Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone.
The ideal beach air temperature sits between 26 and 31 degrees Celsius for most people, and the reason the range is not higher is that above roughly 33 degrees the shade-seeking, water-retreating pattern starts and the day stops being relaxing. Below 22 degrees a beach day becomes a coastal walk, which is fine but is a different plan. Water temperature runs on its own scale: above 26 degrees is effortless swimming, 22 to 26 is comfortable for extended time in the water, 18 to 22 is bracing and suits shorter swims or a springsuit, 15 to 18 calls for a 3/2 millimetre wetsuit, and below 15 degrees is wetsuit-mandatory territory where cold-shock response becomes a genuine safety consideration rather than a comfort note. Wind is the most underrated beach variable: sustained wind above 25 kilometres per hour turns dry sand into an abrasive and makes parasols dangerous, and an onshore wind of the same speed feels far colder than an offshore one at identical temperature. UV drives the timing rather than the go/no-go — an index above 8 makes the eleven-to-three window one for shade, not for sunbathing. This page combines those thresholds with monthly beach rankings across the Mediterranean, Caribbean, Southeast Asia, Australia and the American coasts so you can pick both the right destination and the right month.
Scores are capped by dealbreakers — heavy rain, dangerous wind, thick fog or hazardous UV pull a day down no matter how pleasant the rest of the numbers look. Forecast data is Open-Meteo; solar and lunar values are computed for this location's own coordinates and time zone. Full details on the methodology page.