Start at Miyazaki Prefectural Art Museum, in Shimokitajima, for an easy indoor introduction to the region’s creative heritage. Allow around 1½ hours; the museum is typically open from 10:00 to 18:00 and admission to the permanent collection is generally free, although special exhibitions may charge separately. It is a comfortable choice in August, when the heat and humidity build quickly. From central Miyazaki, take a local bus or taxi—roughly 10–15 minutes—or drive and use the museum-area parking.
Continue north toward Miyazaki Shrine in Jingū, one of the city’s most atmospheric stops. Walk slowly beneath the tall, shaded trees along the approach before visiting the shrine precinct; the visit itself takes about an hour and is free. The shrine is usually accessible from early morning until around sunset, with no need to rush. A taxi from the museum is simplest, taking about 10 minutes; by bus, allow a little longer and expect some walking.
After lunch, head up to Heiwadai Tower in Shimowadagō, a short taxi ride from Miyazaki Shrine or around 15 minutes by car. The hilltop monument’s observation area gives you wide views across the city and countryside, and the surrounding park is pleasant for a brief walk. Admission is modest—usually around ¥200–¥300—and an hour is enough. Then make your way south to Aoshima Shrine, allowing roughly 35–45 minutes by car or taxi, or about an hour by train and foot from Miyazaki Station. Cross the distinctive Devil’s Washboard rock formations to reach the colorful shrine on the island; give yourself two hours, especially if you want photographs and time to watch the tide. Check the forecast and wear sandals with good grip, as the rocks can be slippery.
Return to downtown Miyazaki for dinner at an Obi-style chicken nanban restaurant near central Miyazaki. This local version of fried chicken is served with sweet-and-sour sauce and generous tartar, and a typical meal costs about ¥1,000–2,500 per person. Look around the Nishitachi entertainment district, where many small restaurants sit within a few blocks of Nishitachi-dōri and Tachibana-dōri. Reservations are useful on Saturday evening, but arriving around 17:30–18:00 usually gives you the best chance of a table; most places open for dinner from around 17:00 and stay open late.