

Best for intermediate divers, 10-18m, boat entry, mild current.
The Letterbox is a wall and reef site located in Dingle Bay Reefs, Ireland. Divers explore a depth range of 10 to 18 metres, with an average depth of 15 metres. Access is by boat only, and the site is suited to intermediate divers comfortable with mild currents and potential surge. Visibility varies between 10 and 30 metres. Water temperatures range from 9C to 15C, making a drysuit recommended for the 45-minute typical dive duration. The habitat supports a variety of temperate marine life, including reef fish and invertebrates typical of the southwest coast. Always monitor Atlantic swell conditions, as they can significantly affect the comfort of the dive.
52.32497, -10.07117
Check the sea state carefully before committing to the boat trip, as Atlantic swell can make the entry and the dive uncomfortable even when winds appear light onshore. Confirm current facility availability locally before you travel, as provisioning on this stretch of coast varies.
Boat access is the norm for the Skellig Coast, with Portmagee being the main departure point for trips.
Recorded at this site
Depth
10-18m
Visibility
10-30m
Skill Level
Intermediate
Entry
Boat
Boat required
Water Temp
9-15°C
Current
Mild
Typical Dive
45 min
Best Time
Apr, May, Jun, Jul, Aug, Sep, Oct
The site supports a range of temperate marine life, including various reef fish and invertebrates common to the region.
The site is rated for intermediate divers who are comfortable managing surge and variable visibility in cold water conditions.
The site features a depth range of 10 to 18 metres, with an average depth of 15 metres.
The Letterbox requires boat access; shore entry is not possible.
This site is designed for scuba diving and is not suitable for snorkelling due to the depth and exposure to Atlantic swell.
Diving at The Letterbox in Kerry requires the following certifications: Open Water. Always dive within your training limits.
A drysuit recommended is recommended for diving at The Letterbox in Kerry. Water temperatures range from 9°C to 15°C.
The best months to visit The Letterbox in Kerry are April, May, June, July, August, September, and October. Conditions outside these months can still be good but are less predictable.
The Letterbox in Kerry typically has mild currents that most divers can handle comfortably.
Visibility at The Letterbox in Kerry typically ranges from 10 metres to 30 metres. Conditions vary with weather, tides, and seasons.