Sherratt was put in charge of Wales after just two matches of the 2025 Six Nations following Gatland’s departure but lost his three games at the helm against Ireland, Scotland and then England – a record 68-14 defeat in Cardiff.
Jenkins will return to the Wales defence coach role he held under Wayne Pivac before he was deemed surplus to requirements when Gatland returned in December 2022.
“I’m delighted to have the opportunity to return and coach Wales again this summer,” said Sherratt.
“It’s an exciting prospect to go to Japan for two matches in July. We are all looking forward to getting into camp and starting preparations for our summer campaign.”
WRU chief executive Abi Tierney says they are grateful to Sherratt taking over the reins.
“The impact and positive difference he made to the squad in a very short period of time during the Six Nations was welcomed,” said Tierney.
“It was a tough campaign but we know we are in safe hands whilst we complete the final stages of our recruitment process for a new permanent head coach.”
Former Wales full-back Halfpenny would be involved for the first time as the kicking coach.
The 36-year-old ex-British and Irish Lion has left Harlequins and is expected to continue playing by joining French second division side Beziers next season.
