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 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
With the beginning of September, the average high-temperature shows a decrease, transitioning from a refreshing 18°C (64.4°F) in August to a mild 13°C (55.4°F). An average temperature of 7.7°C (45.9°F) marks the nights in Kiiminki, Finland, in September.Humidity
The average relative humidity in September is 82%.Rainfall
April and September are months with the least rain in Kiiminki when the rain falls for 12.5 days and typically aggregates up to 25mm (0.98") of rain.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Kiiminki. Throughout September, in the average 0.2 snowfall days, it receives 2mm (0.08") of snow. Throughout the year, in Kiiminki, there are 107.1 snowfall days, and 1131mm (44.53") of snow is accumulated.Daylight
In September, the average length of the day in Kiiminki is 13h and 4min.On the first day of September, sunrise is at 05:57 and sunset at 20:36. On the last day of the month, sunrise is at 07:25 and sunset at 18:48 EEST.
Sunshine
In Kiiminki, the average sunshine in September is 6.7h.UV index
The average daily maximum UV index in September in Kiiminki is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 3 during September translates into these guidelines:
Undertake protective steps - Preventing sun damage is advised. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Kiiminki?
What is the average humidity in September in Kiiminki?
What is the driest month in Kiiminki?
How many days does it rain in September in Kiiminki?
When does it start to snow in Kiiminki?
What is the average length of the day in September in Kiiminki?
When is the sunrise / sunset in September in Kiiminki?
How many hours of sunshine does Kiiminki have in September?
What is the UV index intensity in September in Kiiminki?
Average temperature in September
Kiiminki, Finland
- Average high temperature in September: 13°C
The warmest month (with the highest average high temperature) is July (20°C).
The month with the lowest average high temperature is January (-6.1°C).
- Average low temperature in September: 7.7°C
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is January (-10.6°C).
Average pressure in September
Kiiminki, Finland
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is May (1014mbar).
The month with the lowest atmospheric pressure is December (1005.4mbar).
Average wind speed in September
Kiiminki, Finland
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is November (13.7km/h).
The calmest month (with the lowest average wind speed) is July (10.6km/h).
Average humidity in September
Kiiminki, Finland
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is June (69%).
Average rainfall in September
Kiiminki, Finland
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is July (59mm).
The driest months (with the least rainfall) are April and September (25mm).
Average rainfall days in September
Kiiminki, Finland
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Kiiminki, Finland
- Average snowfall in September: 2mm
The month with the highest snowfall is March (232mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Kiiminki, Finland
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (21.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Kiiminki, Finland
- Average daylight in September: 13h and 1min
The month with the longest days is June (Average daylight: 21h and 48min).
The month with the shortest days is December (Average daylight: 3h and 48min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 0min).
Average sunshine days in September
Kiiminki, Finland
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is June (17 days).
The month with the least sunshine days is December (7.4 days).
Average UV index in September
Kiiminki, Finland
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Kiiminki, Finland
- Average cloud cover in September: 55
The month with the most cloud cover is February (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 43).
Average visibility in September
Kiiminki, Finland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (6km).
