
Surf Forecasts:
Devonport Rivermouth surf forecast from 11 Aug 2026:
- Best quality surf: Friday 14 Aug, 4PM (local time) - 1.5ft (0.4m), 16s period, NW swell with cross-offshore winds.
- Most powerful swell: Wednesday 12 Aug, 7AM (local time) - 7.5ft (2.3m), 7s period, NW swell with 485 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 4PM (local time) - 1.5ft (0.4m), 16s 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 14) at 4PM. The primary swell is predicted to be 0.4m and 16s period with a secondary swell of 0.8m 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 2.3m 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 0.6m 3s period and expected on Wednesday (Aug 12) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Fri 14th Aug) | 1.5ft (0.4m) 16s |
| Best Surf | 4PM (Fri 14th Aug) | 1.5ft (0.4m) 16s |
| Most Powerful | 7AM (Wed 12th Aug) | 7.5ft (2.3m) 7s |
Table - best surf conditions forecast for Devonport Rivermouth over the next 16 days.
The Lowdown
Alright, Rusty here, let’s look at what’s on the table for the next couple of weeks.
To be honest, it’s a pretty bleak stretch for Devonport Rivermouth (Tasmania). The whole 16-day window is a struggle, with only one real standout session that gets the nod.
The best chance you’ll get is Wednesday morning, August 12th. The swell comes in at 6 ft from the NW with a short period of 7 seconds, giving the water a bit of push—combined energy is moderate at 402. The wind is blowing cross-off from the WSW at 16 mph, which should keep the surface clean. It’s a point/river setup, so that NW swell finds its way in, but this spot is inconsistent and can be picky, and with a beginner-friendly difficulty, it's not a heavy wave. Crowds are possible here sometimes. The water temperature is about average for this time of year.
After that, the surf drops right off. Thursday the 13th through the end of the month is mostly flat or tiny, with poor conditions and scores that don’t get the blood pumping. There’s a long gap of nothing worthwhile. The combined energy falls away to weak numbers, often under 100. Winds are messy or onshore, and the swell heights are fractions of a foot.
One thing worth watching: on Sunday morning, August 23rd, there’s a glassy, dead calm morning with a very long-period swell from the NNW at 21 seconds and a tiny 0.7 ft. That’s not going to break for a paddle surfer, but it tells you there’s a deep groundswell pulse in the water. The next day, Monday the 24th, has a glassy afternoon with a 1.0 ft NW swell and 16-second period, but again, too small to bother with.
The short-period swells that pop up around the 18th and 25th are in the 4 ft to 5 ft range from the NE and WNW, but with periods under 8 seconds, the waves are weak and crumbly, and the wind is cross or onshore, so it’s a messy affair. Honestly, for a beach-and-reef setup like this, those conditions look more interesting for a kite surfer than a paddle surfer.
Bottom line: Wednesday morning the 12th is your one shot. After that, you’re waiting a long time. Forecasts can change, but right now, it’s a quiet spell.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Tue night. Very mild (max 14°C on Thu morning, min 8°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Very mild (max 13°C on Mon morning, min 8°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 6 | NW 7 | NW 7 | WNW 6 | WNW 6 | NW 16 | NW 16 | NW 16 | NW 16 | NW 16 | NW 16 | NW 16 | NW 15 | NW 14 | NW 14 | NW 14 | NW 14 | NW 15 | NW 16 |
Wave Graph | |||||||||||||||||||
190 | 386 | 200 | 64 | 99 | 90 | 91 | 93 | 65 | 40 | 64 | 39 | 35 | 33 | 33 | 33 | 33 | 33 | 43 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | cross-on | cross-off | cross | on | cross-off | cross-off | cross-on | cross |
High Tide | 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 | |||||||
— | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | |
— | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | |
mm | 5 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 11 | 11 | 11 | 14 | 14 | 11 | 14 | 14 | 10 | 11 | 11 | 11 | 12 | 12 | 10 | 13 | 13 | 11 |
Feels °C | 7 | 6 | 6 | 6 | 10 | 10 | 6 | 9 | 10 | 7 | 9 | 9 | 8 | 9 | 9 | 7 | 9 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | NE 10 | NW 18 | NW 19 | NW 17 | NW 16 | NW 16 | NW 16 | NW 16 | NW 16 | NW 5 | NW 16 | NW 16 | NW 15 | NE 4 | NE 4 | NNE 4 | NNE 4 | NW 15 | NW 16 |
4 | 12 | 57 | 45 | 94 | 90 | 91 | 93 | 65 | 5 | 64 | 39 | 35 | 3 | 5 | 4 | 1 | 33 | 38 | |
Swell 2 Height (m) Direction Period (s) | NW 17 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | N 10 | — | — | NW 16 | NW 4 | NW 4 | — | NW 14 | NW 14 | NW 14 | NW 14 | — | — |
12 | 4 | 4 | 4 | 4 | 4 | 2 | — | — | 40 | 1 | 1 | — | 33 | 33 | 33 | 33 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NW 6 | NW 7 | NW 7 | WNW 6 | WNW 6 | NW 6 | WNW 5 | WNW 6 | WNW 6 | SW 2 | — | — | — | SE 2 | — | — | — | NE 4 | NE 5 |
190 | 386 | 200 | 64 | 99 | 47 | 33 | 49 | 39 | 1 | — | — | — | 1 | — | — | — | 2 | 43 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 180 | 184 | 180 | 180 | 180 | 178 | 178 | 178 | 0 | 50 | 131 | 148 | 131 | 131 | 143 | 131 | 131 | 143 | 131 |
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.











