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 snowfall in September
- Average snowfall 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
September signifies a gentle decline in Lillesand's average high-temperature, easing from a comfortable 18.3°C (64.9°F) in August to a still refreshing 15°C (59°F). September nights in Lillesand, Norway, witness a mild cool down to an average low of 10.9°C (51.6°F).Humidity
In September, the average relative humidity in Lillesand is 79%.Rainfall
In Lillesand, in September, during 14.8 rainfall days, 54mm (2.13") of precipitation is typically accumulated. In Lillesand, during the entire year, the rain falls for 152.2 days and collects up to 592mm (23.31") of precipitation.Snowfall
In Lillesand, snow does not fall in May through October.Sea temperature
In September, the average sea temperature is 15.8°C (60.4°F).Note: In water with a temperature of 15.8°C (60.4°F), most individuals do not find swimming enjoyable. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), breathing control becomes more difficult.
Daylight
In Lillesand, Norway, the average length of the day in September is 12h and 49min.On the first day of the month, sunrise is at 06:27 and sunset at 20:25. On the last day of September, sunrise is at 07:29 and sunset at 19:02 CEST.
Sunshine
The average sunshine in September is 7.8h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Lillesand?
What is the average humidity in September in Lillesand?
How much does it rain in Lillesand in September?
When it does not snow in Lillesand?
What is the sea temperature in September in Lillesand?
How many hours of daylight does Lillesand have in September?
When are sunrise and sunset in September in Lillesand?
How long on average sun shines in September in Lillesand?
What are the months with the highest UV index in Lillesand?
How high is the UV index in September in Lillesand?
Average temperature in September
Lillesand, Norway
- Average high temperature in September: 15°C
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is February (1.6°C).
- Average low temperature in September: 10.9°C
The months with the highest average low temperature are July and August (13.2°C).
The coldest month (with the lowest average low temperature) is February (-1.6°C).
Average pressure in September
Lillesand, Norway
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is April (1014.6mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in September
Lillesand, Norway
- Average wind speed in September: 18.5km/h
The windiest month (with the highest average wind speed) is November (21.5km/h).
The calmest month (with the lowest average wind speed) is June (16.1km/h).
Average humidity in September
Lillesand, Norway
- Average humidity in September: 79%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are May and June (71%).
Average rainfall in September
Lillesand, Norway
- Average rainfall in September: 54mm
The wettest months (with the highest rainfall) are October and November (65mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Lillesand, Norway
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is November (16.8 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in September
Lillesand, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is January (106mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Lillesand, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Lillesand, Norway
- Average sea temperature in September: 15.8°C
The best month for swimming (with the highest average sea temperature) is August (17.8°C).
The coldest month (with the lowest average sea temperature) is March (3.8°C).
Average daylight in September /
Average sunshine in September
Lillesand, Norway
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Lillesand, Norway
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is May (18.5 days).
The month with the least sunshine days is November (7.7 days).
Average UV index in September
Lillesand, Norway
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Lillesand, Norway
- Average cloud cover in September: 44
The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Lillesand, Norway
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
