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Lake Siutghiol — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Lake Siutghiol, trends, monthly ranges and the forecast for the coming days.

Lake Sinoe, Romania
Lake Sinoe, Romania © By Nicu Farcaș, CC BY-SA 4.0

Current Water Temperature

17.9°C
Today
17.6°C
Yesterday
19.0°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 Lake Siutghiol today is 17.9°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 September 10 to October 11

Table of Daily Sea Temperature Data

Date Current Average Forecast
OCT 419.0°C15.0°C
OCT 518.9°C15.0°C
OCT 618.5°C15.0°C
OCT 718.5°C15.0°C
OCT 818.2°C15.0°C
OCT 918.0°C15.0°C
OCT 1017.6°C15.0°C
OCT 1117.9°C15.0°C
OCT 1215.0°C17.8°C
OCT 1315.0°C17.6°C
OCT 1415.0°C17.5°C
OCT 1515.0°C17.3°C
OCT 1615.0°C17.2°C
OCT 1715.0°C17.0°C
OCT 1815.0°C16.9°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
January2°C8°C12°C
February2°C7°C12°C
March4°C9°C14°C
April9°C14°C18°C
May11°C18°C23°C
June14°C20°C27°C
July18°C23°C29°C
August18°C24°C30°C
September14°C20°C25°C
October11°C15°C19°C
November8°C12°C15°C
December3°C8°C12°C

Lake Siutghiol: Water Temperature by Location

Lake Siutghiol: Weather Forecast

October 12

° / °
slight rain showers
rain: 45% | wind:

October 13

° / °
slight rain
rain: 45% | wind:

October 14

° / °
overcast
rain: 28% | wind:

October 15

° / °
slight rain showers
rain: 43% | wind:

Location & Local Information

Lake Siutghiol (in Romanian - Limanul Siutghiol) is a shallow coastal lagoon in south‑east Romania whose water temperature varies noticeably with the seasons. In spring surface temperatures typically rise from about 10–18 °C (50–64 °F) as the weather warms, while summer often brings the warmest conditions with averages around 22–28 °C (72–82 °F) in July and August. Early autumn sees a gradual cooling to roughly 12–20 °C (54–68 °F) depending on sunny days and wind, and winter temperatures commonly fall to near freezing or a few degrees above, around 0–6 °C (32–43 °F), when ice or very cold conditions may occasionally occur in sheltered spots.

Swimming in Lake Siutghiol is commonly practiced and generally allowed, especially during the summer when temperatures are comfortable for bathing; the lagoon’s relatively shallow, brackish waters warm faster than the open sea, making it attractive for recreation. However, water quality and safety can vary: nutrient-rich, stagnant conditions can favor algal blooms in hot weather, and local authorities may impose temporary restrictions or post advisories. Bathing areas are less regulated than adjacent Black Sea beaches, so swimmers should observe current local warnings, lifeguard presence, and visible water quality before entering.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lake Siutghiol?
Water Temperature in Lake Siutghiol today is 17.9°C.
What is the water temperature in Lake Siutghiol during the summer months?
The water temperature in Lake Siutghiol in summer fluctuates in the range of 14°C - 30°C.
Is it possible to swim in Lake Siutghiol (Romania) and what are the possibilities for this?
Yes, you can swim in Lake Siutghiol — there are public bathing spots and supervised beaches around Mamaia and Constanța plus opportunities for kayaking, windsurfing and boat rentals, but water quality and local restrictions vary so it’s best to use designated swimming areas and follow local advisories.