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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the BritainNow weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above before heading out in Newhaven today, as conditions along this stretch of the Sussex coast can shift quickly with sea breezes and incoming weather fronts.
What’s the outlook for Newhaven today and this week?
The live forecast above gives you the most accurate picture for the next few hours and days. Newhaven’s coastal position means it often feels cooler than inland towns, especially when a brisk wind comes off the English Channel. If you’re planning a walk along the beach or a trip over to Peacehaven, keep an eye on the wind direction—south-westerlies tend to bring cloud and occasional drizzle, while northerly winds can clear the skies but drop the temperature noticeably.
How does Newhaven’s weather compare to nearby towns?
Newhaven shares a similar climate to Peacehaven and Seaford, but local geography plays a part. The River Ouse estuary can trap mist on calm mornings, and the cliffs around the port can create localised wind gusts. For a broader view of conditions across the region, check our UK weather hub or the 10 Day Weather Forecast UK page.
Is the weather in Newhaven usually different from Peacehaven?
Only slightly. Peacehaven sits a little higher on the cliffs, so it can be a degree or two cooler and breezier. Newhaven’s harbour area is more sheltered, but both places follow the same general coastal pattern.
How reliable is the weather in Newhaven 10 days forecast?
A 10-day forecast gives a useful trend but becomes less precise after day five. For Newhaven, check the live forecast above daily, especially if you’re planning outdoor activities like sailing or fishing.
Does the sea fog affect Newhaven often?
Sea fog, or haar, can drift in during spring and summer when warm air meets the cooler Channel. It usually clears by late morning, but it can reduce visibility around the port and cliffs.