Greencastle Shore
Prepare to be amazed by the abundance of marine life that thrives here, including an array of crustaceans such as shore crabs and lobsters. As you explore the depths, keep an eye out for the graceful presence of catsharks and colorful wrasse, commonly spotted in these waters.
Greencastle shore is the ideal open water training site for both beginners and advanced divers, offering unparalleled ease of access and an opportunity to witness the wonders of the marine world. Practice your diving skills in the sandy intertidal area, a perfect spot for honing your technique. When you're ready for a more adventurous dive, embark on an exploration of the captivating seaweed beds, rocky areas, and deeper rubble, where you may be fortunate enough to encounter some impressive lobsters.
With a visibility of up to 4 meters and a maximum depth of 8 meters, this diving site in the United Kingdom guarantees an unforgettable underwater experience. Conveniently located near Greencastle B & B on Greencastle Pier Road in Greencastle, County Down, Northern Ireland, it's easily accessible for divers of all levels.
Don't miss out on the opportunity to dive into the wonders of Greencastle shore. Book your diving adventure today and immerse yourself in the captivating marine life and remarkable underwater landscapes that await you.
Diving Conditions Score for Greencastle Shore
Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Greencastle Shore
Depth
8m
Visibility
4m
Experience Level
Weather Conditions for Greencastle Shore
Wave Height
0.16m
Wind Speed
5.8 m/s
Water Temp
15.4°C
Visibility
32.86km
Cloud Cover
0%
Wave Period
3.05s
Air Temperature
16.8°C
Precipitation
0 mm
Dive Score Chart for Greencastle Shore
Best time to dive: 7:00 with score 8.535/10. Water conditions: Waves 0.22m, Wind 1.4 m/s.Best night dive time: 23:00 with score 8.083636559139785/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Greencastle Shore are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.
Score: 8.5/10
Waves: 0.22m (3.2s), Wind: 1.4 m/s
Score: 8.1/10
Waves: 0.18m, Wind: 1.1 m/s
Seasonal Analysis for Greencastle ShoreAlpha
Historical patterns and best seasons for diving at Greencastle Shore
The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.
Monthly Dive Score Analysis - Seasonal Diving Conditions
Higher values indicate better diving conditions
Seasonal DiveScore Chart
This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.
Higher values indicate better diving conditions
Best Season for Greencastle Shore
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Greencastle Shore
Ideal Conditions for Greencastle Shore
Water Temp
15.8°C / 60.4°F
July
Visibility
16.9m / 55.4ft
December
Wave Height
0.6m / 2.0ft
December
Wave Period
8.0s
January
Seasonal Insights for Greencastle Shore
Greencastle Shore shows typical northern hemisphere patterns with July being the warmest month (15.8°C) and December the coldest (0.5°C). The calmest conditions typically occur in December with average wave heights of 0.6m and wave periods of 8.0s. The most comfortable wave conditions are in December with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). August is usually the driest month with 0.3mm of precipitation. For beginners, the best time to visit would be during December to February, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.
Last updated: 1 min. ago - Jun 23, 2026