The best time to visit  Spain depends on your type of  travel and interests, but generally, the following are the best times:

Spring (March to May)

• Advantages: The weather is very pleasant during this season. The temperature is neither too hot nor too cold, making it ideal for sightseeing and exploring cities and nature.
• Best for: Visiting cities and beaches, festivals, and cultural events.

Summer (June to August)

• Advantages: Summer is the peak tourist season. If you enjoy beaches and water activities, this is the best time. However, the temperature can rise significantly (over 35°C) in the inland and southern parts of Spain .
• Best for: Beach vacations, major festivals like San Fermín, and other celebrations.

Autumn (September to November)

• Advantages: The weather is also mild during this season, and prices are generally lower than in summer. Nature is especially beautiful, making it a great time for nature lovers and hikers.
• Best for: Exploring cities, visiting cultural and historical sites, rural travel .

Winter (December to February)

• Advantages: Winter is the off-peak season with lower prices. If you're into winter sports, Spain ’s mountainous regions like the Pyrenees and Sierra Nevada are perfect for skiing.
• Best for: Skiing, visiting major cities without crowds, enjoying Christmas and New Year celebrations.

If you’re looking for mild weather and fewer crowds, spring and autumn are the best times to visit Spain . If you're after beach activities and large festivals, summer is the best season.