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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Public Journal weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Checking the live forecast above for Merstham gives the most accurate hour-by-hour outlook, but expect a changeable day with bright spells followed by patchy rain moving in from the Surrey Hills by late afternoon.
What is the weather doing in Merstham today?
Merstham, near Redhill and just north of the M25, sits on the edge of the North Downs. The live forecast above shows a morning with cloud breaking to sunny intervals, though a band of rain is likely to push east across the Surrey Weald by mid-afternoon. Temperatures will be close to average for the time of year, with winds staying light from the south-west. Any rain should clear by the evening, leaving a dry, chilly night.
Will it affect travel or plans in the area?
Roads through Merstham, including the A23 and the M23 spur, should be fine in the morning, but the late-afternoon rain may slow journeys towards Redhill and Reigate. If you are heading out for a walk on the North Downs, take a jacket — the rain will arrive quicker than the live forecast above suggests. For a wider look at conditions across the South East, see the UK weather hub.
Will Merstham see any frost tonight?
Clear skies after the rain clears mean temperatures could dip close to freezing in the early hours. The live forecast above will show the overnight low, but cover any tender plants if you are in the lower parts of the village.
Is this rain part of a weather front on bbc news?
Yes, this rain comes from a weak Atlantic front moving east, often mentioned on the South East weather segment of bbc news. It will clear by midnight, leaving a fair start on Friday.
How does Merstham compare with Reigate or Redhill today?
Conditions across the three are very similar, though Merstham, being slightly higher on the escarpment, may see a couple of minutes’ less rain. For a comparison further north, check the Birmingham Weather page.