Mostar — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Mostar, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Mostar today is 18.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 7 | 18.4°C | 18.0°C | |
| JUN 8 | 18.1°C | 18.0°C | |
| JUN 10 | 19.0°C | 18.0°C | |
| JUN 11 | 18.8°C | 18.0°C | |
| JUN 12 | 18.8°C | 18.0°C | |
| JUN 13 | 18.7°C | 18.0°C | |
| JUN 14 | 18.5°C | 18.0°C | |
| JUN 15 | 18.0°C | 18.5°C | |
| JUN 16 | 18.0°C | 18.5°C | |
| JUN 17 | 18.0°C | 18.4°C | |
| JUN 18 | 18.0°C | 18.4°C | |
| JUN 19 | 18.0°C | 18.4°C | |
| JUN 20 | 18.0°C | 18.4°C | |
| JUN 21 | 18.0°C | 18.3°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 4°C | 8°C | 10°C |
| February | 4°C | 8°C | 10°C |
| March | 7°C | 10°C | 13°C |
| April | 8°C | 12°C | 16°C |
| May | 9°C | 14°C | 19°C |
| June | 13°C | 18°C | 22°C |
| July | 14°C | 18°C | 23°C |
| August | 15°C | 19°C | 24°C |
| September | 13°C | 18°C | 22°C |
| October | 10°C | 14°C | 17°C |
| November | 6°C | 9°C | 12°C |
| December | 4°C | 8°C | 10°C |
Mostar: Weather Forecast
June 15
June 16
June 17
Location & Local Information
Mostar, located in southern Bosnia and Herzegovina, lies on the banks of the Neretva River, one of the country’s most striking and coldest rivers. Originating in the Dinaric Alps, the Neretva carries fresh, turquoise water that remains cool even during the hottest months. In winter, the river’s temperature averages 4–7°C, rising in spring to around 10–13°C. During summer, particularly in July and August, it reaches 18–21°C near Mostar, while deeper currents remain colder. In autumn, the water gradually cools again to about 10–15°C.
Swimming in the Neretva River is possible but demanding because of its low temperature and strong currents. Locals and visitors often swim in designated areas near the Old Bridge and along calmer banks downstream. The water is exceptionally clean and refreshing, offering a unique experience for strong swimmers accustomed to cold mountain water. Many also enjoy jumping from the Old Bridge, a tradition linked to courage and local culture. However, due to the coldness of the river and uneven currents, swimming is safest during warm summer days and in monitored areas.