September weather forecastMarmaris, Turkey

September
Weather in September
In September, Marmaris experiences a gentle drop in temperature as autumn starts to set in. Sea temperatures remain relatively high, enticing visitors to enjoy the coast before winter. Although daylight hours are on the decrease, sunshine hours remain reasonably ample. The city witnesses a slight increase in rainfall, although it's still relatively dry compared to the start of the year. Rainfall measures roughly 25mm (0.98") this month, an increase from the 8mm (0.31") recorded in August.Temperature
September is characterized by a slight reduction in average high-temperature, easing from a tropical 34.3°C (93.7°F) in August to a still hot 30.8°C (87.4°F). Marmaris, during the month of September, experiences an average low-temperature of 20°C (68°F).Rainfall
In Marmaris, Turkey, in September, during 2.1 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, there are 83 rainfall days, and 1233mm (48.54") of precipitation is accumulated.Sea temperature
In Marmaris, the average seawater temperature in September is 26.4°C (79.5°F).Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.
Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 06:38 and sunset at 19:35. On the last day of the month, sunrise is at 07:01 and sunset at 18:51 +03.
Sunshine
In September, the average sunshine is 9.1h.UV index
In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 7 during September translates into the following guidance:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be wary! Reflections from sand and water make UV radiation more intense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Marmaris, Turkey
- Average high temperature in September: 30.8°C
The warmest month (with the highest average high temperature) is July (34.5°C).
The month with the lowest average high temperature is January (15.1°C).
- Average low temperature in September: 20°C
The month with the highest average low temperature is August (23.2°C).
The coldest months (with the lowest average low temperature) are January and February (7°C).
Average rainfall in September
Marmaris, Turkey
- Average rainfall in September: 24.5mm
The wettest month (with the highest rainfall) is December (289.9mm).
The driest month (with the least rainfall) is August (7.9mm).
Average rainfall days in September
Marmaris, Turkey
- Average rainfall days in September: 2.1 days
The month with the highest number of rainy days is January (13.7 days).
The month with the least rainy days is August (1 days).
Average sea temperature in September
Marmaris, Turkey
- Average sea temperature in September: 26.4°C
The best month for swimming (with the highest average sea temperature) is August (27.2°C).
The coldest months (with the lowest average sea temperature) are February and March (16.8°C).
Average daylight in September /
Average sunshine in September
Marmaris, Turkey
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average UV index in September
Marmaris, Turkey
- Average UV index in September: 7
The months with the highest UV index are June and July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).





