Surf Forecasts:
Devonport Rivermouth surf forecast from 24 Aug 2026:
- Best quality surf: Friday 28 Aug, 1PM (local time) - 1.5ft (0.4m), 18s period, NW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 1PM (local time) - 1.5ft (0.4m), 18s period, NW swell with 108 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 1PM (local time) - 1.5ft (0.4m), 18s 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 28) at 1PM. The primary swell is predicted to be 0.4m and 18s period with a secondary swell of 0.1m and 8s. Another secondary swell of 0.6m and 4s 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 0.4m 18s and forecast to arrive on Friday (Aug 28) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 5s period and expected on Wednesday (Aug 26) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Fri 28th Aug) | 1.5ft (0.4m) 18s |
| Best Surf | 1PM (Fri 28th Aug) | 1.5ft (0.4m) 18s |
| Most Powerful | 1PM (Fri 28th Aug) | 1.5ft (0.4m) 18s |
Table - best surf conditions forecast for Devonport Rivermouth over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what's coming our way, and I gotta tell you, it's a bit of a slow one.
We're looking at a long stretch of nothing for the first ten days or so. From the 24th of August through the 1st of September, the surf is flat and messy. The swell is tiny, mostly under 2 feet, and whatever little energy shows up is wrecked by cross-shore winds. The water temp is 55°F with a slight warm anomaly, so it's a touch warmer than usual, but it's still cold. There's a glassy morning on the 27th, but with a 0.3 foot swell, it's a pond.
The only spot we have is Devonport Rivermouth, a point/river break that's inconsistent. It's exposed to the NW swell, which is what we're seeing, but the size is just not there. Crowds are sometimes an issue, but with conditions this bad, you'll have the place to yourself.
The first sign of any life pops up on the 2nd of September, Wednesday. The swell bumps up to 6 feet from the NNW, but with a short 7-second period. The combined energy is 269 (moderate), but it's a cross-onshore wind and the surf is described as marginal. This setup looks more interesting for kite surfing than paddle surfing.
The 4th of September, Friday, looks a bit better. We get 4 to 4 feet from the NW, with a 6-second period, but the wind goes clean with a cross-offshore breeze. The combined energy is moderate (127 in the morning, 182 in the afternoon). It'll be a clean, fun little wave at the rivermouth if you're keen, but it's still short period.
The one to watch, if you're planning ahead, is the morning of the 7th of September. The swell is only 1 feet, but it's got a long period of 15 seconds. Combined energy is 132 (moderate). That long period means it'll be slow and fat at a point break, but it'll be clean. It's a long-range hope, but with that size, it's a longboard or a stand-up paddle day.
Overall, there's nothing to get excited about for the first week. The 4th of September is your best bet for a clean, rideable wave, but it's small. The 7th of September has the best quality swell, but it's tiny. Hang in there, things have to turn around eventually.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon night. Very mild (max 14°C on Mon morning, min 5°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Sat afternoon, min 5°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 4 | NW 5 | NNW 5 | NW 13 | NNE 5 | NW 16 | NW 14 | WNW 14 | NNE 8 | NW 12 | N 22 | NNW 20 | NW 18 | NW 17 | NW 16 | NW 15 | NW 14 | NW 13 | NW 13 | WNW 4 | NW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 53 | 15 | 7 | 11 | 38 | 33 | 18 | 7 | 6 | 9 | 38 | 82 | 103 | 64 | 33 | 33 | 7 | 7 | 12 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | cross-off | cross-on | cross-off | cross-off | cross-off | off | glassy | cross | cross-off | cross-off | cross-off | off | glassy | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 7:40PM2.97m | 8:35AM2.85m | 8:22PM2.90m | 9:21AM2.81m | 9:11PM2.83m | 10:10AM2.78m | 10:05PM2.78m | 11:02AM2.78m | 11:05PM2.77m | 11:55AM2.81m | 00:05AM2.81m | 12:46PM2.87m | 1:04AM2.89m | ||||||||
Low Tide | 1:38PM1.33m | 2:05AM0.86m | 2:20PM1.37m | 2:47AM0.91m | 3:06PM1.40m | 3:34AM0.96m | 3:59PM1.41m | 4:28AM0.99m | 4:58PM1.36m | 5:26AM1.01m | 6:00PM1.27m | 6:26AM0.99m | 6:58PM1.13m | ||||||||
 | |  | | |  |  |  |  | | | | | | | | | | | | | |
 | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | 5:40 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 12 | 13 | 13 | 12 | 14 | 14 | 7 | 11 | 14 | 11 | 16 | 16 | 8 | 16 | 17 | 8 | 18 | 17 | 9 |
Feels °C | 10 | 11 | 11 | 12 | 11 | 9 | 9 | 9 | 3 | 8 | 10 | 7 | 11 | 11 | 4 | 12 | 12 | 3 | 12 | 11 | 4 |
Swell 1 Height (m) Direction Period (s) | NW 14 | NW 14 | NNW 5 | N 4 | NNE 5 | NNE 5 | NE 9 | NE 8 | WNW 4 | NE 8 | NE 8 | NNW 20 | NW 18 | NW 17 | NW 4 | NW 15 | NW 14 | NW 4 | NW 13 | NW 12 | NW 14 |
| kJ | 8 | 8 | 15 | 3 | 7 | 4 | 12 | 10 | 4 | 2 | 3 | 38 | 82 | 103 | 6 | 33 | 33 | 2 | 7 | 6 | 8 |
Swell 2 Height (m) Direction Period (s) | — | — | NW 13 | NE 8 | NE 7 | NW 16 | NW 14 | WNW 14 | NNE 8 | NW 12 | NW 12 | NW 13 | WNW 13 | NE 8 | NW 16 | NW 4 | NE 8 | NW 13 | NE 8 | NE 8 | NE 9 |
| kJ | — | — | 7 | 2 | 2 | 38 | 33 | 18 | 7 | 6 | 6 | 7 | 16 | 3 | 64 | 1 | 3 | 7 | 3 | 2 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | NW 13 | NW 17 | NNW 3 | NNE 8 | — | NW 13 | — | N 22 | NE 8 | NE 8 | — | NE 8 | NE 9 | — | NE 8 | — | — | NW 17 |
| kJ | — | — | — | 7 | 11 | 1 | 7 | — | 7 | — | 9 | 3 | 3 | — | 2 | 3 | — | 3 | — | — | 12 |
Wind waves Height (m) Direction Period (s) | NW 4 | NW 5 | — | ESE 2 | — | WSW 2 | WSW 3 | WNW 4 | — | — | WNW 3 | WNW 3 | WNW 4 | NW 4 | — | — | WNW 4 | WSW 2 | WNW 4 | WNW 4 | NW 4 |
| kJ | 22 | 53 | — | 1 | — | 1 | 3 | 10 | — | — | 6 | 7 | 12 | 14 | — | — | 10 | 1 | 2 | 12 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 220 | 184 | 131 | 131 | 216 | 184 | 216 | 178 | 131 | 184 | 184 | 180 | 180 | 148 | 131 | 180 | 180 | 184 | 184 | 184 | 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.
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