Peiros River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Peiros River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Peiros River today is 18.4°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 |
|---|---|---|---|
| OCT 15 | 20.4°C | 16.0°C | |
| OCT 16 | 20.6°C | 16.0°C | |
| OCT 17 | 19.9°C | 16.0°C | |
| OCT 18 | 18.7°C | 16.0°C | |
| OCT 19 | 18.8°C | 16.0°C | |
| OCT 20 | 18.9°C | 16.0°C | |
| OCT 21 | 18.5°C | 16.0°C | |
| OCT 22 | 18.4°C | 16.0°C | |
| OCT 23 | 16.0°C | 18.3°C | |
| OCT 24 | 16.0°C | 18.2°C | |
| OCT 25 | 16.0°C | 18.0°C | |
| OCT 26 | 16.0°C | 17.9°C | |
| OCT 27 | 16.0°C | 17.8°C | |
| OCT 28 | 16.0°C | 17.7°C | |
| OCT 29 | 16.0°C | 17.6°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 | 6°C | 9°C | 13°C |
| February | 6°C | 9°C | 12°C |
| March | 6°C | 9°C | 12°C |
| April | 9°C | 13°C | 17°C |
| May | 13°C | 18°C | 22°C |
| June | 17°C | 21°C | 26°C |
| July | 18°C | 23°C | 29°C |
| August | 19°C | 24°C | 29°C |
| September | 18°C | 23°C | 28°C |
| October | 12°C | 16°C | 18°C |
| November | 9°C | 13°C | 16°C |
| December | 9°C | 13°C | 16°C |
Peiros River: Water Temperature by Location
Peiros River: Weather Forecast
October 22
October 23
October 24
October 25
October 26
October 27
Location & Local Information
Source:
• location Achaea
Mouth:
• location Gulf of Patras
• coordinates 38°9′4″N 21°34′25″E
Length 42.6 km (26.5 mi)
The Peiros (Πείρος) is a medium-sized river in Achaea, Peloponnese, whose water temperatures vary with season and location along its course. In winter the river typically cools to about 8–12 °C (46–54 °F), while spring sees a rise to roughly 10–18 °C (50–64 °F) as snowmelt and rainfall moderate. Summer temperatures in shallow, sun-exposed lower reaches can reach about 20–26 °C (68–79 °F), though shaded pools and spring-fed sections remain several degrees cooler. In autumn the river commonly ranges from 16–22 °C (61–72 °F) as air temperatures fall and flows increase. Short-term fluctuations occur after storms, when colder, turbid water can lower temperatures noticeably.
Swimming in the Peiros is possible in many accessible stretches, especially in calm lower reaches and wider pools, but it is not uniformly regulated as a formal bathing area. Whether it is advisable depends on local conditions: adequate depth, gentle current, clear water quality and absence of submerged hazards make swimming acceptable, while strong currents, sudden flow changes after rain, agricultural runoff or private/ protected land can render sections unsafe or off-limits. Visitors should heed local signage, ask residents, and exercise caution regarding current, depth and water clarity before entering.