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Despite the grey weather Sophie looked radiant in a turquoise coat dress and nude heels and was seen beaming out from under her large cobalt umbrella.
The rain also didn't deter the scores of flag-waving royal fans turned out the greet the couple in the historic market square which features a statue of King Alfred, who was the King of Wessex.
Sophie and Edward have been touring the Saxon kingdom of Wessex to mark the Earl's 50th birthday and earlier in the day they visited Dorchester Abbey, where the Oxford Historic Churches Trust was also celebrating its 50th.
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"They are just so lovely and normal," said local resident Gillian Hood, who looked on as Sophie helped cut a birthday cake. "They seemed genuinely keen and interested in what we are doing for OHCT."
Another local of the Oxfordshire town described meeting the couple as "an absolute delight".
Prince Edward and wife Sophie delight locals on visit to Isle of Wight
Prior to their day out on Friday, Sophie and Edward conducted a royal visit to Gloucestershire.
The duo, who are parents to Lady Louise Windsor and James, Viscount Severn, toured the Three Choirs Vineyards in Newent where they sampled some English sparkling wine.
The day of engagements also saw Edward go underground to view the Clearwell Caves and meet with their owners, the Wright family.
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