Surf Forecasts:
Mill Bay surf forecast from 18 Sep 2026:
- Best quality surf: Monday 21 Sep, 7AM (local time) - 3ft (0.9m), 7s period, NNW swell with offshore winds.
- Most powerful swell: Sunday 20 Sep, 7PM (local time) - 6ft (1.8m), 6s period, NW swell with 256 kJ wave energy.
- Next surfable swell (1★+): Monday 21 Sep, 7AM (local time) - 3ft (0.9m), 7s period with NNW swell.
Best Forecast Surf Conditions for Mill Bay this week:
The surf forecast for Mill Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 21) at 7AM. The primary swell is predicted to be 0.9m and 7s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Mill Bay in the next 16 days are 1.8m 6s and forecast to arrive on Sunday (Sep 20) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 6s period and expected on Saturday (Sep 19) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 21st Sep) | 3ft (0.9m) 7s |
| Best Surf | 7AM (Mon 21st Sep) | 3ft (0.9m) 7s |
| Most Powerful | 7PM (Sun 20th Sep) | 6ft (1.8m) 6s |
Table - best surf conditions forecast for Mill Bay over the next 16 days.
Short Range ForecastModerate rain (total 11mm), heaviest on Fri morning. Very mild (max 14°C on Fri night, min 11°C on Sat night). Winds decreasing (gales from the WSW on Sat afternoon, light winds from the WSW by Sun night). | Days 4-6 Weather SummaryHeavy rain (total 21mm), heaviest during Tue night. Very mild (max 18°C on Mon night, min 8°C on Wed morning). Winds decreasing (fresh winds from the S on Mon morning, calm by Tue night). | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||
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 8 | NW 12 | N 8 | N 8 | N 8 | N 8 | WNW 6 | WNW 6 | NW 7 | NNW 7 | N 9 | N 8 | N 8 | N 8 | NNE 8 | NNE 8 | NW 14 | N 8 | NW 11 | NW 12 | NNW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 292 | 5 | 1 | 1 | 1 | 0 | 0 | 179 | 47 | 71 | 32 | 18 | 10 | 6 | 7 | 238 | 1 | 60 | 66 | 23 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | glassy | on | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 3:43PM1.94m | 4:37AM1.81m | 4:57PM1.83m | 6:10AM1.72m | 6:32PM1.82m | 7:44AM1.77m | 7:53PM1.94m | 8:46AM1.89m | 8:46PM2.11m | 9:28AM2.03m | 9:26PM2.28m | 10:03AM2.19m | 10:01PM2.44m | ||||||||
Low Tide | 9:44PM0.95m | 10:09AM1.17m | 11:24PM1.08m | 12:10PM1.23m | 1:28AM1.01m | 1:48PM1.13m | 2:32AM0.83m | 2:38PM0.96m | 3:12AM0.63m | 3:15PM0.79m | 3:44AM0.42m | 3:47PM0.62m | |||||||||
 | |  |  |  | | | |  |  | | | |  |  |  | | | | |  | |
 | 6:43 | — | — | 6:46 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:58 | — | — |
 | — | 7:22 | — | — | 7:20 | — | — | 7:16 | — | — | 7:14 | — | — | 7:10 | — | — | 7:07 | — | — | 7:05 | — |
mm | 1 | 1 | 4 | 2 | — | 3 | — | — | — | — | 2 | — | — | — | 10 | 9 | — | — | — | — | 3 |
Temp °C | 13 | 12 | 14 | 13 | 12 | 12 | 12 | 12 | 11 | 10 | 14 | 18 | 17 | 12 | 11 | 9 | 11 | 11 | 11 | 15 | 17 |
Feels °C | 4 | 7 | 4 | 3 | 0 | 1 | 0 | 1 | 3 | 6 | 11 | 15 | 13 | 7 | 8 | 7 | 6 | 8 | 2 | 7 | 10 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | NW 12 | SSE 6 | N 8 | SSE 7 | SSE 7 | SSW 6 | SW 5 | S 7 | NNW 7 | N 9 | N 8 | N 8 | S 4 | NW 14 | WNW 14 | ENE 3 | NE 5 | NW 11 | NW 12 | NW 11 |
| kJ | 6 | 292 | 82 | 1 | 36 | 10 | 3 | 1 | 1 | 47 | 71 | 32 | 18 | 5 | 49 | 118 | 1 | 1 | 60 | 66 | 32 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | SSE 7 | S 7 | S 7 | WNW 12 | WNW 12 | SSE 4 | WNW 10 | WNW 10 | SSE 4 | NNE 8 | N 8 | SE 5 | NW 6 | N 12 | NNW 11 |
| kJ | 5 | 5 | 1 | 1 | 1 | 1 | 5 | 1 | 1 | 83 | 55 | 3 | 20 | 34 | 2 | 7 | 5 | 1 | 11 | 11 | 23 |
Swell 3 Height (m) Direction Period (s) | S 6 | N 8 | N 8 | N 8 | N 8 | — | — | — | NW 13 | NNE 9 | W 11 | WNW 11 | W 10 | N 8 | NNE 8 | SSE 4 | SSE 4 | N 8 | — | N 7 | — |
| kJ | 1 | 1 | 5 | 1 | 1 | — | — | — | 7 | 15 | 2 | 23 | 2 | 10 | 6 | 2 | 2 | 1 | — | 1 | — |
Wind waves Height (m) Direction Period (s) | WNW 13 | SW 5 | W 12 | SW 6 | WSW 5 | W 5 | WNW 6 | WNW 6 | NW 7 | — | S 4 | WSW 4 | S 4 | WSW 3 | — | NNE 3 | NW 14 | WNW 12 | — | SSE 4 | SSE 7 |
| kJ | 965 | 35 | 464 | 216 | 200 | 174 | 294 | 294 | 179 | — | 40 | 10 | 28 | 2 | — | 3 | 238 | 230 | — | 22 | 420 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 677 | 0 | 432 | 1120 | 1009 | 862 | 658 | 600 | 66 | 24 | 63 | 63 | 63 | 65 | 53 | 24 | 65 | 24 | 93 | 75 | 24 |
Best forecast wave conditions in Orkney Islands | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mill Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Mill Bay Surf forecast
The above surf forecast table for Mill Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mill Bay can be found by selecting the local surf guide option on the grey menu. Our Mill Bay 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 (Mill Bay) 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 Mill Bay 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 Orkney Islands? If you are looking for accommodation near Mill Bay, camping, hotels and holiday cottages in Orkney Islands, consider staying in Kirkwall which is 27 km (17 miles) away. Other places in and around Orkney Islands where you can find information about places to rent, and car hire include Scrabster which is 78 km (48 miles) away and Wick, 83 km (52 miles) away.
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