September weather forecastVartholomio, Greece
September
Weather in September
September, the first month of the autumn in Vartholomio, is still a warm month, with an average temperature fluctuating between 27.2°C (81°F) and 21.3°C (70.3°F).Temperature
The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a hot 30.9°C (87.6°F) in August to a moderately hot 27.2°C (81°F). The low-temperature average for Vartholomio during September stands at an agreeable 21.3°C (70.3°F).Heat index
The heat index value during September is evaluated at 29°C (84.2°F). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Heat index determinations are made taking into account the shade and light air movements. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
The average relative humidity in September in Vartholomio, Greece, is 64%.Rainfall
In Vartholomio, Greece, in September, during 9.8 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Vartholomio, during the entire year, the rain falls for 131 days and collects up to 627mm (24.69") of precipitation.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 07:05 and sunset at 20:04. On the last day of September, in Vartholomio, sunrise is at 07:30 and sunset at 19:19 EEST.
Sunshine
In September, the average sunshine in Vartholomio is 9.7h.UV index
In Vartholomio, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 6 in September leads to these guidelines:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Vartholomio, Greece
- Average high temperature in September: 27.2°C
The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is January (13.2°C).
- Average low temperature in September: 21.3°C
The month with the highest average low temperature is August (23.9°C).
The coldest month (with the lowest average low temperature) is January (9.2°C).
Average pressure in September
Vartholomio, Greece
- Average pressure in September: 1014.8mbar
The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is July (1011.9mbar).
Average wind speed in September
Vartholomio, Greece
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is January (15.2km/h).
The calmest months (with the lowest average wind speed) are May and June (10.7km/h).
Average humidity in September
Vartholomio, Greece
- Average humidity in September: 64%
The months with the highest relative humidity are January and February (72%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Vartholomio, Greece
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is January (117mm).
The driest month (with the least rainfall) is August (3mm).
Average rainfall days in September
Vartholomio, Greece
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is January (17.1 days).
The month with the least rainy days is August (2.3 days).
Average daylight in September /
Average sunshine in September
Vartholomio, 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 42min
The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Vartholomio, Greece
- Average sunshine days in September: 17.2 days
The months with the most sunshine days are July and August (27.2 days).
The month with the least sunshine days is February (11.4 days).
Average UV index in September
Vartholomio, Greece
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Vartholomio, Greece
- Average cloud cover in September: 13
The month with the most cloud cover is January (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Vartholomio, 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).
