Perfect Time to Visit San Juan, La UnionIf you are going to San Juan for a surf, it is best to know first the perfect time to visit in order to maximize your stay. There are two surfing seasons in San Juan, the North Swell, which lasts between November to March, and the South Swell, which lasts from July to October.Both seasons are considered great for surfing. However, if you prefer a calmer and sunnier season, go for the North Swell. The South Swell also offers great waves, however, it can be accompanied by rain and bad weather, due to the typhoons that are also common between those months.