September weather forecastPortaria, Greece
September
Weather in September
September, the first month of the autumn in Portaria, is still a warm month, with temperature in the range of an average low of 18.5°C (65.3°F) and an average high of 24.9°C (76.8°F).Temperature
A mild drop in Portaria's average high-temperature is observed in September, transitioning from a moderately hot 28.9°C (84°F) in August to a still warm 24.9°C (76.8°F). Throughout the month of September, the nighttime temperature in Portaria dips to an average of 18.5°C (65.3°F).Humidity
In Portaria, the average relative humidity in September is 63%.Rainfall
In September, the rain falls for 10.5 days. Throughout September, 42mm (1.65") of precipitation is accumulated. Throughout the year, in Portaria, Greece, there are 144.7 rainfall days, and 674mm (26.54") of precipitation is accumulated.Snowfall
April through November are months without snowfall in Portaria.Daylight
The average length of the day in September in Portaria is 12h and 27min.On the first day of September, sunrise is at 06:56 and sunset at 19:58. On the last day of the month, sunrise is at 07:23 and sunset at 19:12 EEST.
Sunshine
In Portaria, the average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index in Portaria is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Take precautions - Protection against sun damage is advised. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Portaria, Greece
- Average high temperature in September: 24.9°C
The warmest month (with the highest average high temperature) is July (29.1°C).
The month with the lowest average high temperature is January (9.5°C).
- Average low temperature in September: 18.5°C
The month with the highest average low temperature is August (21.9°C).
The coldest month (with the lowest average low temperature) is January (4.9°C).
Average pressure in September
Portaria, Greece
- Average pressure in September: 1015.3mbar
The month with the highest atmospheric pressure is December (1018.9mbar).
The month with the lowest atmospheric pressure is July (1012.2mbar).
Average wind speed in September
Portaria, Greece
- Average wind speed in September: 9.3km/h
The windiest month (with the highest average wind speed) is February (12.3km/h).
The calmest months (with the lowest average wind speed) are June and July (8.7km/h).
Average humidity in September
Portaria, Greece
- Average humidity in September: 63%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (56%).
Average rainfall in September
Portaria, Greece
- Average rainfall in September: 42mm
The wettest month (with the highest rainfall) is March (92mm).
The driest month (with the least rainfall) is August (23mm).
Average rainfall days in September
Portaria, Greece
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is January (16.3 days).
The month with the least rainy days is August (6.8 days).
Average snowfall in September
Portaria, Greece
- Average snowfall in September: 0mm
The month with the highest snowfall is January (55mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Portaria, Greece
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2 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
Portaria, Greece
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Portaria, Greece
- Average sunshine days in September: 18 days
The months with the most sunshine days are July and August (22.3 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in September
Portaria, 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
Portaria, Greece
- Average cloud cover in September: 23
The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Portaria, Greece
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
