Åland Islands
Stora Herrö
About this Dive Site
Description
Discover the dramatic underwater cliffs and rugged rock formations surrounding Stora Herrö, an island dive site renowned for its impressive topography. This rich environment supports a healthy population of fish, and the chance to swim alongside curious seals adds to the allure.
Best Time to Dive
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2°C | 1°C | 3°C | 5°C | 9°C | 14°C | 17°C | 18°C | 16°C | 12°C | 8°C | 4°C |
Peak Season
June, July, August, September
Jan
Ice diving possible in sheltered areas
Feb
Ice diving possible in sheltered areas
Mar
Ice breaking up, potential for early season dives
Apr
Spring thaw, increasing marine life activity
More monthly highlights
May
Seals often seen, kelp forests starting to flourish
Jun
Good visibility, abundant fish life, potential for porpoise sightings
Jul
Peak summer diving, warm water, rich biodiversity
Aug
Excellent conditions, still warm, good chance of seeing various fish species
Sep
Autumn colors underwater, good visibility, seals
Oct
Wreck diving season, cooler water, good visibility
Nov
Late season diving, colder, but still potential for interesting finds
Dec
Ice formation likely, limited diving opportunities
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