Arachthos River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Arachthos River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Arachthos River today is 19.8°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 |
|---|---|---|---|
| JUN 3 | 19.3°C | 18.0°C | |
| JUN 4 | 19.2°C | 18.0°C | |
| JUN 5 | 19.1°C | 18.0°C | |
| JUN 6 | 19.1°C | 18.0°C | |
| JUN 7 | 19.1°C | 18.0°C | |
| JUN 8 | 19.2°C | 18.0°C | |
| JUN 11 | 18.0°C | 19.7°C | |
| JUN 12 | 18.0°C | 19.6°C | |
| JUN 13 | 18.0°C | 19.5°C | |
| JUN 14 | 18.0°C | 19.4°C | |
| JUN 15 | 18.0°C | 19.4°C | |
| JUN 16 | 18.0°C | 19.3°C | |
| JUN 17 | 18.0°C | 19.2°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 | 4°C | 8°C | 10°C |
| February | 4°C | 8°C | 10°C |
| March | 7°C | 10°C | 13°C |
| April | 8°C | 11°C | 15°C |
| May | 9°C | 14°C | 19°C |
| June | 14°C | 18°C | 23°C |
| July | 17°C | 21°C | 26°C |
| August | 17°C | 21°C | 26°C |
| September | 16°C | 20°C | 25°C |
| October | 12°C | 16°C | 18°C |
| November | 9°C | 13°C | 16°C |
| December | 5°C | 9°C | 12°C |
Arachthos River: Water Temperature by Location
Arachthos River: Weather Forecast
June 9
June 10
June 11
June 12
June 13
June 14
Location & Local Information
Source:
• location Pindus mountains
Mouth:
• location Ionian Sea
• coordinates 39°0′45″N 21°4′19″E
Length 110 km (68 mi)
The Arachthos (Άραχθος) is a mountain-fed river in Epirus whose water temperature reflects elevation, seasonal runoff and human interventions such as reservoirs and dam releases. In winter the river is cold, typically around 4–8 °C (39–46 °F) in most reaches; spring warms as snowmelt and sunshine raise temperatures to roughly 8–14 °C (46–57 °F). During summer the lowest, slow-flowing stretches and pools near Arta can reach about 16–24 °C (61–75 °F), though upland and shaded canyon sections often remain much cooler. Autumn cooling usually yields mid-range temperatures of roughly 10–16 °C (50–61 °F). Local variations are common: depth, flow speed, shading and releases from the Pournari reservoir can make downstream water noticeably colder even in hot weather.
Swimming is possible in many parts of the Arachthos, especially during the warmest months in slow, shallow stretches where temperatures approach the mid-20s Celsius. However swimming is not universally advisable; strong currents, submerged rocks, sudden temperature drops, and restricted zones near dams or hydro facilities make caution essential. Local signage, official restrictions and seasonal flow conditions should be checked, and swimmers should prefer calm, supervised spots or areas known to be safe rather than fast or engineered sections of the river.