Devonport Rivermouth Surf Break

Lat Long: 41.16° S 146.36° E

Devonport Rivermouth Surf Forecast and Surf Report

Issued: 3 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Devonport Rivermouth sea temperature is
12.5° C
0.1° 

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 11 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 1AM (local time) - 1ft (0.3m), 17s period, NW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 12 Aug, 7AM (local time) - 8ft (2.5m), 7s period, NW swell with 701 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 1AM (local time) - 1ft (0.3m), 17s 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 (Aug 13) at 1AM. The primary swell is predicted to be 0.3m and 17s period with a secondary swell of 0.7m 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 2.5m 7s and forecast to arrive on Wednesday (Aug 12) at 7AM. 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 7s period and expected on Tuesday (Aug 18) at 1PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Thu 13th Aug)1ft (0.3m) 17s
Best Surf 1AM (Thu 13th Aug)1ft (0.3m) 17s
Most Powerful 7AM (Wed 12th Aug)8ft (2.5m) 7s

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


The Lowdown

G’day, Rusty here. Same story, different numbers. This 16-day run for Devonport Rivermouth is a lean one. The spot is inconsistent, and you’re looking at a whole lot of flatness with hardly a ripple worth chasing.

It starts Tuesday the 11th of August with a tiny 1ft northwest windswell and a clean cross-off breeze, but nothing to ride. Wednesday the 12th gets a pulse of 6ft from the NW with a short 8-second period and combined energy of 423 (moderate) – marginal, rainy, and breezy. Could be a beginner window, but it’s not great. Then Thursday the 13th through Tuesday the 25th of August is a brutal two-week gap of leftover NW groundswell at 1ft, periods over 14 seconds, combined energy dropping to weak levels between 10 and 89. There are some glassy mornings (Saturday the 15th and Sunday the 16th are dead calm), but no swell to use.

Water temp is 55°F, about average for the time of year.

The only real wave day is Wednesday the 26th of August. Morning brings 4ft from the NNW with a short 6-second period, combined energy 105 (moderate), glassy from an east breeze – clean and rideable. It gets bigger in the afternoon, 6ft from the NNW with 7-second period, combined energy 307 (moderate), but a NNW wind at 9 mph makes it cross-onshore and choppy. Size is for intermediates and up. Hit the morning glass if you can – it’s your only real shot.

This break doesn’t fire often, and this stretch is a real quiet spell. Forecasts can change, but for now, it’s a whole lot of waiting.

Rusty.

Short Range Forecast

Moderate rain (total 10mm), heaviest on Tue night. Very mild (max 14°C on Thu morning, min 8°C on Wed night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 14°C on Fri afternoon, min 9°C on Fri night). Wind will be generally light.

Tue
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
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
1
1
1
0
0
0
0
0
0
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)
1.1
NW
4
1.8
NW
6
1.9
NW
7
1.6
NW
7
0.3
NW
17
1.2
WNW
6
0.4
NW
16
0.4
NW
16
0.4
NW
16
0.4
NW
16
0.3
NW
16
0.3
NW
16
0.3
NW
16
0.3
NW
15
0.3
NW
15
0.3
NW
14
0.3
NW
14
0.3
NW
14
0.3
NW
15
0.3
NW
15
Wave Graph
Metric surfscale
Energy kJ
46
248
371
244
45
99
90
91
94
65
39
39
39
35
33
33
32
32
37
35
Wind (km/h)
20
WNW
30
NW
25
WSW
20
WSW
15
W
20
W
15
W
20
W
20
W
15
WSW
5
SSW
5
SE
5
NW
5
SSE
10
SE
10
ENE
10
SE
10
SE
5
E
10
SE
Wind State
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
glassy
glassy
glassy
cross-off
cross-on
cross-off
cross-off
glassy
cross-off
High Tide
9:34PM3.23m
10:39AM3.12m
10:41PM3.18m
11:41AM3.12m
11:48PM3.14m
12:41PM3.13m
00:53AM3.13m
1:38PM3.16m
1:56AM3.13m
2:30PM3.18m
2:53AM3.14m
3:18PM3.20m
3:46AM3.13m
Low Tide
4:05AM0.52m
4:35PM1.15m
5:11AM0.57m
5:44PM1.09m
6:18AM0.60m
6:51PM0.99m
7:20AM0.64m
7:53PM0.87m
8:17AM0.68m
8:47PM0.77m
9:09AM0.74m
9:37PM0.69m
part cloud
mod rain
rain showers
rain showers
cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:09
7:07
7:07
7:05
7:03
7:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:28
5:29
5:30
5:30
5:31
5:32
5:34
 mm
8
1
1
Temp °C
13
12
11
11
11
14
14
11
14
14
11
13
12
11
13
12
11
12
13
11
Feels °C
8
7
6
6
6
10
10
6
9
10
8
10
10
9
11
9
8
10
12
8
  • Map Icons:
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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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