Businesses dependent on tourism are reporting a drop in turnover of 10 to 25 per cent.
However, experts say a recent warm spell, coupled with the success of Team GB, has seen a late surge in holiday spending.
It may be too late though for many businesses which are feeling the effects of prolonged bad weather, and people staying at home to watch the Olympics.
More top news
Showers easing with clear spells overnight. Strong winds easing.
Sunday forecast: Heavy rain is expected for a time with gusty winds, then clearing during the afternoon.
March in the Anglia region has been much drier and sunnier than normal although temperatures have been around average.