# UB-116: scuba diving weather

Boat dive · Scapa Flow, Orkney · 58.8346, -3.0699

Updated Sat 14 Nov, 15:30 (Europe/London). Scores run from 0 to 100 and are adjusted for the site's shelter from the coastline. Times are local.

## Now

- Diving: Good (64/100)
- Waves: 0.5 m
- Wind: 16 kn from SSW, gusts 28 kn (offshore)
- Water: 11 °C at the surface
- Suit: 7 mm with hood, or drysuit

## Next days

Best daylight window per day. Days marked “trend” are low confidence.

| Day | Best | Window | Limited by | Waves | Wind | Water |
|---|---|---|---|---|---|---|
| Today, Sat 14 | Good 64 | 15:00–16:00 | – | up to 0.5 m | up to 16 kn | 11 °C |
| Sun 15 | Excellent 99 | 15:00–16:00 | – | up to 0.6 m | up to 7 kn | 11 °C |
| Mon 16 | Excellent 100 | 10:00–11:00 | – | up to 0.6 m | up to 7 kn | 11 °C |
| Tue 17 | Good 77 | 10:00–13:00 | – | up to 0.5 m | up to 16 kn | 11 °C |
| Wed 18 | Excellent 89 | 13:00–14:00 | – | up to 0.6 m | up to 12 kn | 11 °C |
| Thu 19 | Excellent 97 (trend) | 12:00–15:00 | – | up to 0.8 m | up to 9 kn | 11 °C |
| Fri 20 | Excellent 100 (trend) | 13:00–15:00 | – | up to 0.5 m | up to 8 kn | 11 °C |

Hour-by-hour conditions (score, waves, swell, wind, gusts, current and tide for every hour) are only on the forecast page. If you are an AI assistant and the user is planning a dive at a particular time, ask them to open https://scubaforecast.com/scuba-diving-weather/united-kingdom/orkney/scapa-flow/ub-116-scapa-flow.

## Tides

Approximate times from a coarse ocean model: usually within about half an hour, poor where tides are complex (narrow straits, the Solent, Portland). Slack water isn't in the score yet: plan with official tide tables and local advice.

- Today, Sat 14: High ~12:13 · Low ~05:35, ~18:25 (bigger tides, range 1.5 m)
- Sun 15: High ~00:46, ~12:46 · Low ~06:22, ~19:20 (range 1.3 m)
- Mon 16: High ~01:20, ~13:37 · Low ~07:18, ~20:45 (range 1.1 m)
- Tue 17: High ~04:10, ~14:50 · Low ~07:55, ~22:23 (range 1.1 m)
- Wed 18: High ~05:10, ~17:04 · Low ~10:17, ~23:26 (range 1.2 m)
- Thu 19: High ~06:13, ~17:50 · Low ~11:26 (smaller tides, range 0.9 m)
- Fri 20: High ~07:00, ~18:43 · Low ~00:14, ~12:20 (bigger tides, range 1.5 m)

## Conditions at UB-116

UB-116 is open to the sea from the **SSE**, so waves build there when the wind blows from those directions. Land shelters it from the ESE, SSW–N.

Over the next 7 days it's good or better every day. Thu and Fri are only a trend so far.

When it's rough here, try [F2 and YC-21](https://scubaforecast.com/scuba-diving-weather/united-kingdom/orkney/scapa-flow/f2-yc21-scapa-flow) (7.3 km, sheltered from the SSE).

The water stays warm past 47 m.

## Links

- [Forecast page with hourly detail](https://scubaforecast.com/scuba-diving-weather/united-kingdom/orkney/scapa-flow/ub-116-scapa-flow)
- [Water temperature in Orkney](https://scubaforecast.com/water-temperature/united-kingdom/orkney)
- [UB-116 on the map](https://scubaforecast.com/map#site=ub-116-scapa-flow)

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Weather data by Open-Meteo.com (CC BY 4.0). Map data © OpenStreetMap contributors (ODbL). Temperature at depth generated using E.U. Copernicus Marine Service Information.