Olt River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Olt River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Olt River today is 19.6°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 3 | 18.1°C | 17.0°C | |
| JUN 4 | 18.0°C | 17.0°C | |
| JUN 5 | 18.1°C | 17.0°C | |
| JUN 6 | 18.7°C | 17.0°C | |
| JUN 7 | 18.8°C | 17.0°C | |
| JUN 8 | 18.8°C | 17.0°C | |
| JUN 10 | 19.6°C | 17.0°C | |
| JUN 11 | 17.0°C | 19.5°C | |
| JUN 12 | 17.0°C | 19.3°C | |
| JUN 13 | 17.0°C | 19.2°C | |
| JUN 14 | 17.0°C | 19.1°C | |
| JUN 15 | 17.0°C | 19.0°C | |
| JUN 16 | 17.0°C | 18.8°C | |
| JUN 17 | 17.0°C | 18.7°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 | 2°C | 6°C | 10°C |
| February | 2°C | 6°C | 9°C |
| March | 3°C | 8°C | 12°C |
| April | 7°C | 11°C | 14°C |
| May | 9°C | 13°C | 18°C |
| June | 12°C | 17°C | 21°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 18°C | 23°C |
| September | 11°C | 16°C | 20°C |
| October | 9°C | 13°C | 16°C |
| November | 6°C | 9°C | 12°C |
| December | 2°C | 6°C | 10°C |
Olt River: Water Temperature by Location
Olt River: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
The Olt River running through South-West Oltenia exhibits noticeable seasonal variation in water temperature. In winter the surface typically lies around 0–4 °C (32–39 °F), often close to freezing in shallow or slow stretches. In spring temperatures rise but remain cool, roughly 5–15 °C (41–59 °F) depending on runoff and recent weather. Summer brings the warmest conditions, with many calm stretches reaching 18–26 °C (64–79 °F) on hot days, though faster, deeper channels stay cooler. In autumn the river cools again to roughly 8–16 °C (46–61 °F). Local factors such as depth, flow speed, shade from vegetation, and impoundments or reservoirs produce microclimates, so measurements can differ between reaches and between surface and deeper water.
Swimming in the Olt is possible in many accessible, calm areas and is a common recreational activity in summer where water quality and local rules allow it. However, it is not uniformly sanctioned everywhere: currents, submerged hazards, boat traffic, nearby dams or weirs, and variable pollution mean some stretches are unsafe or prohibited. Cold spring and autumn temperatures can increase risk of cold shock or hypothermia, and winter swimming is generally inadvisable except for experienced, prepared individuals. Observing local signage, checking recent water-quality information, and choosing supervised or well-known bathing spots reduces risks.