Talland Bay
For snorkeling enthusiasts, Talland Bay is also a fantastic destination, particularly during high tide. Exploring the bay reveals hidden treasures, including the Marguerite wreck. This wreck, a 220-ton steam trawler from Boulogne, met its unfortunate fate in 1922 when it ran ashore in the bay during inclement weather. During low tide, divers can witness the boiler resting among the rocks, with additional wreckage scattered in the gullies further out.
Located in St Tallan, Bridals Lane, Talland Bay, Polperro, Porthallow, Cornwall, South West England, England, PL13 2JA, United Kingdom, this dive site is easily accessible and offers a memorable underwater adventure for divers of all skill levels.
Diving Conditions Score for Talland Bay
Challenging conditions, for experienced divers only.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Talland Bay
Depth
9m
Visibility
7m
Experience Level
Weather Conditions for Talland Bay
Wave Height
0.62m
Wind Speed
10.1 m/s
Water Temp
15.8°C
Visibility
1.16km
Cloud Cover
100%
Wave Period
5.65s
Air Temperature
17.8°C
Precipitation
0.8 mm
Dive Score Chart for Talland Bay
Best time to dive: 16:00 with score 7.1743579710144925/10. Water conditions: Waves 0.56m, Wind 9.4 m/s.Best night dive time: 19:00 with score 7.2917565217391305/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Talland Bay 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: 7.3/10
Waves: 0.5m (5.75s), Wind: 2.9 m/s
Score: 6.9/10
Waves: 0.64m (5.65s), Wind: 5.4 m/s
Score: 7.2/10
Waves: 0.56m, Wind: 9.4 m/s
Seasonal Analysis for Talland Bay Alpha
Historical patterns and best seasons for diving at Talland Bay
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 Talland Bay
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Talland Bay
Ideal Conditions for Talland Bay
Water Temp
18.0°C / 64.4°F
August
Visibility
14.9m / 48.9ft
January
Wave Height
1.0m / 3.3ft
January
Wave Period
8.0s
January
Seasonal Insights for Talland Bay
Talland Bay shows typical northern hemisphere patterns with August being the warmest month (18.0°C) and December the coldest (2.1°C). The calmest conditions typically occur in January with average wave heights of 1.0m 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). August 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 20, 2026