September weather forecastOia, Greece
September
Weather in September
The first month of the autumn, September, is still a warm month in Oia, Greece, with an average temperature ranging between min 23.3°C (73.9°F) and max 24.5°C (76.1°F).Temperature
Oia records a slight change with September's average high-temperatures adjusting to a still warm 24.5°C (76.1°F) from August's 25.9°C (78.6°F). Nights in September in Oia, Greece, exhibit a minor reduction to an average low temperature of 23.3°C (73.9°F).Humidity
The average relative humidity in September is 73%.Rainfall
In Oia, in September, it is raining for 4.5 days, with typically 8mm (0.31") of accumulated precipitation. In Oia, during the entire year, the rain falls for 87.8 days and collects up to 221mm (8.7") of precipitation.Sea temperature
In Oia, the average seawater temperature in September is 23°C (73.4°F).Note: For someone not comfortable with cold, swimming in 23°C (73.4°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 Oia, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 06:50 and sunset at 19:46. On the last day of the month, sunrise is at 07:13 and sunset at 19:03 EEST.
Sunshine
In Oia, the average sunshine in September is 10.8h.UV index
The average daily maximum UV index in September in Oia is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Caution! Sand and water surfaces escalate the UV intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Oia, Greece
- Average high temperature in September: 24.5°C
The warmest month (with the highest average high temperature) is August (25.9°C).
The month with the lowest average high temperature is January (14.7°C).
- Average low temperature in September: 23.3°C
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (12.9°C).
Average pressure in September
Oia, Greece
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is December (1017.7mbar).
The month with the lowest atmospheric pressure is July (1009mbar).
Average wind speed in September
Oia, Greece
- Average wind speed in September: 21.9km/h
The windiest month (with the highest average wind speed) is January (29.2km/h).
The calmest month (with the lowest average wind speed) is May (19.8km/h).
Average humidity in September
Oia, Greece
- Average humidity in September: 73%
The month with the highest relative humidity is August (77%).
The months with the lowest relative humidity are January and December (70%).
Average rainfall in September
Oia, Greece
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is February (38mm).
The driest months (with the least rainfall) are July and August (2mm).
Average rainfall days in September
Oia, Greece
- Average rainfall days in September: 4.5 days
The month with the highest number of rainy days is January (14.2 days).
The month with the least rainy days is August (0.4 days).
Average sea temperature in September
Oia, 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 February and March (15°C).
Average daylight in September /
Average sunshine in September
Oia, Greece
- Average daylight in September: 12h and 24min
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: 10h and 48min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in September
Oia, Greece
- Average sunshine days in September: 23.5 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is January (13.3 days).
Average UV index in September
Oia, Greece
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Oia, Greece
- Average cloud cover in September: 9
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 2).
Average visibility in September
Oia, 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).
