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
September denotes a minimal variation in the average high-temperature to a still moderately hot 25.5°C (77.9°F) from August's 27.4°C (81.3°F). Hersonissos encounters an average temperature dip to a pleasant 22.1°C (71.8°F) throughout September, subtly lower than its daytime maximum.Humidity
In September, the average relative humidity is 68%.Rainfall
In September, in Hersonissos, the rain falls for 4 days. Throughout September, 7mm (0.28") of precipitation is accumulated. In Hersonissos, during the entire year, the rain falls for 99.2 days and collects up to 319mm (12.56") of precipitation.Sea temperature
In Hersonissos, the average seawater temperature in September is 24°C (75.2°F).Note: For someone not comfortable with cold, swimming in 24°C (75.2°F) waters might be a stretch. However, with favorable conditions like abundant sunshine, mild wind, and warm air temperatures, the experience can be improved. And while wetsuits are not a must, they can be considered.
Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 06:51 and sunset at 19:45. On the last day of the month, sunrise is at 07:12 and sunset at 19:03 EEST.
Sunshine
The average sunshine in September is 10.8h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 6 in September translates into these instructions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. 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. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Beware! Reflections from sand and water can intensify the Sun's UV radiation.
Frequently asked questions
What is the average September temperature in Hersonissos?
What is the average humidity in September in Hersonissos?
How many days does it rain in September in Hersonissos?
What is the sea temperature in September in Hersonissos?
How many hours of daylight does Hersonissos have in September?
When is the sunrise / sunset in September in Hersonissos?
How many hours of sunshine does Hersonissos have in September?
What is the UV index intensity in September in Hersonissos?
Average temperature in September
Hersonissos, Greece
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is January (14.1°C).
- Average low temperature in September: 22.1°C
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (11.1°C).
Average pressure in September
Hersonissos, Greece
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is December (1017.9mbar).
The month with the lowest atmospheric pressure is July (1009.4mbar).
Average wind speed in September
Hersonissos, Greece
- Average wind speed in September: 15.3km/h
The windiest month (with the highest average wind speed) is January (19.4km/h).
The calmest month (with the lowest average wind speed) is May (13km/h).
Average humidity in September
Hersonissos, Greece
- Average humidity in September: 68%
The months with the highest relative humidity are January, February and December (72%).
The month with the lowest relative humidity is July (67%).
Average rainfall in September
Hersonissos, Greece
- Average rainfall in September: 7mm
The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is August (1mm).
Average rainfall days in September
Hersonissos, Greece
- Average rainfall days in September: 4 days
The month with the highest number of rainy days is December (15.8 days).
The month with the least rainy days is August (0.6 days).
Average sea temperature in September
Hersonissos, Greece
- Average sea temperature in September: 24°C
The best month for swimming (with the highest average sea temperature) is August (25°C).
The coldest months (with the lowest average sea temperature) are February and March (15°C).
Average daylight in September /
Average sunshine in September
Hersonissos, Greece
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in September
Hersonissos, Greece
- Average sunshine days in September: 23.4 days
The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is January (12.4 days).
Average UV index in September
Hersonissos, 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, March and December (UV index 4).
Average cloud cover in September
Hersonissos, Greece
- Average cloud cover in September: 8
The month with the most cloud cover is January (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 2).
Average visibility in September
Hersonissos, 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).
Hersonissos, Greece
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