Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The beginning of September brings a minor change in the average high-temperature, shifting from a hot 30.3°C (86.5°F) in August to a moderately hot 26.7°C (80.1°F). Throughout the month of September, Acharnes expects an average low of 20.9°C (69.6°F).Humidity
In September, the average relative humidity in Acharnes, Greece, is 59%.Rainfall
In Acharnes, Greece, during September, the rain falls for 7 days and regularly aggregates up to 16mm (0.63") of 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 September in Acharnes, sunrise is at 06:55 and sunset at 19:54. On the last day of the month, sunrise is at 07:20 and sunset at 19:09 EEST.
Sunshine
In September, the average sunshine is 10h.UV index
In Acharnes, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 5 during September leads to these advisories:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the usual temperature for Acharnes in September?
What is the average humidity in September in Acharnes?
How many days does it rain in September in Acharnes?
When it does not snow in Acharnes?
How many hours of daylight does Acharnes have in September?
When is the sunrise / sunset in September in Acharnes?
How many hours of sunshine does Acharnes have in September?
How high is the UV index in September in Acharnes?
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 2min
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).
Acharnes, Greece
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