Portsmouth weather is set for a mild but changeable week, with sunny spells giving way to cloud and light rain this afternoon, temperatures peaking at 12°C today and gusty conditions returning by Thursday.
Today’s Forecast
Monday morning is largely dry with bright spells and patchy cloud across Portsmouth. Cloud is expected to thicken through the early afternoon, with outbreaks of light rain likely to spread in from the west by mid-afternoon. Rain chances reach 30% around 2pm, with a maximum temperature of 12°C. Despite feeling closer to 6°C due to westerly winds gusting up to 29mph, UV levels remain low and air quality is good. Visibility ranges from 1.2km to 23km throughout the day.
Tonight will remain cloudy with the odd spot of drizzle lingering before conditions turn dry closer to dawn. Winds will ease overnight, with temperatures staying mild at around 11°C.
Tuesday and Wednesday
Tuesday brings a largely cloudy but dry morning, with brighter spells expected to break through in the afternoon. Temperatures will reach a high of 12°C, with light winds of around 7–10mph making for a pleasant day. Wednesday is shaping up to be the best day of the week, with early morning mist and fog clearing to give way to largely sunny skies, very little chance of rain, and a milder high of 14°C.
Thursday to Friday: Wind and Rain Return
Conditions deteriorate heading into the latter part of the week. Thursday will turn increasingly cloudy and breezy, with rain chances climbing steadily through the day — reaching up to 70% by Thursday evening. Gusts could reach 34mph. Friday is expected to be the most unsettled day, arriving wet and windy with gusts potentially hitting 39mph in the early hours before skies begin to clear in the afternoon. Temperatures will drop back to around 8°C by Friday night.
Weekend Outlook
Saturday offers a drier and calmer interlude, with temperatures around 10–11°C and light winds of 6–12mph. Rain chances remain low through most of the day. Sunday turns slightly more unsettled again, with a 40% chance of rain returning by midnight and winds picking back up to around 15mph through the afternoon. Highs of 11°C are expected.
