 3rd Sep)1.5ft (0.4m) 14s
Best Surf10PM (Thu 3rd Sep)1.5ft (0.4m) 14s
Most Powerful 1AM (Sat 5th Sep)10ft (3.0m) 8s

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


The Lowdown

Right, let’s have a look at what’s on the cards for Devonport Rivermouth over the next couple of weeks.

Straight up, I’ve gotta be honest with ya – it’s a lean run. The whole 16-day window is a bit of a struggle, with very little to get excited about. There’s a long gap of nothing but flat, poor conditions from the start right through until the end of the first week.

Saturday the 29th kicks off with a tiny 1ft NW groundswell, but it’s just too weak and the wind is a cross-off at 12 mph. The combined energy is a paltry 36, and the word from the water is “poor surf conditions” – it’s really not worth the paddle. That theme carries on for days, with the swell barely flickering to life and a lot of cross-shore wind messing things up.

We finally see a bit of juice come Sunday the 6th of September. The morning brings a 10ft swell from the NNW, with a combined energy of 858 – that's proper strong. But, and it’s a big but, it’s a short period swell (7 seconds) and the wind is a light cross-on. For a point/river break like this, that size is expert territory, and the onshore wind will make it lumpy. It’s a “marginal” call at best.

Then, on Monday the 7th of September, there’s a flicker of hope. After some morning rain and a weak onshore wind, the afternoon turns it around. We get a clean 3ft swell from the NW with a 16-second period – that’s proper long-period groundswell. The wind switches to a light offshore from the SW at 6 mph, and the combined energy is 386, so there's some grunt. The forecast says “expect good surf conditions.” For this spot, that long-period NW swell and clean offshore wind will make the point work nicely. It won’t be big, but it’ll be clean and lined up – a rare highlight in a pretty bleak outlook. Perfect for a longboard or a fun shape.

After that, it’s back to the doldrums. The second week is mostly small, weak, and messy with persistent onshore or cross-shore wind. Thursday the 10th has a 6ft swell, but it’s cross-shore and choppy. By the end of the run, we’re back to tiny, poor waves.

So, if you’re desperate for a surf this fortnight, don’t hold your breath. The standout – the only real one – is Monday afternoon, the 7th of September, at Devonport Rivermouth. Small, clean, long-period groundswell with a glassy offshore wind. That’s your window. It’s likely to be quiet, so you might have it to yourself.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Sun morning, min 7°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Tue night. Very mild (max 14°C on Thu morning, min 8°C on Tue night). Winds increasing (light winds from the NW on Tue morning, fresh winds from the WNW by Wed night).

Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
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
1
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
NW
15
1
WNW
5
0.1
NW
13
0.7
WNW
5
1.2
WNW
5
0.1
W
18
0.1
N
21
1
WNW
5
0.3
NW
17
0.2
NNW
16
1.3
NNW
6
1.9
NW
7
1.1
NW
6
1.4
NW
6
2
NW
7
1.5
NW
7
1.2
NW
6
0.4
NW
14
0.4
NW
15
1.3
NNW
6
3
NNW
8
Wave Graph
Metric surfscale
Energy kJ
33
54
7
23
69
7
9
46
47
24
104
405
85
122
342
222
123
70
84
105
1020
Wind (km/h)
20
WSW
20
W
20
WSW
10
W
20
W
15
WSW
15
W
20
WNW
5
WSW
10
NW
25
NW
15
W
20
W
25
WNW
30
WNW
25
W
25
W
15
W
20
NW
25
NW
40
NW
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross
cross
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-on
cross
cross-on
High Tide
11:55AM2.81m
00:05AM2.81m
12:46PM2.87m
1:04AM2.89m
1:35PM2.97m
2:00AM3.00m
2:21PM3.08m
2:53AM3.13m
3:07PM3.19m
3:44AM3.23m
3:52PM3.30m
4:34AM3.31m
4:38PM3.37m
Low Tide
6:00PM1.27m
6:26AM0.99m
6:58PM1.13m
7:23AM0.96m
7:52PM0.95m
8:15AM0.92m
8:42PM0.76m
9:05AM0.88m
9:30PM0.58m
9:52AM0.86m
10:17PM0.44m
10:38AM0.86m
11:04PM0.36m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
light rain
rain showers
part cloud
part cloud
rain showers
clear
clear
part cloud
rain showers
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:45
6:43
6:41
6:39
6:39
6:37
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:46
5:47
5:49
5:50
5:51
5:52
 mm
1
3
2
2
2
10
Temp °C
15
15
11
18
17
9
16
17
9
13
13
12
13
12
12
14
14
10
13
14
13
Feels °C
11
10
7
14
12
5
11
12
6
9
8
7
7
7
6
8
8
5
9
9
6
  • 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 Devonport Rivermouth Surf forecast

The above surf forecast table for Devonport Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Devonport Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Devonport 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 (Devonport 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 Devonport 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.

Devonport Rivermouth is 5 km (3 miles) from Devonport. If you plan a holiday in North Coast of Tasmania, look for hotels and other accommodation in Devonport. Devonport has rooms for a wide range of budgets as well as car hire and transport links.

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