It goes without saying that the weather is the only thing we can't arrange for you! It is especially uncertain between May and October, which is not to say it rains all the time, but there are days we can't get you to where we planned, or maybe even go out at all, as safety is our first concern at all times.
However, we only cancel trips if the sea is too rough and thus unsafe, and if possible rather than cancelling, we would change to a more accessible location or offer a land based trip instead. Our booking policy is therefore as follows:
If you have a confirmed booking for a trip which cannot proceed due to dangerous weather conditions (cf just rain), we will either change the location and take you somewhere it is safe to go, or else if we know from weather warnings the day before we can offer you another date during your stay. If neither is possible, we will take you on a trip on land instead, and make any price adjustments accordingly.