A quick referrence & see the BV Climate Policy attached below:-

4.  (a)  When the court temperature reaches 30oC competition   

Organisers must consider implementing and where the court temperature reaches 35oC, must implement the following timing rules: 

If a game is played in halves,

the game time must be reduced by 2 minutes per half with 2 team timeouts per half.

The clock must stop for each timeout and the referee must call an additional compulsory timeout close to the half way mark in each half.

Each team must call a timeout before the compulsory timeout and after the compulsory timeout. In the event the coaches do not call a timeout as required, the referees will intervene and call a timeout and attribute them to the respective teams.

(b)  When the court temperature reaches 40C games must be abandoned. 
Subject to any rule or ruling by a competition organiser,
 
(i) if a game is abandoned before it commences or before or at half time it is counted as a draw;
 
(ii) if a game is abandoned after half time, the game score stands as a final result. 
 

Climate-Policy.pdf