Devonport Rivermouth Surf Break

Lat Long: 41.16° S 146.36° E

Devonport Rivermouth Surf Forecast and Surf Report

Issued: 3 pm 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Devonport Rivermouth sea temperature is
12.8°C
0.4° 

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 4 Sep 2026:

  • Best quality surf: Saturday 5 Sep, 10PM (local time) - 5.5ft (1.7m), 8s period, NNW swell with glassy winds.
  • Most powerful swell: Saturday 5 Sep, 4PM (local time) - 6.5ft (2.0m), 7s period, NNW swell with 389 kJ wave energy.
  • Next surfable swell (1★+): Saturday 5 Sep, 10PM (local time) - 5.5ft (1.7m), 8s period with NNW 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 Saturday (Sep 05) at 10PM. The primary swell is predicted to be 1.7m and 8s period with a secondary swell of 0.4m and 6s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Devonport Rivermouth in the next 16 days are 2.0m 7s and forecast to arrive on Saturday (Sep 05) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Sep 09) at 7AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sat 5th Sep)5.5ft (1.7m) 8s
Best Surf10PM (Sat 5th Sep)5.5ft (1.7m) 8s
Most Powerful 4PM (Sat 5th Sep)6.5ft (2.0m) 7s

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


The Lowdown

Alright, Rusty here. Let's be honest, this is a tough one to write. We're looking at a 16-day window for Devonport Rivermouth, and honestly, for the vast majority of it, you'd be better off doing something else.

Right from the start, it's a struggle. For the first several days, we've got tiny, weak swell mixing with all kinds of wind issues. Friday the 4th sees a mere 2ft NW groundswell, but that 12 mph WNW cross-shore rips it to shreds. The energy is a paltry 238, and it's labeled as "poor surf conditions." That's the story for nearly the whole first week. Saturday morning the 5th jumps up to 5ft, but it's a messy N windswell with a short 6-second period and a nasty 16 mph onshore wind. The wave energy climbs to 427, but it's just a wall of chop.

We do get a few moments of clean conditions, like Sunday morning the 6th with glassy conditions, but the swell is a pathetic 2ft and the combined energy is a weak 55. Not worth paddling out for. The same goes for Monday morning with 2ft and glassy conditions. A clean 2ft wave is a tease, not a session.

The water temperature is sitting around 55°, which is about normal for the time of year.

The first glimmer of something slightly better doesn't show up until Wednesday afternoon the 9th. We get a clean 1.3ft NW groundswell with a very long 19-second period and 12 mph offshore SW winds. The energy hits a moderate 129. The call is "surfable waves but very ordinary conditions." It's not great, but it's the best of a very bad lot. This *exists* as an option for the desperate.

You get another small window Thursday morning the 10th, with light offshore winds and a 1.3ft NW groundswell (109 energy), but again, it's just "ordinary."

We then hit another dead zone with a massive gap of very little to nothing until the middle of the next week. The reliable, near-term forecast is a total bust.

The most hopeful spot in the whole 16 days is Tuesday morning, September 15th. We see a 4.5ft swell from the NNE, combined with a glassy, dead calm ocean. The combined energy is a moderate 126. The call is again "surfable waves but very ordinary conditions," but glassy conditions on a 4.5ft wave at a point/river break is about as good as it's going to get. This is the standout, but it's a long way out, so take it with a grain of salt. This would be for the experienced surfers who can find the clean lines on that long period swell. For beginners, it's a bit much. Crowds are "sometimes," so you might have some company.

Other than that, the forecasts for the rest of the period keep spitting out tiny swell and poor conditions. There is simply nothing to get excited about here for the foreseeable future.

Short Range Forecast

Heavy rain (total 25mm), heaviest during Sat morning. Very mild (max 15°C on Sun afternoon, min 9°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 14°C on Mon afternoon, min 4°C on Mon night). Wind will be generally light.

Fri
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
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
2
0
0
0
0
0
0
0
0
0
0
1
0
1
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)
0.6
NW
16
0.4
NW
16
1.5
N
6
2
NNW
7
1.5
NW
8
0.4
NW
10
0.3
NW
15
0.9
WNW
5
0.7
WNW
6
0.2
WNW
11
0.1
NW
21
0.1
NW
18
1.2
NW
5
1
WNW
5
0.3
NW
16
0.4
NW
19
0.4
NW
18
0.4
NW
18
0.4
NW
17
0.3
NW
16
Wave Graph
Metric surfscale
Energy kJ
167
91
160
389
311
28
34
41
31
12
17
13
62
51
40
129
112
109
100
41
Wind (km/h)
20
WNW
10
NNW
25
N
20
NW
15
SSW
5
SE
10
NNW
20
W
15
SW
15
WSW
10
SSW
15
W
25
WNW
20
WNW
20
SW
25
SW
15
SW
10
WSW
20
WSW
10
SSW
Wind State
cross
cross-on
cross-on
cross
off
glassy
cross-on
cross-off
cross-off
cross-off
off
cross-off
cross
cross
cross-off
off
cross-off
cross-off
cross-off
off
High Tide
4:38PM3.37m
5:25AM3.33m
5:25PM3.39m
6:16AM3.30m
6:14PM3.36m
7:10AM3.22m
7:08PM3.28m
8:07AM3.12m
8:08PM3.17m
9:09AM3.02m
9:15PM3.06m
10:13AM2.95m
10:27PM2.98m
Low Tide
11:04PM0.36m
11:25AM0.89m
11:52PM0.33m
12:13PM0.95m
00:43AM0.38m
1:04PM1.02m
1:37AM0.48m
2:00PM1.09m
2:36AM0.61m
3:03PM1.15m
3:41AM0.74m
4:14PM1.15m
part cloud
mod rain
rain showers
light rain
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:31
6:31
6:28
6:26
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:52
5:53
5:54
5:55
5:57
5:58
 mm
9
13
3
Temp °C
12
12
13
12
10
14
15
11
14
14
7
14
14
10
11
11
8
14
15
9
Feels °C
7
9
9
8
9
11
13
7
9
9
3
8
8
5
4
4
3
11
10
5
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  • 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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