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Surf Forecasts:
Alnes Lighthouse surf forecast from 17 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 8AM (local time) - 5ft (1.5m), 9s period, N swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 2PM (local time) - 5.5ft (1.7m), 9s period, N swell with 449 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 2PM (local time) - 1.5ft (0.5m), 8s period with N swell.
Best Forecast Surf Conditions for Alnes Lighthouse this week:
The surf forecast for Alnes Lighthouse over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 2PM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.6m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Alnes Lighthouse in the next 16 days are 1.7m 9s and forecast to arrive on Wednesday (Aug 19) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Mon 17th Aug) | 1.5ft (0.5m) 8s |
| Best Surf | 8AM (Wed 19th Aug) | 5ft (1.5m) 9s |
| Most Powerful | 2PM (Wed 19th Aug) | 5.5ft (1.7m) 9s |
Table - best surf conditions forecast for Alnes Lighthouse over the next 16 days.
The Lowdown
Alright, Rusty again, switching to imperial. We’ve got one spot in the mix: Alnes Lighthouse, a point break that gets a fair amount of swell. The water's sitting at 55°F, which is a touch colder than average for August.
The first few days are a write-off. From Monday the 17th through the rest of the week, the wind is mostly blowing sideways or onshore, and the surf is small and weak (energy in the 60s to 200s). Not your time.
The first real window opens Wednesday the 19th. You’ve got a clean, glassy morning with 5ft NW swell. Energy is moderate at 404. That’s a fun, clean session. Thursday the 20th is a carbon copy—glass again, 5ft of N swell, energy at 418. Those two mornings are your early standouts.
Things go flat and messy again until Tuesday the 25th. That morning gives you a clean, light offshore breeze and 5.5ft west swell. Energy is 409, so there’s some grunt. Wednesday the 26th is another gem: glassy conditions, 5.5ft west swell, and energy at 553. A real sweet spot.
Then the fun kicks up a gear for the big dogs. Friday the 28th sees 6.2ft SW swell in the AM, rising to 7.9ft WSW by afternoon, with the period stretching to 11 seconds. Energy is 623 in the AM and 1450 in the PM. The wind is messy though, so it’s marginal.
Saturday the 29th is the big one. A massive 16.4ft WNW groundswell with a 12-second period rolls in. Combined energy is a huge 6208. This is a solid, heavy-duty swell. It’s too big for anyone except experts, and with that long period, it’ll be walling up. The morning has a light breeze, but the afternoon gets cross-onshore and choppy. For a point break, the long period can make for some great lines, but don’t take it lightly.
First two days of September are smaller (4-6ft) but the wind is blowing hard and wrong. Not worth it.
The Pick: Go for Thursday morning the 20th for the glass and 5ft swell, or Wednesday morning the 26th for the best combo of clean surf and solid energy. The 29th is for experts only.
Short Range ForecastMostly dry. Very mild (max 13°C on Wed afternoon, min 11°C on Mon night). Winds increasing (calm on Mon afternoon, strong winds from the NE by Tue afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Very mild (max 13°C on Thu afternoon, min 10°C on Sat morning). Winds increasing (calm on Thu morning, fresh winds from the WSW by Sat afternoon). | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 6 | NNW 8 | N 7 | NNE 7 | NNE 7 | NNE 8 | N 9 | N 9 | N 8 | N 8 | N 8 | N 8 | NNW 8 | N 8 | N 7 | N 7 | N 7 | WNW 7 | N 7 | N 7 | N 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 41 | 159 | 183 | 167 | 176 | 330 | 399 | 449 | 364 | 302 | 284 | 212 | 173 | 164 | 82 | 44 | 34 | 29 | 23 | 23 | 14 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | glassy | cross-on | glassy | glassy | cross | cross-on | cross | cross-on | cross-on | cross | cross | cross-off | cross-off | cross | cross-on |
High Tide | 3:04PM1.52m | 3:15AM1.61m | 3:41PM1.44m | 3:58AM1.48m | 4:22PM1.36m | 4:46AM1.34m | 5:10PM1.28m | 5:47AM1.23m | 6:16PM1.23m | 7:09AM1.18m | 7:39PM1.23m | 8:37AM1.19m | 8:57PM1.29m | ||||||||
Low Tide | 9:04AM0.09m | 9:11PM0.26m | 9:42AM0.25m | 9:52PM0.37m | 10:21AM0.41m | 10:38PM0.48m | 11:06AM0.56m | 11:36PM0.59m | 12:08PM0.68m | 1:00AM0.66m | 1:37PM0.73m | 2:34AM0.65m | 2:59PM0.70m | 3:44AM0.57m | |||||||
 | |  |  | | | | |  | | | |  | |  | | |  |  |  |  | |
 | 5:41 | — | — | 5:43 | — | — | 5:46 | — | — | 5:48 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — |
 | — | — | 9:37 | — | — | 9:34 | — | — | 9:30 | — | — | 9:27 | — | — | 9:23 | — | — | 9:21 | — | — | 9:17 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 11 | 4 | 7 |
Temp °C | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 13 | 12 | 12 | 13 | 12 | 11 | 12 | 11 | 11 | 12 | 13 | 11 | 12 | 12 |
Feels °C | 10 | 11 | 5 | 4 | 3 | 3 | 7 | 10 | 8 | 12 | 10 | 6 | 7 | 9 | 7 | 6 | 6 | 6 | 4 | 4 | 5 |
Swell 1 Height (m) Direction Period (s) | NW 6 | NNW 8 | N 7 | W 10 | W 9 | W 8 | N 9 | N 9 | N 8 | N 8 | W 11 | N 8 | NNW 8 | N 8 | N 7 | N 7 | N 7 | WNW 7 | NW 6 | N 7 | N 7 |
| kJ | 41 | 159 | 183 | 17 | 25 | 12 | 399 | 449 | 364 | 302 | 82 | 212 | 173 | 164 | 82 | 44 | 34 | 29 | 18 | 23 | 14 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 7 | WNW 6 | W 6 | W 6 | — | W 8 | W 14 | W 11 | W 11 | — | W 10 | W 9 | WNW 6 | WNW 6 | WNW 5 | WNW 7 | N 7 | N 7 | SW 5 | WNW 7 |
| kJ | 28 | 16 | 6 | 3 | 1 | — | 5 | 14 | 121 | 116 | — | 49 | 27 | 25 | 12 | 5 | 29 | 25 | 23 | 8 | 9 |
Swell 3 Height (m) Direction Period (s) | N 7 | — | W 7 | — | — | — | — | W 8 | — | — | — | — | — | W 9 | W 9 | W 8 | W 9 | N 6 | W 8 | W 8 | W 8 |
| kJ | 10 | — | 4 | — | — | — | — | 5 | — | — | — | — | — | 15 | 14 | 12 | 6 | 1 | 5 | 11 | 12 |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 7 | NNE 7 | NNE 8 | — | — | — | — | N 8 | — | — | — | — | — | — | W 3 | SW 3 | — | W 4 |
| kJ | — | — | — | 167 | 176 | 330 | — | — | — | — | 284 | — | — | — | — | — | — | 1 | 3 | — | 10 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 648 | 648 | 666 | 708 | 694 | 626 | 0 | 733 | 0 | 0 | 932 | 733 | 493 | 751 | 733 | 57 | 865 | 691 | 691 | 928 | 728 |
Best forecast wave conditions in South and West Norway | |||||||||||||||||||||
Best forecast wave conditions in Norway | |||||||||||||||||||||
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Information about the Alnes Lighthouse Surf forecast
The above surf forecast table for Alnes Lighthouse provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Alnes Lighthouse can be found by selecting the local surf guide option on the grey menu. Our Alnes Lighthouse 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 (Alnes Lighthouse) 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 Alnes Lighthouse 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.
Are you planning a holiday in South and West Norway? If you are looking for accommodation near Alnes Lighthouse, camping, hotels and holiday cottages in South and West Norway, consider staying in Alesund which is 10 km (6 miles) away. Other places in and around South and West Norway where you can find information about places to rent, and car hire include Stranda which is 52 km (32 miles) away, Molde and Svelgen.
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