Sisak — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Sisak, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Sisak today is 24.3°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 23 | 22.2°C | 18.6°C | |
| JUN 24 | 22.6°C | 18.6°C | |
| JUN 25 | 22.7°C | 18.6°C | |
| JUN 26 | 22.7°C | 18.6°C | |
| JUN 27 | 22.9°C | 18.6°C | |
| JUN 28 | 22.9°C | 18.6°C | |
| JUN 29 | 23.0°C | 18.6°C | |
| JUN 30 | 24.1°C | 18.6°C | |
| JUL 1 | 19.0°C | 24.0°C | |
| JUL 2 | 19.0°C | 23.8°C | |
| JUL 3 | 19.0°C | 23.5°C | |
| JUL 4 | 19.0°C | 23.2°C | |
| JUL 5 | 19.0°C | 23.0°C | |
| JUL 6 | 19.0°C | 22.7°C | |
| JUL 7 | 19.0°C | 22.4°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 | 3°C | 8°C | 11°C |
| February | 4°C | 8°C | 10°C |
| March | 7°C | 10°C | 13°C |
| April | 8°C | 12°C | 15°C |
| May | 9°C | 14°C | 20°C |
| June | 13°C | 19°C | 25°C |
| July | 15°C | 19°C | 24°C |
| August | 15°C | 19°C | 24°C |
| September | 12°C | 17°C | 21°C |
| October | 10°C | 14°C | 17°C |
| November | 6°C | 10°C | 13°C |
| December | 4°C | 8°C | 11°C |
Sisak: Weather Forecast
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Location & Local Information
In the city of Sisak, the Sava River is wide and steady, carrying waters from the mountains toward the lowlands. During the summer months, water temperatures usually reach between 21–25°C, depending on the flow and recent weather. Since the river here is influenced by tributaries like the Kupa, its temperature can vary slightly, but in general it becomes warm enough for swimming in July and August.
Swimming in the Sava at Sisak is possible, especially in calmer stretches near accessible riverbanks. Locals sometimes use these areas to cool down during hot days, though the river’s current should always be respected. The experience of swimming here is more natural and authentic compared to tourist lakes, with greenery along the banks creating a peaceful backdrop for relaxation by the water.