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Sea Temperature in Istanbul in September
Complete information on the sea temperature range in the Sea of Marmara in Istanbul in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Istanbul. 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 Istanbul in September
20°C
MINIMUN
23°C
AVERAGE
26°C
MAXIMUM
Historical Data of Water Temperature in September in Istanbul
Water Temperature Chart for Sea of Marmara in Istanbul in September
Sea Temperature Table in Istanbul in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 25°C | 25°C | 24°C | 24.8°C |
| Sep 2 | 25°C | 25°C | 24°C | 24.8°C |
| Sep 3 | 25°C | 25°C | 24°C | 24.8°C |
| Sep 4 | 25°C | 26°C | 24°C | 25.0°C |
| Sep 5 | 25°C | 25°C | 24°C | 24.8°C |
| Sep 6 | 24°C | 25°C | 24°C | 24.5°C |
| Sep 7 | 24°C | 25°C | 23°C | 24.3°C |
| Sep 8 | 22°C | 25°C | 23°C | 24.0°C |
| Sep 9 | 24°C | 24°C | 23°C | 24.0°C |
| Sep 10 | 23°C | 25°C | 23°C | 24.0°C |
| Sep 11 | 22°C | 25°C | 23°C | 23.8°C |
| Sep 12 | 22°C | 24°C | 23°C | 23.5°C |
| Sep 13 | 23°C | 24°C | 22°C | 23.8°C |
| Sep 14 | 23°C | 24°C | 22°C | 23.5°C |
| Sep 15 | 22°C | 24°C | 22°C | 23.3°C |
| Sep 16 | 22°C | 25°C | 22°C | 23.8°C |
| Sep 17 | 22°C | 24°C | 22°C | 23.3°C |
| Sep 18 | 22°C | 24°C | 22°C | 23.3°C |
| Sep 19 | 23°C | 24°C | 21°C | 23.3°C |
| Sep 20 | 23°C | 24°C | 21°C | 23.0°C |
| Sep 21 | 23°C | 23°C | 21°C | 22.8°C |
| Sep 22 | 23°C | 24°C | 21°C | 23.0°C |
| Sep 23 | 22°C | 23°C | 21°C | 22.3°C |
| Sep 24 | 23°C | 24°C | 21°C | 23.0°C |
| Sep 25 | 22°C | 24°C | 20°C | 22.3°C |
| Sep 26 | 21°C | 23°C | 20°C | 21.8°C |
| Sep 27 | 22°C | 24°C | 20°C | 22.3°C |
| Sep 28 | 22°C | 24°C | 20°C | 22.3°C |
| Sep 29 | 22°C | 23°C | 20°C | 22.0°C |
Istanbul Climate and Swimming Opportunities in September
25°C
Average Day Air Temperature
16°C
Average Night Air Temperature
51 mm
Precipitation Amount per Month
6 days
Number of Rainy Days
12 hrs
Daylight
per Day
9 hrs
Sunshine
per Day
9 km/h
Average Wind Speed
75%
Average
humidity
Istanbul lies within the Istanbul Province in Turkey. The average daytime temperature in Istanbul in September is 25°C (77°F), while the nighttime average is 16°C (61°F). There are typically six rainy days during the month, with a total precipitation of 51 mm (2.0 inches). The daylight duration in September in Istanbul is 12 hours, with an average of 9 hours of sunshine per day. The average wind speed in September is 9 km/h (6 mph), and the humidity level is around 75%.
The water temperature in Istanbul 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 23°C (73°F) in the last ten days. Overall, the average sea temperature in Istanbul for September is 24°C (75°F). Perfect swimming weather — warm water and hot air make for an enjoyable and relaxing experience.
Sea Temperature in September in Nearby Cities
Frequently Asked Questions About Water Temperatures in September in Istanbul
What is the sea temperature in Istanbul in September?
The water temperature in the Sea of Marmara in Istanbul in September ranges from 21°C to 25°C (70°F to 77°F).
Is it possible to swim in the Sea of Marmara in Istanbul in September?
The average sea temperature in Istanbul in September is 24°C (75°F), and the air temperature is 25°C (77°F), so perfect swimming weather — warm water and hot air make for an enjoyable and relaxing experience.