Devonport Rivermouth Surf Break

Lat Long: 41.16° S 146.36° E

Devonport Rivermouth Surf Forecast and Surf Report

Issued: 3 am 27 Jul 2026 (local time)

Forecast update in  hr  min

Today's Devonport Rivermouth sea temperature is
13.1° 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 26 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 4AM (local time) - 5ft (1.6m), 7s period, NW swell with offshore winds.
  • Most powerful swell: Tuesday 28 Jul, 4PM (local time) - 10ft (3.0m), 8s period, NNW swell with 1,371 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 4AM (local time) - 5ft (1.6m), 7s 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 Wednesday (Jul 29) at 4AM. The primary swell is predicted to be 1.6m and 7s period with a secondary swell of 1.3m and 7s. Another secondary swell of 0.4m and 11s is also forecast. 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 8s and forecast to arrive on Tuesday (Jul 28) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Jul 29) at 1PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Wed 29th Jul)5ft (1.6m) 7s
Best Surf 4AM (Wed 29th Jul)5ft (1.6m) 7s
Most Powerful 4PM (Tue 28th Jul)10ft (3.0m) 8s

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


The Lowdown

Alright, mate, Rusty here with a look at what’s comin’ up for Devonport Rivermouth. Gotta be straight with you – this stretch is lookin’ pretty sad for a good long while. We’ve got a 16-day window, but there's a big dry spell at the start.

The first week and a bit is basically a write-off. From Monday the 27th of July right through to almost the end of the first week of August, there’s just nothin’ worth paddlin’ out for. We’re talkin’ tiny scraps of swell, mostly under 2ft, with weak wave energy – you’re seein’ numbers like 34, 53, even down to single digits. The wind is messy, often cross or cross-onshore, and the wave comment across nearly every session is “poor surf conditions.” It’s gonna be a flat, lumpy, frustrating stretch. Only the odd morning on Wednesday the 29th offers a clean-ish look, but with a 2ft, 17-second groundswell the energy is just too weak (303). That long period will mean long lulls and not enough push for this river mouth setup.

There’s a bit of a pulse around Sunday the 2nd of August – we see the swell jump to 4ft in the morning and 6ft in the afternoon from the NNW, period around 5-6 seconds. But that’s a short-period windswell, and with cross-onshore winds, the wave comment is still “poor surf conditions.” The combined energy is moderate (109-254), but messy wind kills it.

The real standout doesn’t arrive until Monday the 10th of August. Monday afternoon is where things start to turn – a 8ft NNW swell, 8-second period, and the wind swings to a clean cross-offshore from the WSW. The energy jumps to 722 – that’s solid, punchy power. The wave comment says “expect very good surf conditions.” That’s our highlight for the whole forecast. Tuesday the 11th of August morning brings even more size – 10ft from the NNW – but that’s gettin’ into expert-only territory, especially for a river mouth. The period is still short at 8 seconds, so it’ll be a bit dumpy and powerful. The wind stays clean though.

By Tuesday afternoon on the 11th, the forecast shows an 12ft NNW swell with a period of 9 seconds and combined energy of 1698 – that’s very strong wave energy. The wave comment is positive, but it flat-out warns that the swell is predicted to be too big for this break. For a point/river setup like Devonport Rivermouth, that kind of size will likely close out or be extremely dangerous. Only the absolute top-tier experts should even look at it, and even then, it’s a caveat.

So, to wrap it up: the first 12 days or so are a bust. Monday the 10th of August afternoon is your best chance for a proper surf – clean, punchy, manageable size. If you’re a confident surfer, the Monday afternoon and Tuesday morning windows look the goods, but watch the size. The water temp is sittin’ around 56°F, which is pretty normal for this time of year.

Keep your eyes on the forecasts, but for now, this river mouth is mostly a no-go. Rusty out.

Short Range Forecast

Moderate rain (total 17mm), heaviest on Tue afternoon. Very mild (max 13°C on Mon morning, min 5°C on Tue night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 13°C on Fri morning, min 8°C on Thu night). Wind will be generally light.

Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
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
2
1
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)
0.7
NW
5
1
NW
5
1.6
NNW
6
3
NNW
8
3
NNW
8
1.9
NW
8
0.5
NW
17
0.6
NW
16
0.4
NW
14
0.3
NW
13
0.1
NW
13
0.1
NW
12
0.1
NW
12
0.1
NW
12
0.1
W
13
0.1
NW
18
0.1
NW
21
0.3
NW
19
1.1
NNW
5
1.8
NNW
6
2.2
NW
7
Wave Graph
Metric surfscale
Energy kJ
21
46
154
904
1371
435
143
151
69
27
7
6
6
6
3
12
18
58
61
254
516
Wind (km/h)
15
WNW
15
NW
30
NNW
35
NNW
35
NW
10
WNW
15
WSW
25
SW
15
WSW
20
W
15
WSW
15
WSW
10
SW
10
WNW
5
S
5
SSE
5
NNW
5
N
20
NNW
15
NNW
15
NNW
Wind State
cross
cross
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
off
glassy
glassy
glassy
cross-on
cross-on
cross-on
High Tide
9:17PM3.00m
10:17AM2.92m
10:03PM2.97m
11:03AM2.94m
10:51PM2.93m
11:49AM2.95m
11:39PM2.91m
12:34PM2.96m
00:29AM2.90m
1:18PM2.98m
1:18AM2.91m
2:01PM3.01m
2:08AM2.94m
Low Tide
3:14PM1.40m
3:44AM0.83m
4:02PM1.41m
4:30AM0.83m
4:53PM1.39m
5:17AM0.83m
5:44PM1.36m
6:06AM0.83m
6:35PM1.31m
6:54AM0.85m
7:24PM1.24m
7:42AM0.86m
8:12PM1.14m
part cloud
part cloud
rain showers
light rain
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:26
7:26
7:26
7:24
7:24
7:22
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:14
5:15
5:15
5:16
5:17
5:19
5:20
 mm
5
1
9
2
3
Temp °C
13
12
12
12
11
7
10
9
9
12
12
10
13
13
10
11
10
10
12
12
11
Feels °C
10
9
9
5
4
1
3
3
4
7
7
6
10
10
7
9
8
8
8
9
7
  • 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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