The best time to visit Sibolga is during the dry season, which runs from May to September.
During these months, you'll experience consistently sunny weather and calmer seas. This is ideal for enjoying the beaches, island hopping, and exploring the natural beauty around Sibolga without the interruption of heavy rainfall. It's also the best time for activities like snorkelling, diving, and boat trips to nearby islands such as Poncan Ketek or Mursala Island.
While the dry season is generally preferred, the shoulder months of April and October can also be good options. The weather is usually still pleasant, and there are typically fewer visitors, which can make for a more tranquil experience. You might encounter an occasional shower, but these are usually brief.
Conversely, the rainy season, from October to April, brings more frequent and heavier rainfall, which can sometimes disrupt outdoor activities and make sea travel less comfortable.