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Dej — Current Water Temperature, Annual Trends and Forecast

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

Someș River, Romania
Someș River, Romania © By Țetcu Mircea Rareș, CC BY-SA 4.0

Current Water Temperature

21.0°C
Today
21.5°C
Yesterday
19.1°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 Dej today is 21°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 June 21 to July 22

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUL 1519.1°C19.0°C
JUL 1619.5°C19.0°C
JUL 1719.9°C19.0°C
JUL 1820.4°C19.0°C
JUL 1920.5°C19.0°C
JUL 2021.2°C19.0°C
JUL 2121.5°C19.0°C
JUL 2221.5°C19.0°C
JUL 2319.0°C20.9°C
JUL 2419.0°C20.8°C
JUL 2519.0°C20.7°C
JUL 2619.0°C20.6°C
JUL 2719.0°C20.5°C
JUL 2819.0°C20.4°C
JUL 2919.0°C20.3°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
January1°C5°C8°C
February1°C5°C8°C
March3°C7°C10°C
April6°C10°C14°C
May9°C14°C18°C
June14°C18°C23°C
July15°C19°C24°C
August15°C19°C24°C
September11°C16°C20°C
October9°C12°C15°C
November4°C8°C10°C
December1°C5°C8°C

Dej: Weather Forecast

July 23

° / °
overcast
rain: 18% | wind:

July 24

° / °
slight rain showers
rain: 33% | wind:

July 25

° / °
fog
rain: 3% | wind:

July 26

° / °
fog
rain: 19% | wind:

July 27

° / °
moderate rain showers
rain: 33% | wind:

Location & Local Information

Dej, in north‑western Romania, sits near the Someș river and a number of small reservoirs and ponds that serve local recreation. Water temperatures in these inland bodies typically follow a seasonal pattern: in spring surface temperatures rise from about 6–16 °C (43–61 °F) as ice melts and air warms; in summer they commonly reach 20–26 °C (68–79 °F), with occasional warm spells pushing readings to 27–28 °C (80–82 °F); autumn sees cooling to roughly 10–18 °C (50–64 °F); and in winter surface temperatures often approach freezing, around 0–4 °C (32–39 °F), with many smaller lakes or shallow areas icing over. Actual values vary with depth, weather, and water inflow.

Swimming opportunities exist mainly during the warmer months and depend on the specific site and local rules. Some reservoirs and managed beaches close to Dej permit bathing when water quality and safety checks are satisfactory, while river locations may be discouraged because of currents, variable depth and pollution. There are usually no lifeguards outside formal recreational areas, so swimming is most appropriate at designated spots that display permission and water‑quality information. Visitors should follow posted signs, local guidance and seasonal advisories to ensure safe bathing.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Dej?
Water Temperature in Dej today is 21°C.
What is the water temperature in Dej during the summer months?
The water temperature in Dej in summer fluctuates in the range of 14°C - 24°C.
Is it possible to swim in Dej (Romania) in Someș and what are the possibilities for this?
You can swim in places along the Someș in Dej during warm months, but there are no widely promoted supervised bathing zones so water quality, currents and local rules vary and make it somewhat unofficial and potentially risky, so many people prefer safer alternatives like the town's public swimming pool or nearby designated recreational lakes and beaches.