September weather forecastKatastárion, Greece
September
Weather in September
The first month of the autumn, September, is still a warm month in Katastárion, Greece, with an average temperature fluctuating between 25.6°C (78.1°F) and 23.9°C (75°F).An excellent water temperature of 25.9°C (78.6°F) and only 3.8 rainfall days, with 3mm (0.12") of accumulated rainfall, makes September a prime for swimming and other water activities.
Temperature
Shifting into September, Katastárion records an average high-temperature of a still warm 25.6°C (78.1°F), presenting minor fluctuations compared to the previous month. Katastárion experiences a steady nighttime temperature of 23.9°C (75°F) throughout the month of September.Humidity
The months with the lowest humidity are September and December, with an average relative humidity of 67%.Rainfall
Months with rainfall in Katastárion are January through July, September through December. September is the first month it rains in Katastárion. Throughout September, in the average 3.8 rainfall days, it receives 3mm (0.12") of precipitation. Throughout the year, in Katastárion, there are 51.3 rainfall days, and 100mm (3.94") of precipitation is accumulated.Sea temperature
In Katastárion, Greece, in September, the average water temperature is 25.9°C (78.6°F).Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.
Daylight
The average length of the day in September in Katastárion is 12h and 26min.On the first day of the month, sunrise is at 07:07 and sunset at 20:06. On the last day of September, sunrise is at 07:32 and sunset at 19:21 EEST.
Sunshine
In September, the average sunshine is 9.6h.UV index
In Katastárion, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be on guard! The reflective nature of sand and water boosts UV exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Katastárion, Greece
- Average high temperature in September: 25.6°C
The warmest month (with the highest average high temperature) is August (28.2°C).
The month with the lowest average high temperature is January (14.2°C).
- Average low temperature in September: 23.9°C
The month with the highest average low temperature is August (26.3°C).
The coldest month (with the lowest average low temperature) is January (12.2°C).
Average pressure in September
Katastárion, Greece
- Average pressure in September: 1014.7mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1011.9mbar).
Average wind speed in September
Katastárion, Greece
- Average wind speed in September: 14.2km/h
The windiest month (with the highest average wind speed) is January (21km/h).
The calmest month (with the lowest average wind speed) is June (14km/h).
Average humidity in September
Katastárion, Greece
- Average humidity in September: 67%
The month with the highest relative humidity is April (73%).
The months with the lowest relative humidity are September and December (67%).
Average rainfall in September
Katastárion, Greece
- Average rainfall in September: 3mm
The wettest month (with the highest rainfall) is November (26mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in September
Katastárion, Greece
- Average rainfall days in September: 3.8 days
The months with the highest number of rainy days are October and November (6.9 days).
The month with the least rainy days is August (0.3 days).
Average sea temperature in September
Katastárion, Greece
- Average sea temperature in September: 25.9°C
The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (15.4°C).
Average daylight in September /
Average sunshine in September
Katastárion, Greece
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in September
Katastárion, Greece
- Average sunshine days in September: 24 days
The month with the most sunshine days is August (30.2 days).
The month with the least sunshine days is November (19.5 days).
Average UV index in September
Katastárion, Greece
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).
Average cloud cover in September
Katastárion, Greece
- Average cloud cover in September: 14
The month with the most cloud cover is January (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
Katastárion, Greece
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
