The best time to go to Horn Island is during the dry season, which runs from May to October.
During these months, you'll experience clear skies, lower humidity, and comfortable temperatures, making it ideal for exploring the island's natural beauty and historical sites. The average daytime temperature during this period is around 25-30°C, superb for outdoor activities.
This period is particularly good for travellers interested in marine activities like snorkelling or fishing, as the waters are generally calmer and clearer. It's also the best time for birdwatching, as many migratory species are present.