Valletta enjoys a Mediterranean climate with hot, dry summers and mild, wet winters, though genuinely cold weather is essentially unknown.

Rain falls primarily between October and March, with December and January being the wettest months, making a compact umbrella or water-resistant jacket essential during this period.

Summer temperatures regularly exceed 30°C, while winter rarely drops below 10°C at night, creating a relatively narrow annual temperature band that simplifies packing year-round.

The persistent Gregale wind from the northeast can make winter feel considerably cooler than the thermometer suggests, while summer breezes from the sea provide modest relief during peak heat.

The city's honey-coloured limestone reflects sunlight with unusual intensity, meaning sunglasses and sun protection are necessary even during short winter walks.