

Eira is a reef dive located off the southern coast of Helsinki, Finland. The site features depths ranging from 20 to 47 metres, with shallower sections providing a calm environment for cold-water diving. Visibility typically fluctuates between 5 and 10 metres. Due to water temperatures ranging from 2 to 10 degrees Celsius, a drysuit and the proficiency to operate one are essential. Access is strictly by boat, and divers must remain vigilant for boat traffic. It is mandatory to deploy a surface marker buoy before ascending to the surface. Check locally for current boat access arrangements before planning your visit, as there are no fixed facilities on-site.
59.75183, 23.26850
A drysuit and the skills to use it confidently are essential here, even in summer, as temperatures can sit close to 2 degrees at depth. Check locally for up-to-date boat access arrangements before planning your visit, as facilities are not fixed on-site.
Directly from boat only.
Expected in this region. No sightings logged here yet.
Depth
20-47m
Visibility
5-10m
Entry
Boat
Boat required
Water Temp
2-10°C
Current
None
Best Time
Jun, Jul, Aug
The site ranges from 20 to 47 metres deep.
While entry-level certification allows access, the deeper sections are for advanced divers. The shallower reef areas are suitable for building cold-water experience.
Access to Eira is by boat only. Facilities are not fixed on-site, so check locally for current boat access arrangements.
Divers must use a drysuit and remain vigilant for boat traffic. Always deploy a surface marker buoy to alert boat operators of your position before ascending.
Diving at Eira in Hanko requires the following certifications: Advanced. Always dive within your training limits.
A drysuit recommended is recommended for diving at Eira in Hanko. Water temperatures range from 2°C to 10°C.
The best months to visit Eira in Hanko are June, July, and August. Conditions outside these months can still be good but are less predictable.
Visibility at Eira in Hanko typically ranges from 5 metres to 10 metres. Conditions vary with weather, tides, and seasons.