The best time to go to Mataró is during the late spring (May-June) or early autumn (September-October) when the weather is pleasant for exploring and the crowds are smaller.During these months, the temperatures are comfortably warm, typically ranging from 20-25°C, making it ideal for enjoying the beaches, walking along the promenade, and dining outdoors. You'll find the town's attractions, like the Plaça de Santa Anna and the Basílica de Santa Maria, are less busy, allowing for a more relaxed visit.For those who enjoy swimming and sunbathing, July and August offer the warmest sea temperatures, often above 25°C. However, this is also peak tourist season, so expect larger crowds, especially on the beaches and in popular restaurants. While lively, it can be a bit more expensive and busier, which might not suit those looking for a quieter experience.