September weather forecastOrnos, Greece
September
Weather in September
The first month of the autumn, September, is still a warm month in Ornos, Greece, with an average temperature ranging between max 24.2°C (75.6°F) and min 22.8°C (73°F).Temperature
September registers an average high-temperature of a still moderately hot 24.2°C (75.6°F), slightly varied from August's 26.1°C (79°F). Ornos notes a consistent average low-temperature of 22.8°C (73°F) during September nights.Humidity
The average relative humidity in September is 73%.Rainfall
In Ornos, during September, the rain falls for 4.4 days and regularly aggregates up to 9mm (0.35") of precipitation. In Ornos, during the entire year, the rain falls for 93 days and collects up to 255mm (10.04") of precipitation.Sea temperature
July through September, with an average sea temperature of 23°C (73.4°F), are months with the warmest seawater.Note: For those with a heightened sensitivity to cold, sunshine, wind, and outside temperature make a big difference in enjoying a swim at 23°C (73.4°F). (Olympic swimming regulations state a water temperature of 25°C (77°F) to 28°C (82.4°F).)
Daylight
In Ornos, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 06:49 and sunset at 19:47. On the last day of September, sunrise is at 07:13 and sunset at 19:03 EEST.
Sunshine
The average sunshine in September is 10.7h.UV index
In Ornos, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ornos, Greece
- Average high temperature in September: 24.2°C
The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (13.8°C).
- Average low temperature in September: 22.8°C
The month with the highest average low temperature is August (24.4°C).
The coldest month (with the lowest average low temperature) is January (11.9°C).
Average pressure in September
Ornos, Greece
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is December (1017.8mbar).
The month with the lowest atmospheric pressure is July (1009.2mbar).
Average wind speed in September
Ornos, Greece
- Average wind speed in September: 24.3km/h
The windiest month (with the highest average wind speed) is January (30km/h).
The calmest month (with the lowest average wind speed) is May (18.8km/h).
Average humidity in September
Ornos, Greece
- Average humidity in September: 73%
The month with the highest relative humidity is August (76%).
The months with the lowest relative humidity are January and December (71%).
Average rainfall in September
Ornos, Greece
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is January (53mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in September
Ornos, Greece
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is January (14.9 days).
The month with the least rainy days is August (0.8 days).
Average sea temperature in September
Ornos, Greece
- Average sea temperature in September: 23°C
The best months for swimming (with the highest average sea temperature) are July, August and September (23°C).
The coldest months (with the lowest average sea temperature) are February and March (15°C).
Average daylight in September /
Average sunshine in September
Ornos, 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: 10h and 42min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in September
Ornos, Greece
- Average sunshine days in September: 24.2 days
The month with the most sunshine days is July (30.1 days).
The month with the least sunshine days is January (12.4 days).
Average UV index in September
Ornos, Greece
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Ornos, Greece
- Average cloud cover in September: 10
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 3).
Average visibility in September
Ornos, 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).





