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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Trade Wire UK weather desk. Data from national met services via Open-Meteo.
For Horndean, the live forecast above shows the current conditions and what to expect over the coming hours. The village sits on the South Downs, so be prepared for localised cloud and a slightly cooler breeze than nearby Portsmouth.
What is the weather in Horndean looking like today?
Based on the live forecast above, Horndean’s weather today reflects its inland position on the A3 corridor. While the south coast often sees milder air, the village can experience its own microclimate, particularly with mist lingering in the valleys on calm mornings. If you’re heading south into Waterlooville or towards Havant, conditions often improve quickly.
How does this compare with the Met Office outlook?
The Met Office weather Horndean updates frequently and tends to align with the live forecast above, though it may offer a slightly longer-range view. For the coming days, expect a typical May mix – some sunshine, but also the chance of a brief shower, especially as low pressure moves in from the Atlantic. Keep an eye on the radar if you’re planning outdoor work or a walk.
Is Horndean usually warmer or cooler than the south coast?
Generally, Horndean sits slightly higher and further inland, so it can be a degree or two cooler than coastal spots like Southsea. However, it also escapes the strongest sea breezes, making afternoons feel more settled in summer.
Where can I find the latest BBC News weather for this area?
The BBC News weather page for Horndean pulls data from the Met Office, but the live forecast above gives you the most current hour-by-hour view. For Portsmouth-specific detail, check bbc weather portsmouth which often mirrors local conditions.
Will the forecast change much during the day?
Yes – especially in spring and autumn. Horndean’s South Downs location means cloud can roll in from the west quickly, so the live forecast above may shift by lunchtime. Checking back after breakfast is recommended.
For a broader outlook, visit our UK weather hub or check the 10 Day Weather Forecast UK. You might also find the Bristol Weather page useful if you’re travelling west.