2013 Great Britain and Ireland heatwave

The 2013 heatwave in the United Kingdom and Ireland was a period of unusually hot weather primarily in July 2013, with isolated warm days in June and August. A prolonged high pressure system over Britain and Ireland caused higher than average temperatures for 19 consecutive days in July, reaching 33.5 °C (92.3 °F) at Heathrow and Northolt.

Following a brief period of cooler weather at the end of July, temperatures temporarily rose again, peaking at 34.1 °C (93.4 °F) on 1 August in the United Kingdom, the warmest the UK had seen since July 2006. Temperatures reached 31 °C (88 °F) in Ireland. At 19 days, the July heatwave was the longest continuous period of hot weather in the UK since August 1997.