The best time to visit Gamleby, Kalmar County, Sweden, is during the summer months, from June to August, when the weather is at its most pleasant.
During this period, you can expect long daylight hours, often stretching late into the evening, and milder temperatures, typically ranging from 18°C to 22°C. This weather is ideal for exploring the natural beauty of the region, including the archipelago and the surrounding countryside. It's also when most local attractions and outdoor activities are fully operational.
For those who enjoy outdoor pursuits, July and August are particularly good for activities like sailing, kayaking, and hiking in the nearby nature reserves. The water temperatures are also at their warmest, making swimming in the Baltic Sea or the freshwater lakes more inviting.
If you prefer a quieter experience with fewer crowds and are interested in observing the changing colours of the landscape, late May or early September can also be good options.