September weather forecastKoločep, Croatia
September
Weather in September
September, the first month of the autumn in Koločep, is still a warm month, with an average temperature ranging between min 18.2°C (64.8°F) and max 23.4°C (74.1°F).Temperature
September brings a slight decrease in the average high-temperature, shifting from 27.9°C (82.2°F) in August to a still moderately hot 23.4°C (74.1°F). September nights observe an average temperature dip to a refreshing 18.2°C (64.8°F).Humidity
In September, the average relative humidity is 64%.Rainfall
In Koločep, during September, the rain falls for 9.9 days and regularly aggregates up to 54mm (2.13") of precipitation. Throughout the year, there are 134.6 rainfall days, and 827mm (32.56") of precipitation is accumulated.Snowfall
In Koločep, Croatia, snow does not fall in January, March through December.Sea temperature
In September, the average sea temperature in Koločep, Croatia, is 24.3°C (75.7°F).Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.3°C (75.7°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)
Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 06:13 and sunset at 19:22. On the last day of September, sunrise is at 06:44 and sunset at 18:31 CEST.
Sunshine
The average sunshine in September is 10.4h.UV index
The average daily maximum UV index in September in Koločep is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Take precautions - Protection against sunburn is recommended. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Warning! Sand and water reflections boost the intensity of UV exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Koločep, Croatia
- Average high temperature in September: 23.4°C
The warmest month (with the highest average high temperature) is August (27.9°C).
The month with the lowest average high temperature is January (9.4°C).
- Average low temperature in September: 18.2°C
The month with the highest average low temperature is August (21.8°C).
The coldest month (with the lowest average low temperature) is January (5.8°C).
Average pressure in September
Koločep, Croatia
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is July (1013.9mbar).
Average wind speed in September
Koločep, Croatia
- Average wind speed in September: 12km/h
The windiest month (with the highest average wind speed) is February (16.8km/h).
The calmest month (with the lowest average wind speed) is August (10.5km/h).
Average humidity in September
Koločep, Croatia
- Average humidity in September: 64%
The month with the highest relative humidity is February (73%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Koločep, Croatia
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is November (165mm).
The driest month (with the least rainfall) is July (22mm).
Average rainfall days in September
Koločep, Croatia
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is August (5.4 days).
Average snowfall in September
Koločep, Croatia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (3mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Koločep, Croatia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in September
Koločep, Croatia
- Average sea temperature in September: 24.3°C
The best month for swimming (with the highest average sea temperature) is July (25.5°C).
The coldest months (with the lowest average sea temperature) are January and February (14.2°C).
Average daylight in September /
Average sunshine in September
Koločep, Croatia
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 10h and 24min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in September
Koločep, Croatia
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is August (21.4 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in September
Koločep, Croatia
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Koločep, Croatia
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Koločep, Croatia
- 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).
