Surf Forecasts:
Mill Bay surf forecast from 17 Sep 2026:
- Most powerful swell: Friday 18 Sep, 1PM (local time) - 5.5ft (1.7m), 13s period, NW swell with 996 kJ wave energy.
Best Forecast Surf Conditions for Mill Bay this week:
The most powerful waves expected at Mill Bay in the next 16 days are 1.7m 13s and forecast to arrive on Friday (Sep 18) 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 2.4m 6s period and expected on Sunday (Sep 20) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Fri 18th Sep) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Mill Bay over the next 16 days.
Short Range ForecastHeavy rain (total 24mm), heaviest during Wed night. Very mild (max 14°C on Fri night, min 11°C on Thu night). Winds increasing (moderate winds from the S on Fri afternoon, near gales from the WSW by Sat afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Very mild (max 17°C on Mon night, min 10°C on Mon morning). Winds decreasing (gales from the WSW on Sat night, calm by Mon morning). | ||||||||||||||||||||
Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 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) | N 8 | N 8 | N 8 | N 8 | NNW 7 | NNW 6 | N 8 | N 8 | N 8 | WNW 6 | WNW 6 | NW 13 | NNW 6 | NNW 7 | NNE 8 | N 7 | NNE 8 | NNE 8 | NNE 8 | N 8 | N 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 31 | 21 | 12 | 5 | 40 | 4 | 1 | 1 | 1 | 0 | 0 | 837 | 48 | 34 | 19 | 17 | 21 | 23 | 13 | 5 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | off | off | off | cross-on | cross | cross | off |
High Tide | 2:55PM2.09m | 3:31AM1.99m | 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 | ||||||||
Low Tide | 8:28AM0.78m | 8:49PM0.76m | 9:08AM1.00m | 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 | |||||||
 |  |  |  |  | | | | |  | |  | | | | | | | | | | |
 | 6:41 | — | — | 6:43 | — | — | 6:46 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — |
 | — | 7:25 | — | — | 7:22 | — | — | 7:20 | — | — | 7:16 | — | — | 7:14 | — | — | 7:10 | — | — | 7:07 | — |
mm | — | 3 | 6 | 1 | — | 4 | 2 | 1 | 1 | — | — | — | — | — | 1 | — | — | 3 | — | — | — |
Temp °C | 12 | 12 | 12 | 13 | 13 | 14 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 11 | 17 | 17 | 17 | 12 | 11 | 11 | 11 |
Feels °C | 3 | 3 | 1 | 5 | 7 | 5 | 1 | 0 | -1 | -1 | 1 | 3 | 9 | 6 | 15 | 15 | 15 | 9 | 5 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | N 8 | N 8 | S 6 | S 6 | WNW 12 | SSE 6 | SSE 7 | SSE 7 | S 7 | S 6 | S 7 | NW 13 | NNW 6 | NNW 7 | NNE 8 | N 7 | NNE 8 | WNW 10 | NNE 8 | N 8 | WNW 13 |
| kJ | 31 | 20 | 29 | 6 | 237 | 72 | 47 | 29 | 32 | 7 | 1 | 7 | 48 | 34 | 19 | 17 | 21 | 35 | 13 | 5 | 202 |
Swell 2 Height (m) Direction Period (s) | WNW 10 | N 8 | N 8 | N 8 | NNW 7 | N 8 | N 8 | N 8 | N 8 | SSE 7 | S 6 | SW 5 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | WNW 10 | NNE 8 | SSE 5 | SE 5 | N 7 |
| kJ | 20 | 21 | 12 | 5 | 40 | 1 | 1 | 1 | 1 | 5 | 1 | 1 | 94 | 53 | 23 | 20 | 19 | 23 | 2 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | WNW 5 | N 6 | N 8 | S 7 | N 8 | NNW 6 | N 8 | — | — | — | — | S 7 | SW 5 | NNE 8 | NNW 6 | N 9 | W 9 | SSE 3 | N 8 | SSE 5 | — |
| kJ | 3 | 1 | 12 | 1 | 1 | 4 | 1 | — | — | — | — | 1 | 1 | 6 | 4 | 7 | 2 | 1 | 12 | 2 | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | SSW 6 | W 15 | WNW 14 | SW 5 | WSW 5 | WSW 5 | WSW 6 | W 6 | WNW 6 | WNW 6 | NW 13 | W 3 | — | SW 2 | SSW 3 | S 4 | WNW 3 | WNW 14 | WNW 14 | WNW 3 |
| kJ | 91 | 202 | 1787 | 1144 | 31 | 77 | 193 | 237 | 298 | 368 | 249 | 837 | 2 | — | 2 | 3 | 8 | 3 | 253 | 303 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 432 | 538 | 595 | 506 | 63 | 356 | 879 | 879 | 830 | 658 | 500 | 66 | 24 | 24 | 43 | 63 | 63 | 281 | 65 | 53 | 24 |
Best forecast wave conditions in Orkney Islands | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
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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