Dusk around 9:30 p.m. in June, 10 p.m. in July, 9 p.m. in August
Summer weather can typically be experienced in the period from June through mid-September. Czech summers are usually mild (20-27°C/70-80°F) and somewhat humid, with the highest temperatures climbing to 30-35°C/85-95°F or higher for short periods. Such heat waves can be expected in July and August. Sudden showers and thunderstorms are common, so bring an umbrella or a light rain coat – or be prepared to dash for cover.