Devonport Rivermouth Surf Break

Lat Long: 41.16° S 146.36° E

Devonport Rivermouth Surf Forecast and Surf Report

Issued: 9 pm 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's Devonport Rivermouth sea temperature is
13.0°C
0.7° 

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 14 Sep 2026:

  • Best quality surf: Tuesday 15 Sep, 7PM (local time) - 1.5ft (0.4m), 14s period, NW swell with offshore winds.
  • Most powerful swell: Sunday 20 Sep, 4PM (local time) - 10ft (3.0m), 9s period, NW swell with 1,246 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 15 Sep, 7PM (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 Tuesday (Sep 15) at 7PM. The primary swell is predicted to be 0.4m and 14s period with a secondary swell of 0.7m and 6s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Devonport Rivermouth in the next 16 days are 3.0m 9s and forecast to arrive on Sunday (Sep 20) 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 1.1m 6s period and expected on Thursday (Sep 17) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Tue 15th Sep)1.5ft (0.4m) 14s
Best Surf 7PM (Tue 15th Sep)1.5ft (0.4m) 14s
Most Powerful 4PM (Sun 20th Sep)10ft (3.0m) 9s

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


The Lowdown

G’day, I’m Rusty. Let’s break down what’s in store for Devonport Rivermouth (point/river) over the next couple of weeks.

Right from the start, the next few days are a total bust. Tuesday the 15th and Wednesday the 16th have barely any surf – tiny 0.3ft to 1ft NW swell with combined energy from 19 to 84 (weak). The wind’s cross-off or offshore, so the water’s clean, but there’s nothing to ride. Thursday the 17th is more of the same: 0.7ft to 1.0ft NW swell, energy dropping to 34 and then 20 (weak). It’s a dry spell for the first three days.

Friday the 18th brings a little more size, but don’t get excited. Swell hits 4ft in the morning and 5ft in the afternoon out of the WNW and NW, but the period is a short 5 to 6 seconds, and the wind turns cross-shore. Energy climbs to 95 (weak) then 160 (moderate), but the waves are lumpy and chopped. Saturday the 19th is similar: 4ft to 5ft NW swell with short period, energy at 131 and 161 (moderate), but cross-off wind in the morning cleans it up before the afternoon cross-shore ruins it.

Sunday the 20th is where things get a bit rowdy. The morning serves up an 8ft NW swell with a 7-second period, combined energy at 754 (strong). Wind is light cross-onshore, so it’s marginal. This is expert-only territory over 8ft, and the short period means it’s going to be dumpy – not for beginners. The afternoon blows up with 10ft NW swell at 9 seconds and a fresh cross-shore wind, energy hitting 1246 (very strong), but conditions are poor and lumpy. Honestly, this is more of a kite-surfing day than a paddle session.

After that, Monday the 21st through Thursday the 24th drops right back down. Swell sizes from 1.0ft to 3ft, mostly NW or NNE, with weak energy (26 to 65). A few glassy moments on Wednesday the 23rd and Thursday the 24th afternoon, but the waves are tiny – not worth suiting up for.

Friday the 25th is a small bright spot. Morning brings 4ft NW swell at 5 seconds, combined energy of 145 (moderate), and glassy conditions. It’s surfable but very ordinary. The afternoon gets a light cross-onshore and quality drops.

Saturday the 26th morning has a 1ft NW swell but with a long 16-second period, energy at 162 (moderate), and glassy wind – so it’s clean, but tiny. That long-period groundswell is better for point setups like this, but there’s just not enough size. The afternoon bumps to 2ft NW swell with a 19-second period and energy of 242 (moderate), but onshore wind kills it.

The rest of the outlook into late September and the 30th is mostly small, weak, and clean but unsurfable. A few glassy mornings with 1ft to 2ft NE or NNE swell, but combined energy is under 60 (weak).

If I had to call a standout, it’d be Sunday the 20th morning – but only for experts who can handle a big, lumpy 8ft NW swell. Even then, it’s marginal. For everyone else, this is a flat and quiet stretch for Devonport Rivermouth. We’ll need a change in the pattern to get anything worth paddling for.

Stay patient, and keep an eye on the sky – it never stays this flat forever.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 13°C on Wed morning, min 6°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Sun afternoon. Very mild (max 18°C on Sat afternoon, min 9°C on Thu night). Mainly fresh winds.

Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
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
1
0
0
0
0
0
0
0
0
0
0
0
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)
1.1
NW
6
0.1
NW
16
0.4
NW
14
0.4
NW
14
0.4
NW
15
0.4
NW
15
0.3
NW
16
0.3
NW
15
0.2
WNW
14
0.1
NW
14
1.1
WNW
5
1.6
NW
6
1
NW
5
1.3
NW
6
1.6
NW
6
0.3
NW
12
2.5
NW
7
3
NW
9
1.3
NW
7
Wave Graph
Metric surfscale
Energy kJ
75
11
65
74
77
84
38
34
20
8
71
160
56
124
161
23
754
1246
194
Wind (km/h)
25
WSW
25
W
25
WSW
15
WSW
15
SSW
20
SW
15
WSW
20
WSW
20
WSW
25
W
25
WNW
30
NW
30
WNW
25
W
25
WNW
10
WNW
10
NW
35
WNW
30
WSW
Wind State
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross
cross
cross-on
cross
cross-off
High Tide
2:40AM3.15m
2:50PM3.18m
3:27AM3.20m
3:31PM3.22m
4:09AM3.21m
4:08PM3.23m
4:47AM3.20m
4:42PM3.21m
5:22AM3.15m
5:14PM3.15m
5:55AM3.08m
5:45PM3.08m
Low Tide
8:50AM0.84m
9:12PM0.54m
9:32AM0.86m
9:53PM0.49m
10:10AM0.90m
10:30PM0.50m
10:46AM0.96m
11:04PM0.54m
11:19AM1.04m
11:36PM0.62m
11:50AM1.12m
00:07AM0.70m
clear
clear
clear
part cloud
part cloud
clear
part cloud
cloud
clear
part cloud
part cloud
part cloud
rain showers
part cloud
clear
clear
part cloud
rain showers
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:15
6:13
6:11
6:09
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:02
6:04
6:05
6:06
6:07
6:07
 mm
1
3
Temp °C
12
11
10
7
13
13
8
13
13
10
15
14
15
17
18
12
17
14
13
Feels °C
8
4
3
2
8
7
3
8
8
5
9
8
8
13
14
10
12
7
7
  • 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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