Surf Forecasts:
Devonport Rivermouth surf forecast from 25 Aug 2026:
- Best quality surf: Friday 28 Aug, 7AM (local time) - 1ft (0.3m), 18s period, NW swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 4PM (local time) - 4.5ft (1.3m), 6s period, NNW swell with 136 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 7AM (local time) - 1ft (0.3m), 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 7AM. The primary swell is predicted to be 0.3m and 18s 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 1.3m 6s and forecast to arrive on Tuesday (Sep 01) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Aug 26) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Fri 28th Aug) | 1ft (0.3m) 18s |
| Best Surf | 7AM (Fri 28th Aug) | 1ft (0.3m) 18s |
| Most Powerful | 4PM (Tue 1st Sep) | 4.5ft (1.3m) 6s |
Table - best surf conditions forecast for Devonport Rivermouth over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down this stretch of coast. I’ve got to be honest with you, looking at the forecast for Devonport Rivermouth, it’s a pretty grim few weeks ahead. We’re going to see a lot of small, weak waves, and the conditions aren't exactly going to be doing us any favours. There’s a real gap of nothingness at the start, so don't rush to grab your board just yet.
Right now, and for the first few days, it’s flat. The swell is basically non-existent, with heights barely lifting a finger at 0.3 ft to 0.7 ft. The combined energy is a measly 15 (Tuesday morning) and 29 (Tuesday afternoon), so you’re looking at a puddle. The water is sitting at 55°, which is about normal for this time of year, so nothing wild there. The wind is glassy early on Tuesday, but it’s absolutely no use with no swell.
We get a slight bump of energy on Friday the 28th, with the morning showing a combined energy of 129 – that’s a moderate kick. The swell is a tiny 1 ft, though, and coming from the NW, but the 18-second period is interesting. That’s a long-period groundswell which will be trying to wrap in, but it’s likely to be super inconsistent and straight. The wind is clean cross-off from the WSW, so the surface will be tidy. Still, it’s just a 1 ft wave, so calling it surfable is a stretch. It’s the best we’ve got so far, but that’s not saying much.
The next standout, and I mean the only one real worth a mention, is looking like Saturday the 5th of September. The afternoon shows a solid 4 ft swell from the WNW, with the combined energy jumping to 231 – that’s strong wave energy in the water. The period is a short 6 seconds, so it’s mostly windswell, but it’s going to have some push. The break is a point/river setup, which is good for these longer-period swells, but with a short period, it might be a bit chunky and disorganised. The wind is a gentle cross-shore, so it won’t be perfect, but it’s manageable. The morning of the 5th also has a solid 5 ft from the NW with a combined energy of 202, but it’s light cross-onshore, which will mess with the face a bit. Still, this is the most size we’ll see all fortnight.
The Saturday the 5th is the best on offer, but it’s still a long way out. The earlier part of the second week, like the 4th of September, has a glassy morning with 1 ft of 16-second swell, but the energy is only 97 – weak. It’s surfable but very ordinary. The 9th of September has some clean offshore winds and moderate energy (117-141), but again, the wave height is a pathetic 1 ft.
Crowds at Devonport Rivermouth can be a problem when it’s breaking, so if you’re heading out on the 5th, expect it to be busy for what’s on offer. The break is inconsistent, which is a real killer here. A spot that rarely breaks, and when it does, it’s this small? It’s a tough watch.
Overall, if you’re a beginner, the surf on the 5th is manageable at 4 ft, not too big. For everyone else, it’s a waiting game. The forecast could change, but for now, it’s a long blank run.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue morning. Very mild (max 14°C on Wed afternoon, min 6°C on Wed night). Winds increasing (calm on Tue morning, fresh winds from the W by Thu night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Sun morning, min 6°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | N 4 | N 4 | NW 16 | NW 14 | NNE 8 | WNW 5 | NW 12 | WNW 4 | NW 5 | NW 18 | NW 17 | NW 16 | NW 15 | NW 14 | NW 5 | N 19 | NW 19 | NW 18 | NW 17 | NW 5 | NW 16 |
Wave Graph | |||||||||||||||||||||
7 | 11 | 38 | 33 | 7 | 7 | 6 | 18 | 64 | 82 | 106 | 89 | 33 | 33 | 7 | 14 | 14 | 50 | 46 | 60 | 9 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | cross-off | cross-off | off | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross |
High Tide | 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 | 1:35PM2.97m | 2:00AM3.00m | ||||||||
Low Tide | 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 | 7:23AM0.96m | 7:52PM0.95m | ||||||||
6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | |
— | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | |
mm | 2 | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 11 | 10 | 13 | 14 | 8 | 12 | 13 | 11 | 14 | 14 | 7 | 14 | 15 | 11 | 17 | 17 | 11 | 15 | 14 | 12 |
Feels °C | 11 | 10 | 7 | 8 | 10 | 5 | 8 | 8 | 5 | 9 | 9 | 2 | 9 | 10 | 7 | 13 | 13 | 8 | 10 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | N 4 | NE 7 | NW 16 | NE 8 | NNE 8 | WNW 5 | NW 12 | NE 8 | NNW 20 | NW 6 | NW 17 | NW 16 | NW 15 | NW 14 | NW 5 | NW 13 | NW 19 | NW 5 | NW 17 | — | NW 16 |
6 | 2 | 38 | 10 | 7 | 4 | 6 | 3 | 37 | 20 | 106 | 89 | 33 | 33 | 6 | 7 | 14 | 5 | 46 | — | 9 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | NW 17 | NNE 5 | NW 14 | NW 14 | NW 13 | NE 8 | N 22 | NE 9 | NW 18 | NE 9 | NE 8 | NE 9 | N 9 | NW 13 | N 19 | NW 12 | NW 18 | — | — | — |
2 | 11 | 2 | 33 | 7 | 7 | 3 | 9 | 3 | 82 | 3 | 3 | 3 | 2 | 7 | 7 | 6 | 50 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | NW 13 | NW 13 | NE 7 | — | — | NE 8 | NW 4 | — | — | NW 13 | — | — | — | — | — | NW 19 | — | — | — | — | — |
7 | 7 | 2 | — | — | 3 | 1 | — | — | 27 | — | — | — | — | — | 14 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | N 4 | WNW 4 | W 5 | W 5 | SSW 2 | — | WNW 4 | NW 5 | WSW 3 | W 3 | W 3 | WNW 5 | WNW 5 | SW 3 | W 4 | WNW 4 | — | WNW 4 | NW 5 | NW 3 |
— | 9 | 9 | 25 | 11 | 1 | — | 18 | 64 | 4 | 7 | 7 | 43 | 29 | 2 | 6 | 7 | — | 1 | 60 | 3 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 143 | 184 | 184 | 184 | 218 | 131 | 184 | 178 | 180 | 0 | 178 | 180 | 180 | 211 | 178 | 178 | 178 | 178 | 184 | 178 | 220 |
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.











