Siret River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Siret River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Siret River today is 18.3°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 |
|---|---|---|---|
| SEP 14 | 20.3°C | 17.1°C | |
| SEP 15 | 19.5°C | 17.1°C | |
| SEP 16 | 18.9°C | 17.1°C | |
| SEP 17 | 18.6°C | 17.1°C | |
| SEP 18 | 18.5°C | 17.1°C | |
| SEP 19 | 18.3°C | 17.1°C | |
| SEP 20 | 18.4°C | 17.1°C | |
| SEP 21 | 17.7°C | 17.1°C | |
| SEP 22 | 17.1°C | 18.2°C | |
| SEP 23 | 17.1°C | 18.2°C | |
| SEP 24 | 17.1°C | 18.1°C | |
| SEP 25 | 17.1°C | 18.1°C | |
| SEP 26 | 17.1°C | 18.0°C | |
| SEP 27 | 17.1°C | 17.9°C | |
| SEP 28 | 17.1°C | 17.9°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 | 1°C | 7°C | 11°C |
| February | 1°C | 6°C | 10°C |
| March | 3°C | 8°C | 13°C |
| April | 8°C | 12°C | 15°C |
| May | 9°C | 14°C | 18°C |
| June | 13°C | 19°C | 25°C |
| July | 15°C | 21°C | 27°C |
| August | 15°C | 21°C | 27°C |
| September | 12°C | 17°C | 23°C |
| October | 10°C | 14°C | 17°C |
| November | 7°C | 10°C | 13°C |
| December | 2°C | 7°C | 11°C |
Siret River: Water Temperature by Location
Siret River: Weather Forecast
September 22
September 23
September 24
September 25
September 26
September 27
Location & Local Information
Râul Siret, a major river in south‑east Romania, shows clear seasonal variation in surface water temperature. In winter the river typically cools to around 0–4 °C (32–39 °F), often near freezing in cold spells. Spring brings a gradual rise to roughly 5–14 °C (41–57 °F) as snowmelt and rainfall increase flow. Summer is when the Siret is warmest, with surface temperatures commonly between 18–26 °C (64–79 °F) in calmer sections, though shaded or faster stretches stay cooler. In autumn the water drops again, usually sitting in the 8–15 °C (46–59 °F) range as air temperatures fall and discharge patterns change.
Swimming in the Siret is not universally prohibited, but it is conditional and requires caution. Many stretches are used for recreation in summer where currents are moderate and access is safe, yet there are no widespread lifeguarded beaches and water quality can vary with agricultural runoff, urban discharge and episodic pollution. Fast flows after heavy rain or during spring thaw make swimming dangerous due to strong currents and colder temperatures. Local authorities or signage may restrict access in specific places, so swimmers should choose known safe spots, check recent water quality and flow conditions, and avoid swimming alone or where hazards are present.