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Thyamis River — Current Water Temperature, Annual Trends and Forecast

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

Thyamis River, Greece
Thyamis River, Greece © By L.Ch, CC BY 2.0 de

Current Water Temperature

23.3°C
Today
23.4°C
Yesterday
24.7°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 the Thyamis River today is 23.3°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 August 20 to September 20

Table of Daily Sea Temperature Data

Date Current Average Forecast
SEP 1324.7°C23.2°C
SEP 1424.4°C23.2°C
SEP 1524.2°C23.2°C
SEP 1624.0°C23.2°C
SEP 1723.9°C23.2°C
SEP 1823.8°C23.2°C
SEP 1923.4°C23.2°C
SEP 2023.3°C23.2°C
SEP 2123.2°C23.3°C
SEP 2223.2°C23.3°C
SEP 2323.2°C23.3°C
SEP 2423.2°C23.3°C
SEP 2523.2°C23.3°C
SEP 2623.2°C23.3°C
SEP 2723.2°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
January6°C9°C12°C
February6°C9°C12°C
March9°C12°C15°C
April9°C13°C17°C
May10°C15°C21°C
June16°C20°C25°C
July18°C23°C29°C
August18°C24°C30°C
September18°C23°C29°C
October14°C18°C20°C
November11°C15°C18°C
December8°C11°C14°C

Thyamis River: Water Temperature by Location

Thyamis River: Weather Forecast

September 21

° / °
overcast
rain: 4% | wind:

September 22

° / °
slight rain showers
rain: 51% | wind:

September 23

° / °
mainly clear
rain: 0% | wind:

September 24

° / °
overcast
rain: 7% | wind:

September 25

° / °
slight thunderstorm
rain: 57% | wind:

September 26

° / °
slight thunderstorm
rain: 59% | wind:

Location & Local Information

Mouth:
• location Ionian Sea
• coordinates 39°35′12″N 20°8′32″E
Length 115 km (71 mi)

The Thyamis (Θύαμις), known today as the Kalamas River in Epirus, is a mainly mountain-fed river so its water temperature shows marked seasonal variation. In winter months the river typically cools to around 6–10 °C (43–50 °F), while spring brings a gradual rise to roughly 10–16 °C (50–61 °F). Peak summer temperatures in calmer stretches and slower meanders can reach about 18–24 °C (64–75 °F), and autumn usually sees a cooling trend to approximately 14–20 °C (57–68 °F). Local microclimates, recent rainfall, snowmelt and depth all affect these figures, so temperatures can be lower in fast-flowing upper reaches and slightly higher in sunlit pools and the delta area.

Swimming in the Thyamis is possible in many places, especially during summer when water is warmest and flows are lower, but it is not uniformly recommended everywhere. Some sections are shallow and suitable for wading, while others have strong currents, variable depth and submerged hazards that make bathing risky. Water quality can fluctuate after heavy rains or due to agricultural runoff, so swimmers should look for local guidance, observe signage, prefer designated or commonly used swimming spots near the delta where conditions are calmer, and exercise caution regarding currents and temperature differences between sunlit pools and faster channels.

Nearby Rivers

Frequently Asked Questions

What is the current water temperature in the Thyamis River?
Water Temperature in the Thyamis River today is 23.3°C.
What is the water temperature in the Thyamis River during the summer months?
The water temperature in the Thyamis River in summer fluctuates in the range of 16°C - 30°C.
Is it possible to swim in Thyamis (Greece) and what are the possibilities for this?
Yes — you can swim in the Thyamis River in Greece, especially in calm stretches and at its mouth on the Ionian coast where shallow sandy or pebbly banks, natural pools and quiet bays allow bathing (including from kayaks or small boats), but conditions, currents and water quality vary seasonally so you should choose sheltered spots and follow local guidance.