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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

25.0°C
Today
26.5°C
Yesterday
26.5°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 25°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 July 31 to August 31

Table of Daily Sea Temperature Data

Date Current Average Forecast
AUG 2426.5°C23.6°C
AUG 2526.4°C23.6°C
AUG 2626.5°C23.6°C
AUG 2726.5°C23.6°C
AUG 2826.5°C23.6°C
AUG 2926.6°C23.6°C
AUG 3026.5°C23.6°C
AUG 3126.4°C23.6°C
SEP 120.0°C24.8°C
SEP 220.0°C24.5°C
SEP 320.0°C24.3°C
SEP 420.0°C24.0°C
SEP 520.0°C23.8°C
SEP 620.0°C23.5°C
SEP 720.0°C23.3°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

September 1

° / °
mainly clear
rain: 0% | wind:

September 2

° / °
overcast
rain: 3% | wind:

September 3

° / °
slight rain
rain: 11% | wind:

September 4

° / °
overcast
rain: 8% | wind:

September 5

° / °
clear sky
rain: 0% | wind:

September 6

° / °
overcast
rain: 3% | 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 25°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.