Portland Harbour

United Kingdom8 m maxbeginner

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Conditions & tides

Channel site — tidal current funnels through here and can run fast, changing quickly with the tide. It is usually strongest around mid-tide and eases near the slack windows below. Dive with a local operator who knows the timing.

Portland HarbourUnited Kingdom · 8 m

Good · 5/5

conditions visualisation

Good5/5

Calm and diveable right now — best window today 6 AM–7 PM.

Wind10 kn ESE

Current~0.3 kn W · model

Swell

0.2 m · 8s · WSW

Water

18 °C

Conditions through the day

5 AM8 PM

Calmest current near slack — 11:15 AM & 11:45 PM local

Sunrise 05:58 AM · Sunset 06:05 PM local

Show details

Tide · local

Outlook — select a day for full conditions

On-face swell 0.1 m — the component of the swell aimed at this site’s exposed face. Strong-current reef: plan a drift and enter near the slack windows above. Current is a regional model value (Copernicus, ~9 km grid) — a guide to the area, not a precise reef measurement. Imagery © Esri · not depth or visibility.

Scored by DiveConnect's site-physics model

Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.

Dived here today? How were conditions vs. what we showed?

About this site

Portland Harbour lies on the Dorset coast of southern England, sheltered by breakwaters near Weymouth on the English Channel. It has long served as a training and easy-access diving area thanks to its protected waters. The site reaches a maximum depth of around 8 metres and is considered a beginner dive.

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