San Marino experiences a Mediterranean climate with continental influences due to its mountainous position on Monte Titano, resulting in distinct seasons and cooler temperatures than the surrounding Italian coast.

Rainfall is most abundant in autumn and spring, with occasional summer thunderstorms that can appear suddenly over the hills, making a light waterproof layer a recurring necessity.

Temperatures range from around 0°C in winter to 30°C in summer, though the elevation keeps things pleasantly cooler than the Adriatic lowlands just kilometers away.

The exposed hilltop location means wind is a persistent factor year-round, particularly the cold bora in winter and warm scirocco in spring and autumn.

The steep cobbled streets and medieval staircases demand proper footwear with grip in all seasons, particularly when rain makes the stone surfaces treacherous.