Cornwall water temp and sealife overview

Cornwall has a wonderfully diverse and rich marine environment, an environment that changes throughout the year. We are often asked ‘when is the best time to freedive in Cornwall’, and there really is no right answer, it just depends on what you are looking for.

In the winter the water can be clear but often the storms make inshore water very murky, there is also very little fish life. In the spring, when the storms have died off, the water can be very clear (the clearest all year )… still cold though. In the summer the water is the warmest, with the most fish life and with good visibility.

The basking sharks come in during the spring months, following the plankton bloom that can make the water a bit murky for a few weeks during late May. They will stay about all summer but in fewer numbers.

We also get the spring spider crab migration at the same time, coming in droves to mate in shallow water.

As summer approaches the plankton drops and the water clears up again, but now with more fish than at any other time of the year. Shoals of seabass can be seen darting across the reefs and if you are really lucky Dolphins, shark and Sunfish!

Below is a chart which we have put together to give you an idea what to expect down here, throughout the year.

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Thankyou to everyone who visited during 2020. We hope that 2021 season will be easier but just in case and until things change our 2020 covid restrictions will be in place.

Course numbers will be limited to rule of 6 and all social distancing and hygiene measures will be adhered to in non emergency circumstances.

Bookings are being taken and we will now be allowing course date changes if available up until 1 week before the course start in the case of a change of government policy or guidelines.

Please be sure that if you need accommodation to attend, that this is secure, as we cannot refund due to a change in your accommodation choices.

Due to the restriction surrounding social distancing some elements of the advertised courses may differ, such as boat use and pool use. Please also note that until guidelines change in regards to travel in vehicles outside of your family unit or bubble you will need to transport yourself to and from dive sites. 

Our standard terms and conditions apply to refunds and cancellations.

We are looking forward to diving with you