Bosnia and Herzegovina — Water Temperature in Seas, Lakes and Rivers
Check today’s water temperatures across Bosnia and Herzegovina, including seas, lakes, and rivers. View real-time updates and seasonal ranges for both coastal and inland waters. We find every place where you can swim and show you the water temperature there today and throughout the year.
Sea Water Temperature Along the Coast
Chart of Average Temperature Changes Over the Last 60 Days
Places with the Warmest Sea Water Today
The Most Popular Seaside Places
Coastal Seas and Oceans
Water Temperature in Lakes and Rivers
Popular Lakes
Popular Rivers
Popular Places
Water Temperature and Swimming Overview
Regions and Map
Water Temperature Trends
Bosnia and Herzegovina has a short stretch of Adriatic coast around Neum where sea temperatures follow typical northern Adriatic patterns: winter values usually hover around 12–15 °C (54–59 °F), spring rises through 15–20 °C (59–68 °F), and the warmest months of July and August commonly reach 23–27 °C (73–81 °F). September often still feels pleasant with water in the low to mid‑20s °C (68–75 °F). Inland, conditions vary with altitude and river type. Lowland rivers and reservoirs can warm to the high teens or low 20s °C (about 65–72 °F) in summer, while karst and mountain lakes typically remain cooler—often 10–18 °C (50–64 °F) even in July and August. Spring snowmelt and late‑season rains can keep rivers brisk and colder through late spring.
Swimming Conditions
Swimming is a common summer activity along the coast, at designated beaches near Neum and in many reservoirs and lower rivers during warm months, when temperatures are comfortable and monitoring is in place. Mountain lakes and swift rivers attract swimmers and adventure sports enthusiasts, but cooler temperatures and strong currents make them less suited for casual bathing and more appropriate for experienced or cautious swimmers. Water quality varies by location; official bathing areas are monitored and generally safe, while some urban or agricultural stretches may be unsuitable during certain periods. Seasonal access is therefore governed by temperature, safety considerations such as currents and weather, and local water‑quality advisories, with most recreational swimming concentrated between late spring and early autumn.