Devonport Rivermouth Surf Break

Lat Long: 41.16° S 146.36° E

Devonport Rivermouth Surf Forecast and Surf Report

Issued: 3 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: Monday 21 Sep, 1AM (local time) - 7ft (2.1m), 7s period, NW swell with 472 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 2.1m 7s and forecast to arrive on Monday (Sep 21) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Tuesday (Sep 15) at 4AM.

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 1AM (Mon 21st Sep)7ft (2.1m) 7s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what we’ve got coming up for Devonport Rivermouth.

Honestly, mate, it’s a tough stretch. We’re looking at a solid 16-day run, and I gotta say, the forecast is pretty flatlined for any decent surf. Every single session in the data is marked as poor surf conditions, so there are no real standouts, no days to circle on the calendar. The whole period is basically one long gap with no worthwhile recommendations.

We kick off on Monday, September 14th. Morning sees a tiny 2ft NW swell, but with a cross-shore wind at 12 mph and weak combined energy (42), it’s messy and not worth paddling out. The afternoon bumps up slightly to 4ft from the NW, but the wind stays crummy. Tuesday actually brings some glassy-looking conditions with a cross-off breeze, but the swell drops to almost nothing – 0.3ft in the morning and 1ft in the afternoon. Clean as a whistle, but there’s no wave to ride.

Wednesday the 16th offers the cleanest conditions of the early week – a gentle offshore breeze and clean lines. But again, the swell is tiny at 1ft with a 15-second period. That long period means it’s a groundswell, but without any size, it’s just a pretty ocean. The combined energy sits at 77, which is weak. The water temp is about 55°, and the anomaly is 0.9°, so it’s pretty normal for this time of year – nothing unusual there.

As we roll into the weekend of the 19th and 20th, we see a spike in swell. Saturday morning hits 6ft from the NW with a period of 7 seconds, and the combined energy jumps to 305. That’s moderate energy, but the wind is a cross-shore at 16 mph, creating a lumpy chop. That’s size for a beginner to be cautious with – over 5ft, it’s not ideal for learners. The setup at this point break and river mouth might actually start looking better for kite surfing than paddling, given the poor quality.

Sunday the 20th gets messy with a 22 mph cross-wind and lumpy cross-chop on a 5ft NNW swell. No good.

The second week, from September 22nd onward, is even smaller and less interesting. There’s a moment on Tuesday the 22nd morning with glassy conditions and a 0.7ft swell – dead flat. The 24th has another glassy morning with a 2ft NE swell, but it’s just not enough to get excited about. The very end of the month, the 29th, shows 3ft onshore slop with very low energy.

So there it is. Nothing to write home about. For this area, a blank run like this isn’t totally unusual – sometimes the forecasts just line up badly. Keep an eye on it, things can change. But for now, I’d save the wax and wait for a better window.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 15°C on Mon afternoon, min 6°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Sun morning. Very mild (max 18°C on Sat morning, min 9°C on Thu night). Mainly fresh winds.

Mon
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
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
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
5
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
0.9
WNW
5
0.1
NW
14
1.1
WNW
5
1.7
NW
6
1.3
NW
6
1.8
NW
6
1.9
NW
6
0.9
NW
6
0.8
NNW
6
1.3
NNW
7
2.1
NW
7
Wave Graph
Metric surfscale
Energy kJ
53
75
11
65
74
77
84
38
34
42
8
69
178
111
273
302
47
39
158
472
Wind (km/h)
25
WNW
25
WSW
25
WSW
25
WSW
15
WSW
10
SW
20
SW
15
SW
20
WSW
20
WSW
25
W
25
WNW
30
NW
25
WNW
20
WNW
25
WNW
5
W
20
NW
40
WNW
25
W
Wind State
cross
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
glassy
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
8:27PM0.64m
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
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
cloud
rain showers
clear
clear
clear
rain showers
part cloud
clear
<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>
6:01
6:02
6:04
6:05
6:06
6:07
6:07
 mm
1
2
Temp °C
15
12
11
10
7
13
13
8
12
12
9
15
15
14
18
18
13
16
13
12
Feels °C
10
8
4
3
3
8
7
3
7
7
4
9
9
9
14
14
11
12
6
5
  • 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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