Spring (March to June) and early autumn (September to October) bring warm, sunny weather ideal for the city and the beach without the peak-summer crowds. July and August are hot and humid, and winter is mild. Note the famous Fallas festival fills the city in mid-March with crowds, fireworks and daily firecracker displays.
Valencia is fairly safe, but petty theft happens in crowds at the Central Market, the old town and on the metro. Keep valuables secured and out of back pockets, and stay especially alert during festivals like Fallas when the streets are packed.
Thefts of bags and phones on Malvarrosa and the other city beaches are common while people swim or nap. Never leave belongings unattended on the sand, take turns watching them, and bring only what you need.
During the Fallas festival in mid-March the city is extremely crowded and full of firecrackers and pyrotechnics, including the loud daily mascleta. Keep children close, protect your ears, follow crowd directions, and keep valuables secure in the crush.