September weather forecastErmioni, Greece
September
Weather in September
September, the first month of the autumn in Ermioni, is also a moderately hot month, with an average temperature varying between 21.2°C (70.2°F) and 26.3°C (79.3°F).Temperature
Ermioni experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from a moderately hot 29.7°C (85.5°F) in August to a still warm 26.3°C (79.3°F). Ermioni records an average low-temperature of 21.2°C (70.2°F) throughout the month of September.Humidity
The average relative humidity in September is 62%.Rainfall
In Ermioni, in September, it is raining for 8.4 days, with typically 20mm (0.79") of accumulated precipitation. Throughout the year, there are 95.8 rainfall days, and 262mm (10.31") of precipitation is accumulated.Snowfall
March through November are months without snowfall.Sea temperature
In Ermioni, the average seawater temperature in September is 25.4°C (77.7°F).Note: Between 25°C (77°F) and 29°C (84.2°F), water temperature is typically considered very warm and pleasurable by everyone. Water activities at these temperatures are enjoyable for extended periods without discomfort.
Daylight
In Ermioni, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 06:57 and sunset at 19:55. On the last day of September, sunrise is at 07:21 and sunset at 19:11 EEST.
Sunshine
The average sunshine in September in Ermioni is 9.8h.UV index
In September, the average daily maximum UV index in Ermioni is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 6 in September suggests the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Notice! The reflection of water and sand increases the UV radiation significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ermioni, Greece
- Average high temperature in September: 26.3°C
The warmest month (with the highest average high temperature) is August (29.7°C).
The month with the lowest average high temperature is January (12.6°C).
- Average low temperature in September: 21.2°C
The month with the highest average low temperature is August (24.2°C).
The coldest month (with the lowest average low temperature) is January (8.6°C).
Average pressure in September
Ermioni, Greece
- Average pressure in September: 1014.4mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1011.3mbar).
Average wind speed in September
Ermioni, Greece
- Average wind speed in September: 12km/h
The windiest month (with the highest average wind speed) is January (14.6km/h).
The calmest month (with the lowest average wind speed) is May (11.1km/h).
Average humidity in September
Ermioni, Greece
- Average humidity in September: 62%
The months with the highest relative humidity are January and February (72%).
The month with the lowest relative humidity is August (56%).
Average rainfall in September
Ermioni, Greece
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is December (36mm).
The driest months (with the least rainfall) are July and August (6mm).
Average rainfall days in September
Ermioni, Greece
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is January (10.8 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in September
Ermioni, Greece
- Average snowfall in September: 0mm
The month with the highest snowfall is January (5mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Ermioni, Greece
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Ermioni, Greece
- Average sea temperature in September: 25.4°C
The best month for swimming (with the highest average sea temperature) is August (26.5°C).
The coldest month (with the lowest average sea temperature) is February (15.3°C).
Average daylight in September /
Average sunshine in September
Ermioni, Greece
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 9h and 48min
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: 6h and 6min).
Average sunshine days in September
Ermioni, Greece
- Average sunshine days in September: 19.7 days
The month with the most sunshine days is July (27 days).
The month with the least sunshine days is January (16.5 days).
Average UV index in September
Ermioni, Greece
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Ermioni, Greece
- Average cloud cover in September: 15
The months with the most cloud cover are January and February (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in September
Ermioni, 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).
