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.
Current Water Temperature
Water Temperature in Dej today is 18.6°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| AUG 24 | 21.0°C | 19.0°C | |
| AUG 25 | 20.5°C | 19.0°C | |
| AUG 26 | 20.5°C | 19.0°C | |
| AUG 27 | 20.0°C | 19.0°C | |
| AUG 28 | 20.5°C | 19.0°C | |
| AUG 29 | 20.2°C | 19.0°C | |
| AUG 30 | 19.9°C | 19.0°C | |
| AUG 31 | 19.7°C | 19.0°C | |
| SEP 1 | 16.0°C | 18.5°C | |
| SEP 2 | 16.0°C | 18.3°C | |
| SEP 3 | 16.0°C | 18.2°C | |
| SEP 4 | 16.0°C | 18.1°C | |
| SEP 5 | 16.0°C | 18.0°C | |
| SEP 6 | 16.0°C | 17.8°C | |
| SEP 7 | 16.0°C | 17.7°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 |
|---|---|---|---|
| January | 1°C | 5°C | 8°C |
| February | 1°C | 5°C | 8°C |
| March | 3°C | 7°C | 10°C |
| April | 6°C | 10°C | 14°C |
| May | 9°C | 14°C | 18°C |
| June | 14°C | 18°C | 23°C |
| July | 15°C | 19°C | 24°C |
| August | 15°C | 19°C | 24°C |
| September | 11°C | 16°C | 20°C |
| October | 9°C | 12°C | 15°C |
| November | 4°C | 8°C | 10°C |
| December | 1°C | 5°C | 8°C |
Dej: Weather Forecast
September 1
September 2
September 3
September 4
September 5
September 6
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.