September weather forecastAcharavi, Greece

September

Weather in September

The first month of the autumn, September, is still a warm month in Acharavi, Greece, with temperature in the range of an average high of 25°C (77°F) and an average low of 21.4°C (70.5°F).

Temperature

The onset of September is marked by a minor decrease in temperature, transitioning from a moderately hot 28.5°C (83.3°F) in August to a still warm 25°C (77°F). Acharavi registers a small shift from peak daytime temperatures, with a consistent average low-temperature of 21.4°C (70.5°F) during September.

Humidity

The average relative humidity in September in Acharavi is 65%.

Rainfall

In September, in Acharavi, the rain falls for 10.7 days. Throughout September, 55mm (2.17") of precipitation is accumulated. Throughout the year, there are 147.4 rainfall days, and 888mm (34.96") of precipitation is accumulated.

Snowfall

In Acharavi, snow does not fall in February through December.

Sea temperature

In September, the average sea temperature is 24°C (75.2°F).
Note: Taking into account a person's sensitivity to the cold, given sunshine, wind, and air temperature, swimming in 24°C (75.2°F) might be pleasant. (FYI: The water temperature set for the Olympic swimming event is between 25°C (77°F) and 28°C (82.4°F).)

Daylight

In Acharavi, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 07:09 and sunset at 20:12. On the last day of September, sunrise is at 07:36 and sunset at 19:24 EEST.

Sunshine

In September, the average sunshine is 9.5h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during September leads to these instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.

Updated: Feb 14, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in September, in Acharavi, is 25°C (77°F), while the average low-temperature is 21.4°C (70.5°F). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 31°C (87.8°F).

The average relative humidity in September is 65%.

In September, in Acharavi, Greece, the rain falls for 10.7 days. Throughout September, 55mm (2.17") of precipitation is accumulated.

February through December are months without snowfall in Acharavi.

In September, the average sea temperature in Acharavi, Greece, is 24°C (75.2°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 24°C (75.2°F).

The average day length in September is 12h and 27min.

On the first day of September, sunrise is at 07:09 and sunset at 20:12. On the last day of the month, sunrise is at 07:36 and sunset at 19:24 EEST.

In September, the average sunshine duration is 9.5h.

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

28.5°C

25°C

21.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.3km/h

13.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

23.8

15.9

16.3

Average UV index

Average cloud cover

16%

23%

Average visibility

10km

Average temperature in September
Acharavi, Greece

Average high temperature in September: 25°C

The warmest month (with the highest average high temperature) is August (28.5°C).
The month with the lowest average high temperature is January (11.8°C).

Average low temperature in September: 21.4°C

The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is January (8.9°C).

Average pressure in September
Acharavi, Greece

Average pressure in September: 1014.9mbar

The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1012.2mbar).

Average wind speed in September
Acharavi, Greece

Average wind speed in September: 11.7km/h

The windiest month (with the highest average wind speed) is February (17.2km/h).
The calmest month (with the lowest average wind speed) is August (11.1km/h).

Average humidity in September
Acharavi, Greece

Average humidity in September: 65%

The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is August (63%).

Average rainfall in September
Acharavi, Greece

Average rainfall in September: 55mm

The wettest month (with the highest rainfall) is November (197mm).
The driest month (with the least rainfall) is August (9mm).

Average rainfall days in September
Acharavi, Greece

Average rainfall days in September: 10.7 days

The month with the highest number of rainy days is January (16.8 days).
The month with the least rainy days is August (3.9 days).

Average snowfall in September
Acharavi, Greece

Average snowfall in September: 0mm

The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in September
Acharavi, Greece

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average sea temperature in September
Acharavi, 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 (14°C).

Average daylight in September /
Average sunshine in September
Acharavi, Greece

Average daylight in September: 12h and 30min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

Average sunshine in September: 9h and 30min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

Average sunshine days in September
Acharavi, Greece

Average sunshine days in September: 15.9 days

The month with the most sunshine days is August (23.8 days).
The month with the least sunshine days is February (10.6 days).

Average UV index in September
Acharavi, 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 February and December (UV index 3).

Average cloud cover in September
Acharavi, Greece

Average cloud cover in September: 16

The month with the most cloud cover is January (Cloud cover 38).
The months with the least cloud cover are July and August (Cloud cover 8).

Average visibility in September
Acharavi, Greece

Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).