July 2024 becomes London’s first rainless month since records began

London experienced its first rainless month in recorded history this July. Kew Gardens, which has maintained weather records since 1871, registered no measurable rainfall for the entire month. The Environment Agency’s Hogsmill rain gauge in Surbiton also recorded zero precipitation, as reported by London Centric.

While brief showers occurred in parts of the capital, they were not sufficient to register on official gauges. The absence of rainfall follows a pattern of increasingly dry summers, with London’s ageing infrastructure ill-equipped to manage prolonged drought conditions. Thames Water has not yet issued a hosepipe ban but has urged customers to use water responsibly.

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Why this matters for Londoners

London’s water supply relies heavily on reservoirs and groundwater, both of which are vulnerable to extended dry spells. The last significant drought in 2022 led to temporary usage restrictions, and experts warn that climate change will increase the frequency of such events. The Greater London Authority has not yet announced contingency plans, but residents in areas with older pipe networks may face higher risks of leaks or supply disruptions.

The dry conditions also pose challenges for green spaces and urban drainage. Parks and gardens, including those in Barnet, are already showing signs of stress, with browning grass and wilting plants. The London Fire Brigade has warned of elevated wildfire risks, particularly in outer boroughs with large wooded areas.

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What happens next

Thames Water will continue to monitor reservoir levels and may introduce temporary restrictions if the dry spell persists. The Environment Agency has not scheduled an emergency meeting but has stated it will review the data in early September. Residents are advised to check for updates on water usage guidelines via the Thames Water website or local council bulletins.

No formal policy changes have been proposed by the Mayor of London’s office. However, the dry conditions may accelerate discussions on long-term water resilience, including potential investments in desalination plants or expanded reservoir capacity. Barnet Council has not yet issued specific guidance for residents but has encouraged water conservation measures.