In the UK pubic holidays cluster together. There are three around Christmas - Christmas Day, Boxing Day and New Year's Day; there ar two at Easter - Good Friday and Easter Monday; there are two in May - May Day (first Monday) and late Spring (last Monday) and there is one on its own in August (late Summer, last Monday). All of these apart from the last are at a time of year where good weather is at best a fifty-fifty shot and at worst very unlikely. This gives rise to the unwritten rule that Bank Holiday weather won't be up to much.
This Bank Holiday is proving the rule. Heavy rain showers have been the order of the day, and in addition to that it is pretty cold outside!