The best time to visit Ondarroa is during the summer months, from June to September, when the weather is warm and sunny, superb for enjoying the coast.During these months, you'll find the town at its most active. The temperatures are generally pleasant, averaging around 20-25°C, making it ideal for spending time outdoors, exploring the fishing port, and relaxing on the beaches. This period also sees the most local festivals and events, adding to the experience.For those who enjoy swimming and water sports, the sea temperature is also at its warmest during the summer, making the beaches like Saturraran and Arrigorri particularly inviting. Families will find this time especially good, as the longer days and good weather allow for plenty of activities, from building sandcastles to exploring the coastal paths.If you prefer a quieter trip with mild weather, the shoulder months of May and October can also be appealing. The crowds are thinner, but you can still expect comfortable temperatures and enjoy the natural beauty of the area without the peak season bustle.