
Surf Forecasts:
Devonport Rivermouth surf forecast from 6 Aug 2026:
- Best quality surf: Thursday 13 Aug, 7AM (local time) - 4ft (1.2m), 18s period, NW swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 5.5ft (1.7m), 18s period, NW swell with 1,871 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 7PM (local time) - 1ft (0.3m), 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 Friday (Aug 07) at 7PM. The primary swell is predicted to be 0.9m and 4s period with a secondary swell of 0.3m and 14s. Another secondary swell of 0.2m and 18s is also forecast. 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 1.7m 18s and forecast to arrive on Thursday (Aug 13) at 10AM. 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 Monday (Aug 10) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Fri 7th Aug) | 1ft (0.3m) 14s |
| Best Surf | 7AM (Thu 13th Aug) | 4ft (1.2m) 18s |
| Most Powerful | 10AM (Thu 13th Aug) | 5.5ft (1.7m) 18s |
Table - best surf conditions forecast for Devonport Rivermouth over the next 16 days.
The Lowdown
Alright, let’s get into it. Looking at the charts for the next couple of weeks, it’s a bit of a waiting game. We’ve got a lot of flat, small days ahead before things finally start to show a bit of life. The first few days are a write-off for anything decent, so don’t even bother waxing up just yet.
The run starts off weak. Thursday the 6th has a tiny 0.3ft to 3ft of swell with a messy 4 to 16 second period, and the wind is a cross-off, so it’s clean but there’s just nothing on it. Friday and Saturday are similar, with glassy conditions but only 1ft of swell. It’s all pretty gutless. The combined energy is weak, under 100 (13-74), so there’s no push at all.
We get a bit of a pulse on Sunday the 9th, but the wind swings onshore and it gets messy. Swell bumps up to 3ft in the morning and 6ft by the afternoon, but it’s short-period, wind-driven junk from the N/NNE. The energy jumps to moderate (143-292), but it’s not going to be any good. Monday the 10th has a similar story with 1ft and 4ft, but cleaner cross-off winds. Still, it’s just not enough to get excited about.
The middle of next week looks like the only real chance we get. Wednesday the 12th brings a bigger pulse, but it’s a mess. The swell jumps to 8ft to 10ft with a short 8-second period, and the wind is howling from the NW. The energy is strong, hitting 1978, but it’s going to be lumpy, cross-chop chaos. This is not a paddle-out day. Honestly, this setup looks more interesting for kite surfing than for a proper surf. Thursday the 13th is the standout. The swell drops to a more manageable 6ft in the morning, the period stretches way out to 18 seconds, and the wind goes clean cross-off from the SW. The energy is right up there at 2243. This is the one to aim for. Devonport Rivermouth (Northland) is inconsistent, so you have to pick your moments, but with that long-period NW groundswell and offshore wind, it could be firing. It’s a point/river setup, so that long period should wrap in nicely. Just be aware it’ll be a bit bigger than the average punter wants.
After that, it fades fast. Friday the 14th drops back to 2ft, and the rest of the fortnight is mostly small and weak. There’s a brief spike on Tuesday the 18th with 3ft to 4ft, but it’s short-period and the wind is all over the place. Not worth the effort.
So, the call is simple. The only real window is Thursday the 13th. It’s a long way out, so treat it as promising rather than guaranteed, but it’s got everything you’d want. The rest is a flat, bumpy mess. Water temp is 55°, which is about normal for this time of year, so a hood is probably a good idea.
Rusty
Short Range ForecastModerate rain (total 10mm), heaviest on Sat night. Very mild (max 13°C on Thu morning, min 5°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 48mm), heaviest during Sun afternoon. Very mild (max 12°C on Mon morning, min 8°C on Mon night). Winds increasing (light winds from the WSW on Sun night, fresh winds from the NNW by Tue night). | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | NW 16 | WNW 4 | NW 5 | NW 18 | NW 16 | NW 18 | NW 16 | NW 16 | N 6 | NNW 6 | N 6 | NW 7 | NW 19 | WNW 6 | NW 15 | NW 14 | NNW 7 | NNW 8 | NNW 8 | NW 8 | NW 9 |
Wave Graph | |||||||||||||||||||||
10 | 18 | 22 | 50 | 38 | 48 | 40 | 39 | 156 | 69 | 273 | 116 | 123 | 107 | 84 | 74 | 290 | 1109 | 1027 | 1027 | 571 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | glassy | glassy | off | cross-off | on | cross-on | on | on | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross | cross-off |
High Tide | 4:54PM3.24m | 5:37AM3.15m | 5:43PM3.30m | 6:34AM3.18m | 6:35PM3.32m | 7:33AM3.18m | 7:30PM3.31m | 8:33AM3.16m | 8:30PM3.28m | 9:36AM3.14m | 9:34PM3.23m | 10:39AM3.12m | 10:41PM3.18m | ||||||||
Low Tide | 10:50AM0.96m | 11:21PM0.63m | 11:39AM1.00m | 00:11AM0.54m | 12:30PM1.04m | 1:05AM0.48m | 1:25PM1.09m | 2:01AM0.46m | 2:23PM1.13m | 3:01AM0.48m | 3:27PM1.16m | 4:05AM0.52m | 4:35PM1.15m | ||||||||
7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | |
— | 5:23 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | |
mm | — | — | 2 | — | — | — | — | — | 8 | 11 | 14 | 4 | — | — | — | 2 | 5 | 12 | 2 | 4 | — |
Temp °C | 13 | 11 | 9 | 11 | 11 | 7 | 10 | 12 | 12 | 11 | 11 | 11 | 12 | 12 | 10 | 12 | 12 | 12 | 10 | 10 | 7 |
Feels °C | 8 | 7 | 7 | 9 | 9 | 4 | 7 | 10 | 8 | 7 | 6 | 9 | 6 | 8 | 6 | 8 | 7 | 5 | 4 | 5 | 2 |
Swell 1 Height (m) Direction Period (s) | NW 16 | NW 16 | NW 5 | NW 5 | NW 16 | NW 4 | NW 16 | NNW 5 | NW 14 | NNW 6 | NW 13 | NNE 6 | NW 19 | NW 17 | NW 15 | NW 14 | NW 13 | NW 22 | NNW 8 | — | NW 9 |
10 | 10 | 22 | 10 | 38 | 5 | 40 | 8 | 8 | 69 | 7 | 106 | 123 | 104 | 84 | 69 | 28 | 18 | 789 | — | 571 | |
Swell 2 Height (m) Direction Period (s) | W 12 | E 10 | NW 19 | NW 18 | NW 19 | NW 17 | — | NW 16 | NW 18 | NW 14 | NW 18 | NW 7 | NE 9 | NE 10 | NNE 10 | NE 10 | NE 10 | — | NW 18 | — | NNW 18 |
3 | 2 | 14 | 50 | 14 | 46 | — | 39 | 13 | 8 | 12 | 116 | 21 | 23 | 10 | 4 | 4 | — | 162 | — | 124 | |
Swell 3 Height (m) Direction Period (s) | E 9 | — | NW 11 | NW 14 | — | NW 18 | — | N 20 | — | NW 18 | — | NW 19 | NE 6 | — | — | — | — | — | — | — | — |
2 | — | 5 | 8 | — | 48 | — | 7 | — | 13 | — | 58 | 1 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | W 3 | WNW 4 | — | — | NW 5 | — | — | — | N 6 | NNE 6 | N 6 | — | W 6 | WNW 6 | NW 6 | NW 5 | NNW 7 | NNW 8 | NNW 8 | NW 8 | — |
5 | 18 | — | — | 22 | — | — | — | 156 | 53 | 273 | — | 97 | 107 | 31 | 74 | 290 | 1109 | 1027 | 1027 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 178 | 131 | 131 | 50 | 201 | 0 | 180 | 216 | 184 | 218 | 216 | 0 | 356 | 201 | 0 | 180 | 180 | 218 | 218 | 178 | 0 |
Best forecast wave conditions in North Coast of Tasmania | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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.











