When To Go · Destination Guide

Scapa Flow (Orkney)

Descend through cold, clear history onto the warships of Scapa Flow

When to go

Best time to visit Scapa Flow (Orkney)

Scapa Flow is not a uniform yearround dive destination.

Best overall window

Longest practical activity window, broadest schedules and water warming toward about 13°C by midSeptember

Outside that window

Holiday periods can compress boat and lodging availability.

Start with the overall answer, then switch only when scuba, freedive, snorkel, or topside timing changes the trip in a meaningful way.

The overall row stays visible so you can compare it against the currently selected scope.

BestGoodTradeoffsMore variable

Scope	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Overall	Overall - Jan: More variable	Overall - Feb: More variable	Overall - Mar: More variable	Overall - Apr: Good	Overall - May: Best	Overall - Jun: Best	Overall - Jul: Best	Overall - Aug: Best	Overall - Sep: Best	Overall - Oct: Good	Overall - Nov: Good	Overall - Dec: More variable

These do not replace the overall planner. Use them only if a specific animal or event is driving your trip dates.

Autumn Wreck Visibility Lift
Best for Scuba
Sep to Nov
JanFebMarAprMayJunJulAugSepOctNovDec
As summer plankton declines, visibility on the fleet wrecks often improves.
Puffin Cliff Season
Best for Topside
Apr to Aug
JanFebMarAprMayJunJulAugSepOctNovDec
Puffins return to Orkney's breeding cliffs around April and May.
Summer Fish and Wreck Life
Best for Scuba, Snorkel
Jun to Sep
JanFebMarAprMayJunJulAugSepOctNovDec
Pollock and saithe numbers build as summer progresses, while the wrecks remain covered in benthic life.
Occasional Summer Basking Sharks
Best for Scuba, Snorkel, Topside
Jun to Aug
JanFebMarAprMayJunJulAugSepOctNovDec
Basking sharks are sometimes seen cruising at the surface in Orkney waters during summer.
Merry Dancers Dark-Sky Window
Best for Topside
Sep to Mar
JanFebMarAprMayJunJulAugSepOctNovDec
Longer nights create more opportunity to look for the Northern Lights, locally called the Merry Dancers.

Same-day route swaps become more likely when weather builds.
Wind Exposed Departures.
Book vessels, accommodation and vehicle ferry space early for May through September.

Jul to Aug: Summer has the broadest visitor services and warmer water, but plankton and holiday demand can affect visibility and availability.
Nov to Mar: Shorter days, stormier spells and reduced seasonal schedules require flexible, topside-led planning.

Built from climate references, access rules, and destination operators. Wildlife timing and route flexibility can shift year to year.