Two low-tide windows today — the small hours and mid-afternoon — both good for foraging. Sea's an unusually warm 20.0°C, some of the best swimming conditions the UK sea gets.
Wind direction is what matters most here. Boscombe faces roughly south. Wind from the north or north-east is offshore — it flattens the sea out (your “like a lake” evenings) and the beach feels sheltered. Wind from the south-east round to the south-west is onshore — it pushes waves and chop straight at the beach. Onshore at 12 mph or more = take the windbreaks. The arrow shows which way the wind is blowing towards.
Waves: under 0.3m isn’t worth carrying the bodyboard down; 0.3–0.8m is fun size; 0.8–1.2m is punchy but doable if confident; above that, Boscombe gets messy and it’s a watching day. The period (seconds between waves) tells you the quality: 8s+ means clean, well-spaced sets; under 5s is short, scrappy wind-chop. One honest caveat: the wave figure comes from a model point out in Poole Bay, and the bay is sheltered — short-period chop especially loses most of its size by the time it reaches the sand, so the scores discount for that. The beach cams below are the ground truth: model says maybe, cam decides.
Moon & tides: full and new moons bring spring tides — bigger tidal range, so noticeably stronger currents (stay between the groynes) but also the biggest low tides, exposing shoreline that’s normally underwater — prime sea glass territory. Quarter moons bring neaps: gentler currents, smaller range, easier swimming. Springs actually peak a day or two after the full/new moon.
UV: 0–2 low; 3–5 moderate (cream up between 11am–3pm); 6–7 high (hat, cream, shade at midday); 8+ very high — rare in the UK but this summer’s been trying.
Water quality: the Environment Agency’s rating for Boscombe Pier, plus its daily pollution-risk forecast in season. After heavy rain, storm overflows can briefly tip bacteria levels up — if it shows a warning, give it a day before swimming.