The 24-year-old limped off in the first-half with his side trailing 1-0 at Bournemouth on Sunday, before goals from Dele Alli, Son Heung-min and Serge Aurier helped Mauricio Pochettino’s men bounce back to win 4-1 and move up to third in the Premier League.
Tottenham announced details of the “preliminary assessments” in a short statement on the club’s official website on Wednesday afternoon.
The club tweeted: “Preliminary assessments have confirmed that @HKane has damaged lateral ligaments in his right ankle.”
“The England striker sustained the injury following a challenge in our 4-1 win over Bournemouth on Sunday and is expected to return to First Team training next month.”
Kane, who has scored 39 goals this season for club and country, posted an optimistic message on his official Twitter page as he targeted a speedy return.
“Disappointing to be out until next month but injuries are part of the game. Will do everything I can to get back out there asap,” Kane wrote on his Twitter account.
Kane’s injury sparked fears of a lengthy absence with just three months to go until the start of the World Cup in Russia.
While the club’s recent update on Kane’s injury is positive for England, it is a major blow for Spurs, who are chasing a top-four place in the Premier League in order to qualify for next season’s Champions League.
The forward suffered ligament damage to the same ankle twice last season, missing seven weeks between September and November and then a further four weeks in the spring.
This time around, Kane will miss this month’s friendlies against the Netherlands and Italy plus at least three Tottenham games – the FA Cup quarterfinal at Swansea City on Saturday and the Premier League fixtures against Chelsea and Stoke City.