The first week of the Wimbledon Championships may see warmer than average temperatures, though current weather predictions indicate a decrease in the intense heat and humidity experienced recently. Wimbledon has a history of high temperatures during its fortnight, with the hottest day on record occurring on July 1, 2015, when temperatures in nearby Kew Gardens reached 35.7 degrees Celsius (96.3 degrees Fahrenheit). During the notably hot summer of 1976, nighttime temperatures on June 27 did not fall below 20.8 degrees Celsius (69.4 degrees Fahrenheit).
To address the impact of heat on players, the All England Club has implemented a heat rule. This rule allows players to request a ten-minute break if the heat stress index reaches 30.1 degrees Celsius (86.2 degrees Fahrenheit). The heat stress index is a measure that considers not only air temperature but also humidity, radiant heat from the sun, and the temperature of the court surface. This regulation has already been invoked during the qualifying rounds of the current tournament, highlighting its relevance in managing playing conditions.
Despite the potential for warm conditions, the forecast suggests that the heat and humidity will be considerably less intense than in some recent periods, offering a degree of relief for competitors. The event is no stranger to summer heatwaves, and the established protocols aim to ensure player safety and manage the challenging conditions that can arise.