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Reni — Current Water Temperature, Annual Trends and Forecast

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

Danube River, Austria
Danube River, Austria © By C.Stadler/Bwag, CC BY-SA 4.0

Current Water Temperature

20.8°C
Today
20.1°C
Yesterday
19.4°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 Reni today is 20.8°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 319.2°C18.0°C
JUN 419.2°C18.0°C
JUN 519.2°C18.0°C
JUN 619.6°C18.0°C
JUN 720.0°C18.0°C
JUN 820.1°C18.0°C
JUN 1020.8°C18.0°C
JUN 1118.0°C20.7°C
JUN 1218.0°C20.5°C
JUN 1318.0°C20.4°C
JUN 1418.0°C20.2°C
JUN 1518.0°C20.1°C
JUN 1618.0°C20.0°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
March4°C9°C13°C
April8°C12°C15°C
May9°C14°C19°C
June13°C18°C22°C
July15°C19°C24°C
August15°C19°C24°C
September12°C17°C21°C
October10°C14°C17°C
November6°C10°C13°C
December2°C7°C11°C

Reni: Weather Forecast

June 9

° / °
slight rain showers
rain: 66% | wind:

June 10

° / °
fog
rain: 18% | wind:

June 11

° / °
slight thunderstorm
rain: 44% | wind:

June 12

° / °
overcast
rain: 15% | wind:

June 13

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

Location & Local Information

Reni is a small port city in the far southwest of Odesa Oblast, located right on the bank of the Danube River, near the meeting point of Ukraine, Romania, and Moldova. In this section, the Danube is wide and slow-flowing, which allows the water to warm up fairly well during summer. From late May to early September, the water temperature usually stays between 21–26°C, and on especially hot days it can rise even higher, making short swims refreshing and comfortable.

However, swimming in the Danube at Reni is not without caution. The river here is part of a busy navigation route with occasional cargo and border patrol vessels, so swimming directly near the port or in shipping zones is unsafe and not allowed. Locals who swim usually choose calmer spots slightly away from the main current or near small inlets and sandy banks outside the urban area. The water quality varies — during high flow periods it can become muddy, but on quiet days it’s relatively clean and pleasant for bathing.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Reni?
Water Temperature in Reni today is 20.8°C.
What is the water temperature in Reni during the summer months?
The water temperature in Reni in summer fluctuates in the range of 13°C - 24°C.
Is it possible to swim in Reni (Ukraine) in Danube and what are the possibilities for this?
Yes — swimming is possible around Reni in calmer Danube arms, backwaters and local river beaches, but the main channel is unsafe because of strong currents and shipping, so check water quality, lifeguard presence and any border or restricted-area rules before entering.