People in Portsmouth, Hampshire, can look forward to a stretch of unseasonably warm and sunny weather this week before a cooler change arrives on Monday, 23 March 2026. According to the Met Office, temperatures are expected to reach highs of 18°C today, Thursday, 19 March 2026.
These bright and sunny conditions are predicted to continue throughout the coming weekend. Light winds will accompany the long sunny spells on Saturday and Sunday, making it a pleasant time for outdoor activities across the coastal city.
The warm spell is expected to end early next week as the weather becomes cloudier and more unsettled. Starting on Monday, 23 March 2026, residents will likely notice strengthening winds and a significant drop in temperature that will feel noticeably cooler.
Forecasters suggest that the final week of March could bring changeable conditions to many parts of the country. This period may also include some widely windy weather as the region moves into more typical spring weather patterns.
