Karteros — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Karteros (Crete, Greece). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Karteros help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Karteros in the Sea of Crete today is 23°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
Water temperature in Karteros has risen over the last week and month. Currently, the sea water at this location is slightly warmer than average for this day in previous years.
According to our forecast, Water temperature in Karteros will be 22.9°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 2 | 21.0°C | 21.3°C | |
| JUN 3 | 21.2°C | 21.0°C | |
| JUN 4 | 21.6°C | 21.3°C | |
| JUN 5 | 22.2°C | 21.3°C | |
| JUN 6 | 22.3°C | 21.5°C | |
| JUN 7 | 22.7°C | 22.0°C | |
| JUN 8 | 22.8°C | 22.3°C | |
| JUN 9 | 23.1°C | 21.5°C | |
| JUN 10 | 23.0°C | 21.5°C | 23.0°C |
| JUN 11 | 21.8°C | 23.0°C | |
| JUN 12 | 22.3°C | 23.0°C | |
| JUN 13 | 22.5°C | 22.9°C | |
| JUN 14 | 22.3°C | 22.9°C | |
| JUN 15 | 22.5°C | 22.9°C | |
| JUN 16 | 22.8°C | 22.9°C | |
| JUN 17 | 22.5°C | 22.9°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.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Karteros is a coastal locality just east of Heraklion on the north shore of Crete, opening onto the northern Aegean waters. The sea here follows the island’s typical Mediterranean pattern, with cool winters and warm summers. Winter water temperatures (December–February) generally sit around 16–17 °C, making long swims brisk without thermal protection. In spring (March–May) the water gradually warms from about 17 °C in early March to roughly 20–21 °C by late May. Summer months (June–August) bring the highest temperatures, commonly ranging between 23 and 27 °C, with August often the warmest. During autumn (September–November) the sea slowly cools from about 24 °C in September down to roughly 20–22 °C by November. Local weather, winds and shallow bay conditions can cause modest day-to-day variation in these averages.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 15°C | 17°C | 19°C |
| February | 15°C | 16°C | 18°C |
| March | 15°C | 16°C | 18°C |
| April | 15°C | 17°C | 20°C |
| May | 16°C | 20°C | 23°C |
| June | 19°C | 22°C | 26°C |
| July | 23°C | 26°C | 28°C |
| August | 24°C | 26°C | 28°C |
| September | 23°C | 26°C | 28°C |
| October | 20°C | 23°C | 26°C |
| November | 19°C | 21°C | 24°C |
| December | 16°C | 19°C | 22°C |
* Click on a month to view detailed water temperature data.
Karteros: Weather Forecast
June 10
June 11
June 12
June 13
Location, Beaches & Local Information
Nearby Beaches & Facilities
Tobruk
Xenia
Amnisos
Karteros Beach
Beach Of Agios Theodoros
Arena Beach
Vathianos Kambos Beach
Knossos
Kokkini Beach
Swimming Conditions
Swimming at Karteros is popular in the warmer months and suits a range of beach holiday preferences. The long, sandy shoreline and generally shallow entry make the area attractive for families and casual swimmers once water temperatures climb above 20 °C, typically from late May onward. Peak comfort for open-water swimming is usually from June through September, when temperatures around 23–27 °C support prolonged baths and snorkeling without a wetsuit. The bay can also produce breezy conditions that appeal to wind- and kite-sports enthusiasts, so swimming conditions vary with wind and waves. Facilities, beachside tavernas and easy access from Heraklion add convenience for day trips. Outside the summer peak the cooler sea means shorter swims or wetsuit use, but the beach remains pleasant for walking and coastal recreation.