Sea breezes can drop afternoon temperatures along coasts even when inland cities stay warm. Meridian shows the lat/lon forecast OpenWeather returns — it will not invent a beach microclimate beyond that point.
Haar and low cloud along eastern and northern coasts can wipe sunshine without a dramatic rain spike. When the condition text says mist or fog, trust the sky icon over a mild temperature alone.
Gusts on promenades and bridges feel stronger than the same number in a sheltered street. If wind is your constraint, check gusts on the hourly strip before ferry decks or cliff walks.
Our hot UK place blurbs call out coastal quirks where they matter; the live numbers below them remain the decision tool.