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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Southampton Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above before heading out on Portland, as conditions can shift quickly around the Chesil Beach coast. The Met Office for Portland typically shows a mild, breezy maritime climate, with sea fog often lingering into late morning during spring and summer.
What is the Met Office forecast for Portland today?
The live forecast above gives the most accurate hour-by-hour picture for Portland, including wind speeds that matter for harbour users and walkers on the Bill. The Met Office’s local data for Portland Harbour and Weymouth Bay often differs from inland Dorset due to the sea’s moderating effect, so always check the coastal-specific outlook rather than a county-wide summary.
How reliable is the long range weather for Portland Dorset?
Long range weather for Portland Dorset beyond five days carries lower confidence because the peninsula’s exposed position makes it sensitive to small shifts in Atlantic pressure systems. For planning trips to Portland Harbour or the Chesil Beach nature reserve, the Met Office’s 14-day trend is useful for spotting settled spells, but the live forecast above remains your best guide for actual conditions.
Does the Met Office have a specific forecast for Portland Harbour?
Yes, the Met Office provides a coastal forecast for Portland Harbour, including tide times and wind direction. This is separate from the general town forecast and is updated several times daily for sailors and harbour users.
How does Portland’s weather compare to Weymouth?
Portland is often 1–2°C cooler than Weymouth due to its exposed position, and it receives more cloud and stronger winds. The Met Office weather for Weymouth and Portland is usually combined in regional summaries, but localised differences matter for outdoor plans.
Can I get a 14-day forecast for Portland from the Met Office?
The Met Office publishes a 14-day outlook for Portland, but confidence drops significantly after day five. For weather Portland Dorset 14 days ahead, treat the later part as a broad trend rather than a precise prediction.
Sources
For more local outlooks, see our UK weather hub or the Bristol Weather page for regional context. If you’re planning further ahead, the 10 Day Weather Forecast UK page offers a broader view.