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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.

Siret River, Romania
Siret River, Romania © By Cezar Suceveanu, CC BY 3.0

Current Water Temperature

20.7°C
Today
20.1°C
Yesterday
19.3°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in the Siret River today is 20.7°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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

From May 10 to June 10

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 319.1°C18.0°C
JUN 419.1°C18.0°C
JUN 519.1°C18.0°C
JUN 619.6°C18.0°C
JUN 720.0°C18.0°C
JUN 820.1°C18.0°C
JUN 1020.7°C18.0°C
JUN 1118.0°C20.6°C
JUN 1218.0°C20.4°C
JUN 1318.0°C20.3°C
JUN 1418.0°C20.2°C
JUN 1518.0°C20.0°C
JUN 1618.0°C19.9°C
JUN 1718.0°C19.8°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
January1°C7°C11°C
February1°C6°C10°C
March3°C8°C13°C
April8°C12°C15°C
May9°C14°C18°C
June13°C18°C22°C
July15°C19°C24°C
August15°C19°C24°C
September12°C17°C21°C
October10°C14°C17°C
November7°C10°C13°C
December2°C7°C11°C

Siret River: Water Temperature by Location

Siret River: Weather Forecast

June 9

° / °
slight thunderstorm
rain: 56% | wind:

June 10

° / °
fog
rain: 16% | wind:

June 11

° / °
slight thunderstorm
rain: 42% | wind:

June 12

° / °
overcast
rain: 20% | wind:

June 13

° / °
slight rain showers
rain: 39% | wind:

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.

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Frequently Asked Questions

What is the current water temperature in the Siret River?
Water Temperature in the Siret River today is 20.7°C.
What is the water temperature in the Siret River during the summer months?
The water temperature in the Siret River in summer fluctuates in the range of 13°C - 24°C.
Is it possible to swim in Siret (Romania) and what are the possibilities for this?
Swimming is possible in the Siret area, but wild swimming in the river is only advisable in calm, clean stretches and when locals confirm quality and safe conditions due to currents and seasonal changes, while safer and more reliable options include municipal swimming pools, nearby lakes or reservoirs and organized bathing spots.