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
September
Weather in September
Temperature
Hersonissos's shift into September sets the average high-temperature at a still warm 25.5°C (77.9°F), a figure that deviates only slightly from August's 27.4°C (81.3°F). Hersonissos's nighttime temperature in September shows a minor descent, with a steady average of 22.1°C (71.8°F).Humidity
In Hersonissos, the average relative humidity in September is 68%.Rainfall
In September, in Hersonissos, the rain falls for 4 days. Throughout September, 7mm (0.28") of precipitation is accumulated. Throughout the year, there are 99.2 rainfall days, and 319mm (12.56") of precipitation is accumulated.Sea temperature
In Hersonissos, the average seawater temperature in September is 24°C (75.2°F).Note: Considering one's resistance to cold, elements like sunshine, wind, and the prevailing temperature matter when taking a swim in 24°C (75.2°F) waters. (For comparison, the Olympic swimming standard is set between 25°C (77°F) and 28°C (82.4°F).)
Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 06:51 and sunset at 19:45. On the last day of September, sunrise is at 07:12 and sunset at 19:03 EEST.
Sunshine
In Hersonissos, the average sunshine in September is 10.8h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 6 during September translates into the following directions:
Take precautions against overexposure. Protection against sun damage is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heads up! UV intensity is amplified by reflections from water and sand.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September in Hersonissos?
What is the sea temperature in September?
How many hours of daylight does Hersonissos have in September?
When is the sunrise / sunset in September in Hersonissos?
How long on average sun shines in September?
What is the UV index reading in September?
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).
