September weather forecastAcharnes, Greece
September
Weather in September
September, the first month of the autumn in Acharnes, is also a moderately hot month, with an average temperature varying between 26.7°C (80.1°F) and 20.9°C (69.6°F).Temperature
September marks a gentle change in average high-temperature, declining from August's hot 30.3°C (86.5°F) to a moderately hot 26.7°C (80.1°F). Acharnes cools down to an average low-temperature of 20.9°C (69.6°F) throughout the month of September.Humidity
In Acharnes, the average relative humidity in September is 59%.Rainfall
In Acharnes, in September, it is raining for 7 days, with typically 16mm (0.63") of accumulated precipitation. In Acharnes, Greece, during the entire year, the rain falls for 93.5 days and collects up to 308mm (12.13") of precipitation.Snowfall
In Acharnes, snow does not fall in March through December.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 06:55 and sunset at 19:54. On the last day of September, in Acharnes, sunrise is at 07:20 and sunset at 19:09 EEST.
Sunshine
In Acharnes, the average sunshine in September is 10h.UV index
The average daily maximum UV index in September in Acharnes is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Take necessary precautions - Defending against sun damage is advocated. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Acharnes, Greece
- Average high temperature in September: 26.7°C
The warmest months (with the highest average high temperature) are July and August (30.3°C).
The month with the lowest average high temperature is January (11.9°C).
- Average low temperature in September: 20.9°C
The month with the highest average low temperature is August (23.5°C).
The coldest month (with the lowest average low temperature) is January (7.5°C).
Average pressure in September
Acharnes, Greece
- Average pressure in September: 1014.3mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1011mbar).
Average wind speed in September
Acharnes, Greece
- Average wind speed in September: 14km/h
The windiest month (with the highest average wind speed) is August (17.1km/h).
The calmest month (with the lowest average wind speed) is May (11.8km/h).
Average humidity in September
Acharnes, Greece
- Average humidity in September: 59%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Acharnes, Greece
- Average rainfall in September: 16mm
The wettest months (with the highest rainfall) are January and December (49mm).
The driest month (with the least rainfall) is August (3mm).
Average rainfall days in September
Acharnes, Greece
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is December (12.3 days).
The month with the least rainy days is August (1.8 days).
Average snowfall in September
Acharnes, Greece
- Average snowfall in September: 0mm
The month with the highest snowfall is January (33mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Acharnes, Greece
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Acharnes, Greece
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 10h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in September
Acharnes, Greece
- Average sunshine days in September: 21 days
The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is January (15.9 days).
Average UV index in September
Acharnes, Greece
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Acharnes, Greece
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Acharnes, 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).
