September weather forecastGrevena, Greece
September
Weather in September
As Grevena moves into September, the city observes a departure from the intense summer heat. The weather begins to cool, signaling the impending arrival of autumn. A decline in temperatures accompanies this change in season, allowing for more comfortable living conditions. Grevena graces the last month of the third quarter with a slightly increased amount of cloud cover, evident in the 25% average recorded. Nonetheless, the pleasant weather promotes outdoor activities, making it a popular month for local festivals and gatherings.Temperature
Grevena in September undergoes a mild reduction in the average high-temperature, shifting from August's warm 28.3°C (82.9°F) to a still moderately hot 23.2°C (73.8°F). In the month of September, Grevena's average low-temperature falls to a cool 11.9°C (53.4°F).Humidity
In Grevena, Greece, the average relative humidity in September is 65%.Rainfall
In September, in Grevena, the rain falls for 13.5 days. Throughout September, 46mm (1.81") of precipitation is accumulated. In Grevena, during the entire year, the rain falls for 154.9 days and collects up to 716mm (28.19") of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 07:02 and sunset at 20:05. On the last day of the month, sunrise is at 07:30 and sunset at 19:18 EEST.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. 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
Grevena, Greece
- Average high temperature in September: 23.2°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (5.2°C).
- Average low temperature in September: 11.9°C
The month with the highest average low temperature is August (14.9°C).
The coldest month (with the lowest average low temperature) is January (-1.5°C).
Average pressure in September
Grevena, Greece
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is December (1019mbar).
The month with the lowest atmospheric pressure is July (1012.6mbar).
Average wind speed in September
Grevena, Greece
- Average wind speed in September: 6.2km/h
The windiest months (with the highest average wind speed) are February and March (7.8km/h).
The calmest month (with the lowest average wind speed) is August (5.7km/h).
Average humidity in September
Grevena, Greece
- Average humidity in September: 65%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (56%).
Average rainfall in September
Grevena, Greece
- Average rainfall in September: 46mm
The wettest month (with the highest rainfall) is November (78mm).
The driest month (with the least rainfall) is August (39mm).
Average rainfall days in September
Grevena, Greece
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in September
Grevena, Greece
- Average snowfall in September: 0mm
The month with the highest snowfall is January (212mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Grevena, Greece
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grevena, 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 24min).
- Average sunshine in September: 9h and 6min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Grevena, Greece
- Average sunshine days in September: 14.7 days
The months with the most sunshine days are October and December (17.5 days).
The month with the least sunshine days is June (8.8 days).
Average UV index in September
Grevena, Greece
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Grevena, Greece
- Average cloud cover in September: 25
The months with the most cloud cover are January and February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Grevena, Greece
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The month with the lowest visibility is January (7km).
