Residents in Portsmouth are enjoying a brief spell of warm and sunny weather this week, though conditions are set to turn cooler and more unsettled heading into the weekend. According to the Met Office, the city is experiencing temperatures well above the typical April average of 8°C to 15°C.
Wednesday, 8 April 2026, saw sunny conditions with a high of 20°C, though it felt closer to 17°C due to light winds. Thursday is expected to remain sunny with a high of 18°C, though residents should note that wind gusts are expected to increase to 30mph.
A notable change in the weather will arrive on Friday, 10 April, as temperatures drop to 12°C. This shift brings cloudier skies and a 20% chance of rain by the evening. The coming weekend will remain mixed, featuring sunny intervals, blustery winds with gusts reaching 32mph, and an increasing chance of rain, which rises to 50% on Sunday morning.
While the sunshine may be welcome, the Met Office has issued a red alert for hay fever across the UK. Pollen levels are forecast to be very high for the start of the week, with birch, ash, and plane pollen contributing to the discomfort of millions of sufferers across large parts of the country.
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