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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the StoryShift weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Blackwater, on the Isle of Wight, enjoys a temperate maritime climate. The live forecast above shows today’s conditions, but for a trip, July and August offer the warmest sea breezes, while May and June bring the most reliable sunshine.
When is the best time to visit Blackwater for weather?
The most settled weather in Blackwater runs from May to September, when average highs range from 17°C to 22°C. July and August are the warmest months, but they also coincide with school holidays, so expect busier beaches and higher accommodation prices. For a quieter visit with still-pleasant conditions, late June or early September offer good value.
What should I pack for a trip to Blackwater?
Given the island’s changeable coastal weather, layering is key. Pack a waterproof jacket and a warm mid-layer even in summer, as sea breezes can drop temperatures quickly. In spring and autumn, sturdy walking shoes and a fleece are essential. Sunscreen and a sun hat are wise for the brighter days from May to August.
Is Blackwater often windy?
Yes, the exposed coastal position means a moderate breeze is common, especially in spring and autumn. Winds are generally lighter in summer, making it more pleasant for beach walks.
Does Blackwater get fog?
Fog is occasional, particularly in autumn and winter when cooler air meets the warmer sea. It typically clears by late morning, so it rarely spoils a full day out.
Can I swim in the sea at Blackwater?
The water is swimmable from June to September, when sea temperatures reach 16–18°C. Check local tide times and the live forecast above for safe conditions.
For more on UK conditions, see our UK weather hub or check the 10 Day Weather Forecast UK.