The wicket-keeper batsman averaged 34 in eight County Championship in 2018.
Wheater is in his second stint with Essex after re-joining from Hampshire at the end of the 2016 season.
“I am delighted to commit my future to Essex County Cricket Club,” he said. “Since returning to Essex, I have been fortunate enough to experience success and I am keen, as we all are, to continue putting trophies in the cabinet.”
Essex head coach Anthony McGrath has challenged Wheater to step up following the retirement of fellow Essex wicketkeeper James Foster at the end of the 2018 season.
McGrath said: “Adam is an experienced campaigner and has shown us his capabilities behind the stumps and with the bat.
“It is now time for Adam to make the position his own and highlight to everyone what a valuable performer he can be.”Tags: Essex Cricket, Cricket
© TIME107.5fm 2015-2019. All rights reserved.