September weather forecastIerissos, Greece
September
Weather in September
September, the first month of the autumn in Ierissos, is still a warm month, with an average temperature ranging between min 20.3°C (68.5°F) and max 23.9°C (75°F).Temperature
Ierissos's progression into September involves a gentle drop in the average high-temperature, from a warm 27.8°C (82°F) in August to a still moderately hot 23.9°C (75°F). Ierissos observes a slightly reduced average nighttime temperature of 20.3°C (68.5°F) during September.Humidity
In September, the average relative humidity is 65%.Rainfall
In September, in Ierissos, the rain falls for 10.6 days. Throughout September, 42mm (1.65") of precipitation is accumulated. Throughout the year, there are 141 rainfall days, and 429mm (16.89") of precipitation is accumulated.Snowfall
In Ierissos, snow does not fall in April through November.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 06:52 and sunset at 19:56. On the last day of the month, sunrise is at 07:20 and sunset at 19:08 EEST.
Sunshine
In Ierissos, the average sunshine in September is 9.9h.UV index
In September, the average daily maximum UV index in Ierissos is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, a daily UV index of 5 turns into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ierissos, Greece
- Average high temperature in September: 23.9°C
The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is January (9.5°C).
- Average low temperature in September: 20.3°C
The month with the highest average low temperature is August (23.7°C).
The coldest month (with the lowest average low temperature) is January (6.4°C).
Average pressure in September
Ierissos, Greece
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is December (1019.3mbar).
The month with the lowest atmospheric pressure is July (1012.4mbar).
Average wind speed in September
Ierissos, Greece
- Average wind speed in September: 11.3km/h
The windiest month (with the highest average wind speed) is February (15.4km/h).
The calmest month (with the lowest average wind speed) is July (9.3km/h).
Average humidity in September
Ierissos, Greece
- Average humidity in September: 65%
The months with the highest relative humidity are January, February and November (74%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Ierissos, Greece
- Average rainfall in September: 42mm
The wettest months (with the highest rainfall) are November and December (44mm).
The driest month (with the least rainfall) is August (21mm).
Average rainfall days in September
Ierissos, Greece
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is August (9.3 days).
Average snowfall in September
Ierissos, Greece
- Average snowfall in September: 0mm
The month with the highest snowfall is January (29mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Ierissos, Greece
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Ierissos, Greece
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 54min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Ierissos, Greece
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in September
Ierissos, Greece
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Ierissos, Greece
- Average cloud cover in September: 20
The months with the most cloud cover are January and February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Ierissos, 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).
