Pärnu River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Pärnu River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Pärnu River today is 18.6°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 23 | 16.2°C | 16.0°C | |
| JUN 24 | 17.0°C | 16.0°C | |
| JUN 25 | 17.3°C | 16.0°C | |
| JUN 26 | 17.0°C | 16.0°C | |
| JUN 27 | 16.6°C | 16.0°C | |
| JUN 28 | 16.2°C | 16.0°C | |
| JUN 29 | 17.8°C | 16.0°C | |
| JUN 30 | 18.2°C | 16.0°C | |
| JUL 1 | 18.0°C | 18.6°C | |
| JUL 2 | 18.0°C | 18.5°C | |
| JUL 3 | 18.0°C | 18.5°C | |
| JUL 4 | 18.0°C | 18.5°C | |
| JUL 5 | 18.0°C | 18.5°C | |
| JUL 6 | 18.0°C | 18.4°C | |
| JUL 7 | 18.0°C | 18.4°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 | 0°C | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 3°C | 6°C |
| April | 3°C | 7°C | 9°C |
| May | 6°C | 11°C | 16°C |
| June | 11°C | 16°C | 20°C |
| July | 13°C | 18°C | 22°C |
| August | 12°C | 17°C | 21°C |
| September | 9°C | 14°C | 18°C |
| October | 5°C | 9°C | 11°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 3°C | 6°C |
Pärnu River: Water Temperature by Location
Pärnu River: Weather Forecast
July 1
July 2
July 3
July 4
July 5
Location & Local Information
Source:
• location Central Estonian Plain
• elevation 76.2 m (250 ft)
Mouth:
• location Gulf of Riga
• coordinates 58°22′38″N 24°28′34″E
Length 144 km (89 mi)
Pärnu River (Estonian: Pärnu jõgi) shows clear seasonal variation in water temperature. In summer months, July and August, surface temperatures typically range from about 18–24 °C (64–75 °F) on warm days, making parts of the river pleasant for casual swimming. Late spring, as snowmelt subsides, brings cooler conditions around 6–12 °C (43–54 °F), while early autumn commonly records 8–14 °C (46–57 °F) as the water gradually cools. Winter temperatures fall close to freezing; the river often sits between 0–4 °C (32–39 °F) where ice does not form, and sections can be ice-covered for prolonged periods.
Swimming in the Pärnu River is generally permitted in many places, but it is subject to practical and safety considerations. Municipal authorities monitor bathing water quality at popular spots and advise against swimming during high-flow spring floods, after heavy rains, or where currents are strong. In winter, open-water swimming is unsafe except for organized ice-swimming events that use prepared holes and safety measures. Bathers should choose established bathing areas, heed local warnings, and be cautious of depth, currents and occasional water-quality advisories; when these conditions are met, summer swimming in the river is regularly enjoyed by locals and visitors.