Lonja River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Lonja River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Lonja River today is 19.7°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 3 | 20.2°C | 18.0°C | |
| JUN 4 | 20.2°C | 18.0°C | |
| JUN 5 | 20.2°C | 18.0°C | |
| JUN 6 | 20.1°C | 18.0°C | |
| JUN 7 | 20.0°C | 18.0°C | |
| JUN 8 | 19.3°C | 18.0°C | |
| JUN 10 | 19.7°C | 18.0°C | |
| JUN 11 | 18.0°C | 19.6°C | |
| JUN 12 | 18.0°C | 19.5°C | |
| JUN 13 | 18.0°C | 19.4°C | |
| JUN 14 | 18.0°C | 19.4°C | |
| JUN 15 | 18.0°C | 19.3°C | |
| JUN 16 | 18.0°C | 19.2°C | |
| JUN 17 | 18.0°C | 19.1°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 | 18°C | 22°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 |
Lonja River: Water Temperature by Location
Lonja River: Weather Forecast
June 9
June 10
June 11
June 12
June 13
June 14
Location & Local Information
Mouth:
• location Sava
• coordinates 45.3638°N 16.7537°E
Length 49.1 km (30.5 mi)
The Lonja River in Croatia flows through the wide lowlands of the Sava basin and is known for its slow current and meandering course. Because of its relatively shallow depth in many places, the water warms up well during the summer, often reaching 22–25°C in July and August. Still, the temperature can vary depending on rainfall and water levels, since parts of the river are closely connected to wetlands and floodplains.
Swimming in the Lonja River is possible, but it is not as common as in larger rivers or lakes. In calmer stretches, especially where the banks are accessible and the current is mild, locals sometimes cool off during hot days. The atmosphere is very natural and quiet, surrounded by fields and forests, which makes it a refreshing experience away from crowded tourist spots.