The best time to visit Relva, Azores, Portugal, is typically from late spring to early autumn, specifically May through October, for the most pleasant weather and a full range of activities.During these months, the temperatures are mild and agreeable, usually ranging from 18°C to 25°C, with less rainfall compared to the winter months. This period is ideal for exploring the island's natural beauty, including hiking trails, volcanic landscapes, and coastal areas. You'll find that most outdoor excursions and boat trips are fully operational.For those keen on whale and dolphin watching, the peak season runs from April to October, offering the best chances to spot various marine species. The warmer waters during these months also make swimming and other water activities more enjoyable.If you prefer to avoid the busiest tourist period in July and August, May, June, September, and October offer a good balance of excellent weather and fewer crowds.