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 onset of September, Hollola's average high-temperature adjusts, receding from August's agreeable 20.3°C (68.5°F) to a moderate 14.8°C (58.6°F). During September, the temperature in Hollola is averaged to a low of 7.6°C (45.7°F) at night.Humidity
In September, the average relative humidity is 83%.Rainfall
In Hollola, in September, during 10.6 rainfall days, 27mm (1.06") of precipitation is typically accumulated. In Hollola, Finland, during the entire year, the rain falls for 118.1 days and collects up to 394mm (15.51") of precipitation.Snowfall
Months with snowfall in Hollola, Finland, are January through May, September through December. September is the first month it typically snows in Hollola, Finland. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, in Hollola, there are 93.7 snowfall days, and 918mm (36.14") of snow is accumulated.Daylight
In September, the average length of the day is 12h and 54min.On the first day of September in Hollola, sunrise is at 06:11 and sunset at 20:23. On the last day of the month, sunrise is at 07:22 and sunset at 18:52 EEST.
Sunshine
The average sunshine in September in Hollola is 6.6h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hollola in September?
What is the average humidity in September in Hollola?
How much does it rain in Hollola in September?
When does it start snowing in Hollola?
How many hours of daylight does Hollola have in September?
When are sunrise and sunset in September in Hollola?
How many hours of sunshine does Hollola have in September?
What is the UV index intensity in September in Hollola?
Average temperature in September
Hollola, Finland
- Average high temperature in September: 14.8°C
The warmest month (with the highest average high temperature) is July (22°C).
The month with the lowest average high temperature is January (-4.5°C).
- Average low temperature in September: 7.6°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 (-8.9°C).
Average pressure in September
Hollola, Finland
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008.4mbar).
Average wind speed in September
Hollola, Finland
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is December (12km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in September
Hollola, Finland
- Average humidity in September: 83%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall in September
Hollola, Finland
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is July (46mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in September
Hollola, Finland
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Hollola, Finland
- Average snowfall in September: 1mm
The month with the highest snowfall is January (196mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Hollola, Finland
- Average snowfall days in September: 0.1 days
The months with the highest number of snowfall days are January and December (18.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Hollola, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 6min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The months with the least sunshine are January and December (Average sunshine: 1h and 30min).
Average sunshine days in September
Hollola, Finland
- Average sunshine days in September: 17.1 days
The months with the most sunshine days are May and August (17.6 days).
The month with the least sunshine days is December (8.4 days).
Average UV index in September
Hollola, 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
Hollola, Finland
- Average cloud cover in September: 57
The months with the most cloud cover are January and February (Cloud cover 81).
The month with the least cloud cover is August (Cloud cover 44).
Average visibility in September
Hollola, Finland
- Average visibility in September: 8km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (5km).
