Trebinje — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Trebinje, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Trebinje today is 20.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 |
|---|---|---|---|
| SEP 12 | 22.5°C | 17.9°C | |
| SEP 13 | 22.6°C | 17.9°C | |
| SEP 14 | 22.1°C | 17.9°C | |
| SEP 15 | 21.6°C | 17.9°C | |
| SEP 16 | 20.9°C | 17.9°C | |
| SEP 17 | 21.0°C | 17.9°C | |
| SEP 18 | 20.7°C | 17.9°C | |
| SEP 19 | 20.5°C | 17.9°C | |
| SEP 20 | 17.9°C | 20.4°C | |
| SEP 21 | 17.9°C | 20.2°C | |
| SEP 22 | 17.9°C | 20.1°C | |
| SEP 23 | 17.9°C | 20.0°C | |
| SEP 24 | 17.9°C | 19.9°C | |
| SEP 25 | 17.9°C | 19.7°C | |
| SEP 26 | 17.9°C | 19.6°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 | 5°C | 9°C | 11°C |
| February | 5°C | 9°C | 11°C |
| March | 7°C | 10°C | 13°C |
| April | 8°C | 12°C | 15°C |
| May | 10°C | 15°C | 19°C |
| June | 13°C | 18°C | 22°C |
| July | 16°C | 20°C | 25°C |
| August | 16°C | 21°C | 27°C |
| September | 13°C | 18°C | 23°C |
| October | 11°C | 15°C | 18°C |
| November | 8°C | 11°C | 14°C |
| December | 5°C | 9°C | 11°C |
Trebinje: Weather Forecast
September 20
September 21
September 22
September 23
September 24
Location & Local Information
Trebinje, the southernmost city in Bosnia and Herzegovina, is closely linked to the Trebišnjica River, one of the longest sinking rivers globally. The river's flow is heavily regulated by hydroelectric power systems, but in the urban area, its wide, calm course provides a refreshing focal point for the Mediterranean climate city. In winter, the river maintains a cool temperature range, generally between 12∘C and 14∘C. However, the summer heat significantly warms the slower-moving surface water, resulting in comfortable swimming temperatures that often peak between 22∘C and 26∘C in July and August.
Swimming in the Trebišnjica River is a highly popular and encouraged activity within Trebinje, serving as the city's main summer cooling spot. Designated bathing areas, like those near the historic center, are well-established and monitored for water quality, which is generally rated as excellent. The calm flow and pleasant summer warmth, coupled with the clean, mountain-karst water source, make the Trebišnjica a safe and attractive natural destination for locals and tourists seeking aquatic recreation.