Neum, Bosnia and Herzegovina High/Low, Precipitation Chances, Sunrise/Sunset, and today's Temperature History. Annual Weather Averages in Sarajevo / Butmir. Home; Europe; Bosnia and Herzegovina; Neum; July; Neum average July sea temperature. Low Temp: 25 … The cold season lasts for 3.6 months, from November 20 to March 9, with an average daily high temperature below 54°F. The warmest time of year is generally mid July where highs are regularly around 87°F (30.6°C) with temperatures rarely dropping below 62°F (16.7°C) at night. Bosnia And Herzegovina in october The hottest day of the year is August 4, with an average high of 89°F and low of 64°F. This result is below the regional level, but still above the global average, making Bosnia and Herzegovina a "moderately free" country. High Temperature 21 °C 70 °F. Based on weather reports collected during 1985–2015. A moderate climatic zone determines the weather in Bosnia and Herzegovina. Sarajevo weather averages (imperial / metric) Daytime temperature: 20.1 °C 68.1 °F: Nightly temperature: 8.2 °C 46.7 °F: Average temperature: 14.1 °C 57.4 °F: Daily sunshine: 6.8 hrs: Avg rainfall: 77 mm 3 ins: Rainy days: 10 days: Sea temperature: 23.1 °C 73.6 °F: Humidity: 69%: Windspeed: 9 kph 6 mph Bosnia & Herzegovina - average age of the population 1950-2050 Bosnia and Herzegovina