Hope Cove tends to have its own microclimate. Often in the winter, there will be snow on Dartmoor while it's sunny and clear here, and, in fact, most years snow is unknown in this part of South Devon.
The nearest tide times are for Salcombe; there is virtually no difference in time or height. The tide times are particularly useful if you are visiting Burgh Island. When the tide is in, you can only reach it by sea tractor.
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For predications up to seven days for the tides in Salcombe (the nearest port) visit the EasyTide website