September Weather in Kythnos, Greece

Last updated: August 23, 2025

In September, the average temperature in Kythnos, Greece is a pleasant 24°C (75°F). While you can expect minimums of 19°C (66°F) and maximums of 28°C (82°F), a slight chance of precipitation—around 10 mm (0.4 in) over just 1 day—adds a refreshing touch. With an average humidity of 65%, you'll find the climate comfortably warm and inviting.

September Temperature in Kythnos

In September in Kythnos, the average temperature is 24°C (75°F). The maximum can reach 28°C (82°F), and the minimum can be as low as 19°C (66°F). This pleasant climate makes Kythnos an ideal destination for travelers looking to enjoy mild and comfortable weather.

September Weather in Kythnos: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kythnos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kythnos, September typically has an average temperature of 24°C (75°F), with highs reaching up to 28°C (82°F) and lows dropping to around 19°C (66°F).

Data source: Temperature data for Kythnos generated using information from the Copernicus Climate Change Service.

September Precipitation in Kythnos

In Kythnos in September, the precipitation amount is 10 mm (0.4 in) over the course of 1 day.

September Precipitation Trends in Kythnos

The chart displays monthly precipitation patterns in Kythnos, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Kythnos, September typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Kythnos

In Kythnos in September humidity is 65%. With average temperature 24°C (75°F), this humidity feels like a warm blanket enveloping you, making outdoor activities a bit sticky but still enjoyable for exploring sights and sounds.

September Average Humidity in Kythnos

This chart illustrates the average monthly humidity levels in Kythnos, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Kythnos is approximately 65%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kythnos

In Kythnos in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Kythnos.

Maximum UV Index Levels in Kythnos for September

The chart shows the monthly maximum UV Index (UVI) for Kythnos in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Kythnos typically reaches 8, which falls under the very high exposure category.

Data source: Kythnos September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Kythnos Compares to Other Months

Weather in Kythnos varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kythnos, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Kythnos, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (55°F)	86 mm (3.4 inches)	76%	moderate
February Weather	13°C (56°F)	53 mm (2.1 inches)	75%	moderate
March Weather	14°C (57°F)	36 mm (1.4 inches)	74%	high
April Weather	15°C (60°F)	18 mm (0.7 inches)	75%	very high
May Weather	19°C (66°F)	8 mm (0.3 inches)	77%	very high
June Weather	23°C (73°F)	5 mm (0.2 inches)	71%	very high
July Weather	25°C (78°F)	1 mm (0.0 inches)	68%	very high
August Weather	26°C (79°F)	1 mm (0.0 inches)	63%	very high
September Weather	24°C (75°F)	10 mm (0.4 inches)	65%	very high
October Weather	21°C (69°F)	24 mm (0.9 inches)	72%	high
November Weather	18°C (64°F)	50 mm (2.0 inches)	75%	moderate
December Weather	15°C (59°F)	92 mm (3.6 inches)	76%	moderate