Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift from August to September is characterized by an average high-temperature of a still moderately hot 24.9°C (76.8°F), not significantly different from the 26.8°C (80.2°F) of August. The nights of September in Kefalos, Greece, cool down to an average low of 23.4°C (74.1°F), subtly lower than daytime highs.Humidity
In September, the average relative humidity is 71%.Rainfall
In Kefalos, in September, it is raining for 4.1 days, with typically 16mm (0.63") of accumulated precipitation. Throughout the year, there are 94.2 rainfall days, and 485mm (19.09") of precipitation is accumulated.Sea temperature
In September, the average sea temperature in Kefalos is 23°C (73.4°F).Note: Individual preferences to cold, influenced by conditions such as sunshine, wind, and surrounding temperature, play a part in the comfort of swimming in 23°C (73.4°F) waters. (As an aside, Olympic swimming standards dictate water temperatures from 25°C (77°F) to 28°C (82.4°F).)
Daylight
In Kefalos, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 06:43 and sunset at 19:40. On the last day of the month, sunrise is at 07:06 and sunset at 18:57 EEST.
Sunshine
In Kefalos, the average sunshine in September is 11.3h.UV index
In Kefalos, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Warning! The Sun's UV rays intensify with reflections from sand and water.
Frequently asked questions
What is the temperature in September in Kefalos?
What is the average humidity in September in Kefalos?
How much does it rain in Kefalos in September?
What is the sea temperature in September in Kefalos?
What is the average length of the day in September in Kefalos?
When are sunrise and sunset in September in Kefalos?
How many hours of sunshine does Kefalos have in September?
How high is the UV index in September in Kefalos?
Average temperature in September
Kefalos, Greece
- Average high temperature in September: 24.9°C
The warmest month (with the highest average high temperature) is August (26.8°C).
The month with the lowest average high temperature is January (14.5°C).
- Average low temperature in September: 23.4°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (12.4°C).
Average pressure in September
Kefalos, Greece
- Average pressure in September: 1011.9mbar
The month with the highest atmospheric pressure is December (1017.5mbar).
The month with the lowest atmospheric pressure is July (1007.6mbar).
Average wind speed in September
Kefalos, Greece
- Average wind speed in September: 22.9km/h
The windiest month (with the highest average wind speed) is January (28.8km/h).
The calmest month (with the lowest average wind speed) is May (18.1km/h).
Average humidity in September
Kefalos, Greece
- Average humidity in September: 71%
The month with the highest relative humidity is June (74%).
The months with the lowest relative humidity are January, November and December (68%).
Average rainfall in September
Kefalos, Greece
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is December (106mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in September
Kefalos, Greece
- Average rainfall days in September: 4.1 days
The month with the highest number of rainy days is January (15.3 days).
The month with the least rainy days is August (0.4 days).
Average sea temperature in September
Kefalos, Greece
- Average sea temperature in September: 23°C
The best month for swimming (with the highest average sea temperature) is August (24°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (16°C).
Average daylight in September /
Average sunshine in September
Kefalos, Greece
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in September
Kefalos, Greece
- Average sunshine days in September: 25.2 days
The month with the most sunshine days is August (29.9 days).
The month with the least sunshine days is February (13.7 days).
Average UV index in September
Kefalos, Greece
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).
Average cloud cover in September
Kefalos, Greece
- Average cloud cover in September: 7
The month with the most cloud cover is January (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 2).
Average visibility in September
Kefalos, 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).
Kefalos, Greece
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