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Sea Temperature in Koper in September

Koper

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Complete information on the sea temperature range in the Adriatic Sea in Koper in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Koper. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Koper in September

66°F

MINIMUN

74°F

AVERAGE

82°F

MAXIMUM

Historical Data of Water Temperature in September in Koper

Water Temperature Chart for Adriatic Sea in Koper in September

Sea Temperature Table in Koper in September Over the Past Years

Day202420232022Average
Sep 177°C77°C77°C78°C
Sep 275°C77°C77°C78°C
Sep 375°C77°C77°C78°C
Sep 475°C77°C77°C78°C
Sep 573°C75°C75°C76°C
Sep 675°C77°C75°C78°C
Sep 775°C75°C75°C77°C
Sep 875°C77°C75°C77°C
Sep 975°C77°C73°C77°C
Sep 1075°C75°C73°C76°C
Sep 1173°C75°C73°C75°C
Sep 1275°C75°C73°C76°C
Sep 1375°C75°C73°C76°C
Sep 1473°C75°C72°C75°C
Sep 1573°C75°C72°C75°C
Sep 1675°C75°C72°C74°C
Sep 1775°C75°C72°C74°C
Sep 1873°C75°C70°C73°C
Sep 1975°C75°C70°C73°C
Sep 2073°C75°C70°C73°C
Sep 2172°C73°C70°C72°C
Sep 2272°C75°C68°C72°C
Sep 2372°C73°C68°C71°C
Sep 2472°C73°C68°C71°C
Sep 2570°C73°C68°C70°C
Sep 2672°C73°C68°C71°C
Sep 2772°C72°C66°C70°C
Sep 2872°C72°C66°C70°C
Sep 2972°C73°C66°C70°C

Koper Climate and Swimming Opportunities in September

72°F

Average Day Air Temperature

59°F

Average Night Air Temperature

4 in

Precipitation Amount per Month

10 days

Number of Rainy Days

12 hrs

Daylight
per Day

7 hrs

Sunshine
per Day

5 mph

Average Wind Speed

71%

Average
humidity

Koper lies within the Urban Municipality of Koper in Slovenia. The average daytime temperature in Koper in September is 22°C (72°F), while the nighttime average is 15°C (59°F). There are typically 10 rainy days during the month, with a total precipitation of 114 mm (4.5 inches). The daylight duration in September in Koper is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in September is 8 km/h (5 mph), and the humidity level is around 71%.

The water temperature in Koper in September ranges from 21°C to 25°C (70°F to 77°F). At the beginning of the month, the average temperature is around 25°C (77°F), shifting to 24°C (75°F) by mid-September and reaching 22°C (72°F) in the last ten days. Overall, the average sea temperature in Koper for September is 24°C (75°F). Optimal swimming conditions. The water is warm, and the air is comfortable for drying off and sunbathing.

Frequently Asked Questions About Water Temperatures in September in Koper

What is the sea temperature in Koper in September?

The water temperature in the Adriatic Sea in Koper in September ranges from 21°C to 25°C (70°F to 77°F).

Is it possible to swim in the Adriatic Sea in Koper in September?

The average sea temperature in Koper in September is 24°C (75°F), and the air temperature is 22°C (72°F), so optimal swimming conditions. The water is warm, and the air is comfortable for drying off and sunbathing.