The Great British summertime is famous for its unpredictable weather! In 99% of chances, the performance will continue come rain or shine. In cases of heavy rain, it may be necessary to halt the performance for a short period. In the unlikely circumstance of extreme weather (including extreme heat), the performance may be postponed until a further date.  Do please dress for the weather accordingly! If possible, try to avoid bringing umbrellas as they can block sight-lines for other audience members. Raincoats and ponchos are just as fetching - St Paul's can provide free ponchos for audience members without any suitable cover!