Temperatures across the United Kingdom reached 35 °C [1] on July 29, 2026 [2], as a prolonged period of high heat persists.

This extended weather pattern is significant because it raises questions about the duration of the current hot spell and whether it meets the criteria for a formal heatwave. Persistent high temperatures can strain infrastructure and impact public health across the region.

Weather officials said that the heat is driven by a persistent high-pressure ridge located over northwestern Europe [3]. This atmospheric system is trapping warm air over the UK, preventing cooler air from moving in, and leading to an extended period of unusually high temperatures [3].

Southern England has reported the highest readings during this spell [3]. ITV weather presenter Amanda Houston said the heat will eventually subside and addressed inquiries regarding if this represents the longest hot spell in the nation's history [1].

While the peak temperature of 35 °C [1] was recorded on July 29, 2026 [2], meteorologists continue to monitor the high-pressure system to determine the likely end date of the event [3]. The stability of the ridge is the primary factor keeping the warmth in place across the country.

“Temperatures across the United Kingdom reached 35 °C”

The trapping of warm air by a high-pressure ridge suggests a stable atmospheric blocking pattern. When such systems remain stationary, they can lead to prolonged temperature anomalies that deviate significantly from seasonal norms, increasing the risk of drought and heat-related stress on the environment.