Porthkerris
Porthkerris in the United Kingdom is a popular dive site with an on-site dive centre that offers boat charters, air fills, a shop, and the Porthkerris Beach Cafe. It is a fantastic location for both divers and snorkelers alike. The bay at Porthkerris is known for its diverse marine life, with sightings of dolphins, seals, and even whales and basking sharks during the appropriate seasons.
Underneath the water's surface, divers can explore a vibrant ecosystem. Amongst the kelp, you can find fascinating creatures such as cuttlefish, octopus, and various types of anemones like strawberry and snakelock anemones. Wrasse, pollock, and other predators can also be spotted hunting shoals of sand eels, adding to the excitement of the dive.
With a maximum depth of 13m and visibility reaching up to 6m, Porthkerris is suitable for divers of all levels, from beginners to advanced. This dive site is conveniently located near Portkerris Divers, situated in Pengarrock Hill, Porthallow, St Keverne, Porthoustock, Cornwall, South West England, England, TR12 6QJ, United Kingdom.
Immerse yourself in the wonders of Porthkerris and experience the rich underwater world this dive site has to offer.
Underneath the water's surface, divers can explore a vibrant ecosystem. Amongst the kelp, you can find fascinating creatures such as cuttlefish, octopus, and various types of anemones like strawberry and snakelock anemones. Wrasse, pollock, and other predators can also be spotted hunting shoals of sand eels, adding to the excitement of the dive.
With a maximum depth of 13m and visibility reaching up to 6m, Porthkerris is suitable for divers of all levels, from beginners to advanced. This dive site is conveniently located near Portkerris Divers, situated in Pengarrock Hill, Porthallow, St Keverne, Porthoustock, Cornwall, South West England, England, TR12 6QJ, United Kingdom.
Immerse yourself in the wonders of Porthkerris and experience the rich underwater world this dive site has to offer.
Diving Conditions Score for Porthkerris
5.8
AverageAverage conditions, be alert.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Porthkerris
Depth
13m
Visibility
6m
Experience Level
beginner
advanced
Weather Conditions for Porthkerris
Wave Height
0.96m
Wind Speed
9.7 m/s
Water Temp
16.9°C
Visibility
34.5km
Cloud Cover
100%
Wave Period
4.75s
Air Temperature
19.1°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Porthkerris
Alpha
Dive Score Chart for Porthkerris
Best time to dive: 13:00 with score 7.376666666666666/10. Water conditions: Waves 1.04m, Wind 3.2 m/s.Best night dive time: 0:00 with score 6.754908424908424/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Porthkerris: 06:00
Sunset at Porthkerris: 18:00
Optimal diving conditions at Porthkerris 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.
Best Overall
13:00Score: 7.4/10
Waves: 1.04m (4.4s), Wind: 3.2 m/s
Best Night
0:00Score: 6.8/10
Waves: 0.62m, Wind: 12.6 m/s
Seasonal Analysis for PorthkerrisAlpha
Historical patterns and best seasons for diving at Porthkerris
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 Porthkerris
Winter
Avg. Score: 10.0/10
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Porthkerris
January
Score: 10.0
February
Score: 10.0
December
Score: 9.9
Ideal Conditions for Porthkerris
Water Temp
25.0°C / 77.0°F
June
Visibility
20.1m / 65.9ft
October
Wave Height
0.2m / 0.7ft
January
Wave Period
8.0s
January
Seasonal Insights for Porthkerris
Porthkerris shows typical northern hemisphere patterns with June being the warmest month (25.0°C) and December the coldest (21.0°C). The calmest conditions typically occur in January with average wave heights of 0.2m and wave periods of 8.0s. The most comfortable wave conditions are in January 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). January is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during January to March, 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 22, 2026
Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.
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