What are the heat rules at Wimbledon?

The 2025 Championships will begin in Wimbledon on Monday, with record-breaking temperatures.

The record set in 2001, 29.3C, is expected to be broken.

Wimbledon has a heat rule for all singles matches in order to help ensure players are safe.

Wimbledon determines whether the heat rule should be upheld using the Wet Bulb Globe Temperature (WBGT) scale.

A heat stress monitor measures the heat index of the WBGT, which combines air temperature, humidity, and surface temperature.

Players will be allowed to take 10-minute breaks during a match if the WBGT is 30.1% or higher.

Even if matches have already begun when the WBGT exceeds 30. 1C, the heat rule applies to all singles competitions. For it to be enforced, just one player needs to request the 10-minute break.

The 10-minute break will be taken at the end of the third set for best-of-five-set matches in men’s singles. This is done at the end of the second set in best-of-three-sets matches.

Players are permitted to leave the court during breaks, but they are not permitted to go for coaching or medical care.

At 14:00 BST and 17:00 BST, WBGT readings at Wimbledon are taken 30 minutes before the start of play.

A best-of-three-sets match that has already finished one set will not be affected by a move that is carried over to the following day with the heat rule in place. Any best-of-five-sets matches that have won two sets will not be considered for this.

On Monday, it is anticipated to be 33C or 34C at Wimbledon.

It will easily be the Championships’ hottest opening day, breaking the previous record of 29.3C set in 2001.

On Tuesday, expect high temperatures in the low 30s once more.

The players and spectators will experience a heat index, or “feels like temperature,” that is closer to 37C, even though 33C or 34C is the maximum air temperature.

On the court, where airflow is more constrained, it might feel hotter.

However, we don’t anticipate the highest temperature ever recorded to occur during the Wimbledon fortnight, which was 35.7C on July 1, 2015.

The remainder of the week will be cooler, with some rain forecast for Wednesday and possibly the weekend.

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