September weather forecastGalissas, Greece
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Galissas, Greece, with an average temperature varying between 22.8°C (73°F) and 24.2°C (75.6°F).Temperature
Galissas sees the arrival of September with an average high-temperature of a still warm 24.2°C (75.6°F), indicating a subtle variation from August. Galissas records a consistent average nighttime temperature of 22.8°C (73°F) in September, slightly lower than the daytime high.Humidity
In September, the average relative humidity is 73%.Rainfall
In Galissas, in September, it is raining for 4.4 days, with typically 9mm (0.35") of accumulated precipitation. Throughout the year, there are 93 rainfall days, and 255mm (10.04") of precipitation is accumulated.Sea temperature
In Galissas, the average seawater temperature in September is 24.3°C (75.7°F).Note: Think about diving into 24.3°C (75.7°F) waters. Factors like your sensitivity to cold, the brightness of the sun, wind conditions, and the day's warmth play a role. For reference, Olympic swimming competitions use waters between 25°C (77°F) and 28°C (82.4°F).
Daylight
The average length of the day in September in Galissas is 12h and 25min.On the first day of September, sunrise is at 06:51 and sunset at 19:49. On the last day of the month, sunrise is at 07:15 and sunset at 19:05 EEST.
Sunshine
The average sunshine in September is 10.7h.UV index
In Galissas, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a daily UV index of 6 turns into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Watch out! Sand and water enhance the UV exposure you receive.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Galissas, Greece
- Average high temperature in September: 24.2°C
The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (13.8°C).
- Average low temperature in September: 22.8°C
The month with the highest average low temperature is August (24.4°C).
The coldest month (with the lowest average low temperature) is January (11.9°C).
Average pressure in September
Galissas, Greece
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is December (1017.8mbar).
The month with the lowest atmospheric pressure is July (1009.2mbar).
Average wind speed in September
Galissas, Greece
- Average wind speed in September: 24.3km/h
The windiest month (with the highest average wind speed) is January (30km/h).
The calmest month (with the lowest average wind speed) is May (18.8km/h).
Average humidity in September
Galissas, Greece
- Average humidity in September: 73%
The month with the highest relative humidity is August (76%).
The months with the lowest relative humidity are January and December (71%).
Average rainfall in September
Galissas, Greece
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is January (53mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in September
Galissas, Greece
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is January (14.9 days).
The month with the least rainy days is August (0.8 days).
Average sea temperature in September
Galissas, Greece
- Average sea temperature in September: 24.3°C
The best month for swimming (with the highest average sea temperature) is August (25.8°C).
The coldest month (with the lowest average sea temperature) is February (15.6°C).
Average daylight in September /
Average sunshine in September
Galissas, 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: 10h and 42min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in September
Galissas, Greece
- Average sunshine days in September: 24.2 days
The month with the most sunshine days is July (30.1 days).
The month with the least sunshine days is January (12.4 days).
Average UV index in September
Galissas, Greece
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Galissas, Greece
- Average cloud cover in September: 10
The month with the most cloud cover is January (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 3).
Average visibility in September
Galissas, 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).
