The best time to visit Callander is during the late spring and summer months, from May to September, when the weather is generally mildest and the days are long.May and June offer pleasant temperatures and fewer crowds, making it ideal for exploring the Trossachs National Park and enjoying outdoor activities like hiking and cycling around Loch Venachar or Ben A'an. The surrounding landscape is lush and green, and the daylight hours are extended, allowing for more time to sightsee.July and August are the warmest months, superb for those who want to fully experience the lochs and glens. This is peak season, so while the weather is at its best for boat trips on Loch Katrine or walking along the River Teith, you'll find more visitors. It's a great time for families to enjoy the various outdoor centres and local attractions, as school holidays mean there's often more organised activities available.September presents a lovely balance, with cooler temperatures, fewer people, and the start of autumn colours transforming the landscape around Bracklinn Falls.