When is the sea warm enough to swim?
Based on the average sea temperature below, the sea reaches about 22 °C or more from June to October. In 2026 the regional ordinance set the bathing season in Puglia from 23 May to 13 September.

When should you visit Marina di Lesina? This guide goes month by month: average weather and sea temperature, things to do, local events and seasonal food. It is especially useful outside July and August, when the coast is calm, the light is soft and the lagoon is at its best.
Based on the average sea temperature below, the sea reaches about 22 °C or more from June to October. In 2026 the regional ordinance set the bathing season in Puglia from 23 May to 13 September.
Outside the summer, Marina di Lesina is a quiet destination for walks on empty beaches, birdwatching on the lagoon, cycling, local food and day trips into the Gargano National Park. Many seasonal venues close in winter, so check opening times before you go.
The quietest month on the coast: empty beaches, mild winter light and the lagoon at its most atmospheric. A good time for walks and birdwatching, not for swimming.
Still winter, with the first longer, brighter days. Quiet roads make it a calm month for slow travel.
Spring starts to show: longer days, green banks around the lagoon and the first mild afternoons. Weather is changeable, with frequent showers.
Pleasant days around 18 °C, blossoming scrub and still-empty beaches.
One of the best months for a calm visit: warm afternoons, long light and a sea that is slowly warming up. The patronal feast of San Primiano falls in mid-May.
The summer season begins: hot sunny days, long evenings and a sea that is warm enough for most swimmers by the end of the month.
Peak summer: the hottest and sunniest month, with the warmest sea and the liveliest beaches.
High season: hot weather, warm sea and the busiest beaches and roads of the year. Evenings are lively.
Often the best month for swimming without the crowds: the sea is still warm, the air less hot and the beaches calmer. Showers become more likely toward the end.
Mild, golden days and an autumn atmosphere, with the sea still comfortable for the first part of the month. Quiet, atmospheric and good for food.
Autumn at its quietest: the rainiest month of the year, with moody light and nearly empty beaches. A season for food and slow walks.
A quiet winter month with festive touches. Cool days, a calm lagoon and traditional eel dishes.
We only list events with an explicit date from an official or recent source. For months without a listed event, none is confirmed yet: see the Events page for updates.
Averages from Open-Meteo historical model data for the Acquarotta area (air 2015–2025, sea 2022–2025). They are model values, not on-site measurements; see the live weather on the home page.