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Koper
Water Temperature in the Adriatic Sea in Koper, Slovenia: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Koper in Slovenia, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Koper
10.5°C
TODAY
10.3°C
YESTERDAY
10.1°C
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Adriatic Sea in Koper is 10.5°C. The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used.
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 for Adriatic Sea in Koper Over the Last 30 Days
The water temperature in Koper today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.
According to our forecast, the sea temperature in Koper will remain nearly unchanged in the coming days, its value will be 10.4°C.
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 across Slovenia to enhance accuracy.
Water temperature data for Koper and nearby towns and resorts 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.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| Feb 16 | 10.1°C | 9.8°C | |
| Feb 17 | 10.6°C | 9.5°C | |
| Feb 18 | 10.6°C | 9.3°C | |
| Feb 19 | 10.4°C | 10.0°C | |
| Feb 20 | 10.3°C | 10.3°C | |
| Feb 21 | 10.3°C | 9.8°C | |
| Feb 22 | 10.3°C | 10.3°C | |
| Feb 23 | 10.5°C | 10.0°C | |
| Feb 24 | 9.8°C | 10.4°C | |
| Feb 25 | 10.5°C | 10.4°C | |
| Feb 26 | 10.3°C | 10.4°C | |
| Feb 27 | 10.0°C | 10.3°C | |
| Feb 28 | 10.8°C | 10.4°C | |
| Mar 1 | 10.8°C | 10.4°C | |
| Mar 2 | 10.8°C | 10.4°C | |
| Mar 3 | 10.5°C | 10.4°C |
Sea Temperature in Koper Throughout the Year
Throughout the year, the sea temperature in Koper exceeds 77°F (25°C) for 60 days, exceeds 72°F (22°C) for 101 days, and exceeds 64°F (18°C) for 161 days.
Below is the annual chart of sea temperature changes in the Adriatic Sea in Koper.
January
| Minimum | Average | Maximum |
|---|---|---|
| 6°C | 10°C | 14°C |
February
| Minimum | Average | Maximum |
|---|---|---|
| 8°C | 10°C | 12°C |
March
| Minimum | Average | Maximum |
|---|---|---|
| 8°C | 11°C | 14°C |
April
| Minimum | Average | Maximum |
|---|---|---|
| 10°C | 13.5°C | 17°C |
May
| Minimum | Average | Maximum |
|---|---|---|
| 13°C | 18°C | 23°C |
June
| Minimum | Average | Maximum |
|---|---|---|
| 18°C | 22.5°C | 27°C |
July
| Minimum | Average | Maximum |
|---|---|---|
| 22°C | 25°C | 28°C |
August
| Minimum | Average | Maximum |
|---|---|---|
| 22°C | 25.5°C | 29°C |
September
| Minimum | Average | Maximum |
|---|---|---|
| 19°C | 23.5°C | 28°C |
October
| Minimum | Average | Maximum |
|---|---|---|
| 13°C | 18.5°C | 24°C |
November
| Minimum | Average | Maximum |
|---|---|---|
| 14°C | 17.5°C | 21°C |
December
| Minimum | Average | Maximum |
|---|---|---|
| 10°C | 13.5°C | 17°C |
Monthly Water Temperature Histogram for Adriatic Sea in Koper
You can explore detailed data on how the water temperature in Koper varies each month:
What Beaches Are There In and Around Koper?
Koper Beach
Koper Beach is a 5-stars sandy beach, is located directly in Koper. It has been awarded the prestigious Blue Flag, ensuring high environmental and quality standards. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Mestna Beach
Mestna Beach is a 2-stars sandy beach, is located directly in Koper. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Zusterna Beach
Zusterna Beach is a 5-stars sandy beach, is located directly in Koper. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Zusterna Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Grado
Grado is a 5-stars sandy beach, is located directly in Koper. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Grado is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Slovene Riviera
Slovene Riviera is a 3-stars sandy beach, is located directly in Koper. There is parking. There are restrooms. There are shops. There are cafés.
Ankaran Beach
Ankaran Beach is a 5-stars sandy beach, located in a 3 km (2 miles) radius of Koper. There is parking. There are restrooms. There are cafés. Ankaran Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Pokopalisce Skoljk
Pokopalisce Skoljk is a 1-stars sandy beach, located in a 3 km (2 miles) radius of Koper.
Hidden Rocky Beach
Hidden Rocky Beach is a 1-stars sandy beach, located in a 4 km (2 miles) radius of Koper.
Valdoltra Beach
Valdoltra Beach is a 1-stars sandy beach, located in a 4 km (2 miles) radius of Koper.
Jadranka Beach
Jadranka Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of Koper. There are lifeguards on the beach. There is parking. There are restrooms.
Kanegra
Kanegra is a 5-stars sandy beach, located in a 5 km (3 miles) radius of Koper. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Kanegra is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Debeli Rtic Beach
Debeli Rtic Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of Koper. There is parking. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Slepih In Slabovidnih Beach
Slepih In Slabovidnih Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of Koper. There are lifeguards on the beach. There is parking. There are restrooms. Slepih In Slabovidnih Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish.
Plaza Debeli Rtic
Plaza Debeli Rtic is a 5-stars sandy beach, located in a 5 km (3 miles) radius of Koper. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Izola Beach
Izola Beach is a 4-stars sandy beach, located in a 6 km (4 miles) radius of Koper. There are lifeguards on the beach. There is parking. There are restrooms. There are shops. There are cafés. Snorkeling is possible.
Svetilnik Beach
Svetilnik Beach is a 5-stars sandy beach, located in a 6 km (4 miles) radius of Koper. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Beach Svetilnik
Beach Svetilnik is a 4-stars sandy beach, located in a 6 km (4 miles) radius of Koper. There is parking. There are restrooms. There are cafés. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Beach Delfin
Beach Delfin is a 3-stars sandy beach, located in a 6 km (4 miles) radius of Koper. There is parking. There are cafés. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Delfin Beach
Delfin Beach is a 4-stars sandy beach, located in a 6 km (4 miles) radius of Koper. There is parking. There are restrooms. There are cafés. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Simonov Zaliv Beach
Simonov Zaliv Beach is a 5-stars sandy beach, located in a 6 km (4 miles) radius of Koper. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Simonov Zaliv Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Koper Weather
FEBRUARY 24
9°C / 11°C
overcast clouds: 85-100%humidity: 87% | wind: 1 km/h
FEBRUARY 25
8°C / 10°C
light rainhumidity: 90% | wind: 3 km/h
FEBRUARY 26
7°C / 10°C
light rainhumidity: 79% | wind: 5 km/h
FEBRUARY 27
7°C / 7°C
clear skyhumidity: 80% | wind: 3 km/h
Sea Temperature in the Adriatic Sea in Koper: General Trends and Swimming Opportunities
The Urban Municipality of Koper, Slovenia, located on the country's Adriatic coastline, experiences a Mediterranean climate characterized by warm summers and pleasant, mild winters. Its proximity to the sea moderates the temperature, bringing humid sea breezes, abundant sunshine, and rainfall evenly distributed throughout the year.
Koper is located in Europe in the Northern Hemisphere at a latitude of 46 degrees, along the shores of the Adriatic Sea. Koper lies within the Urban Municipality of Koper in Slovenia.
The average annual daytime air temperature in Koper is 17°C (63°F), with the average nighttime temperature being 10°C (50°F). The highest average daily temperature occurs in July, reaching 28°C (82°F), while the lowest is in January at 7°C (44°F). As for nighttime temperatures, the minimum average temperature of 2°C (36°F) is recorded in January, and the maximum is in July, reaching 20°C (67°F).
According to historical data, Koper experiences 105 rainy days per year, which accounts for 29 percent of all days in the year. On average, there are 9 rainy days each month. The wettest month is June, with 10 rainy days and 96 mm (3.8 inches) of precipitation, while the driest month is January, which typically has 7 rainy days and only 69 mm (2.7 inches) of precipitation.
The average annual water temperature in Adriatic Sea in Koper is 17°C (63°F). In January, the water reaches its lowest point of the year at 6°C (43°F), while in August, it peaks at 29°C (84°F). The months suitable for comfortable beach vacations and swimming in the Adriatic Sea are July, and August. During this period, the water temperature stays above 20°C (68°F) and can reach up to 29°C (84°F) on some days.
Geographical Location of Koper
Nearby Cities
Frequently Asked Questions About Koper and its Water Temperatures
What is the current sea temperature in Koper?
The water temperature today in the Adriatic Sea in Koper is 51°F (10.5°C).
In which months is the water temperature in Koper comfortable for swimming?
The water temperature in the Adriatic Sea in Koper is comfortable for swimming and beach vacations in July, and August.
What is the water temperature in Koper during the winter?
The water temperature in the Adriatic Sea in Koper during the winter ranges from 6°C to 17°C (43°F to 63°F).
What is the water temperature in Koper during the spring?
The water temperature in the Adriatic Sea in Koper during the spring ranges from 8°C to 23°C (46°F to 73°F).
What is the water temperature in Koper during the summer?
The water temperature in the Adriatic Sea in Koper during the summer ranges from 18°C to 29°C (64°F to 84°F).
What is the water temperature in Koper during the fall?
The water temperature in the Adriatic Sea in Koper during the fall ranges from 13°C to 28°C (55°F to 82°F).
Is it possible to swim in the sea in Koper at any time of the year?
The Adriatic Sea in Koper is quite cool, and swimming is only possible in May, June, July, August, September, October, and November when the water temperature reaches 21°C (70°F).
Is Koper a popular tourist destination for beach vacations?
Koper is a highly popular tourist destination for beach vacations, attracting large numbers of visitors every year due to its beautiful coastline, warm waters, and excellent resort facilities.
What sea temperatures can I expect in Koper in the next month?
In March, the water temperature in the Adriatic Sea in Koper will range between 46°F (8°C) and 57°F (14°C)