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
The shift from August to September involves a decrease in the average high-temperature, dropping from an agreeable 20.7°C (69.3°F) to a mild 14.8°C (58.6°F). Kalvola in September experiences a low-temperature average of 7.5°C (45.5°F).Humidity
The average relative humidity in September in Kalvola is 83%.Rainfall
In Kalvola, in September, it is raining for 13.8 days, with typically 31mm (1.22") of accumulated precipitation. Throughout the year, in Kalvola, there are 128.9 rainfall days, and 399mm (15.71") of precipitation is accumulated.Snowfall
In Kalvola, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 54min.On the first day of September in Kalvola, sunrise is at 06:16 and sunset at 20:29. On the last day of the month, sunrise is at 07:28 and sunset at 18:58 EEST.
Sunshine
In September, the average sunshine in Kalvola, Finland, is 6.4h.UV index
In September, the average daily maximum UV index in Kalvola is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Kalvola in September?
What is the average humidity in September in Kalvola?
How many days does it rain in September in Kalvola?
When it does not snow in Kalvola?
Does it snow in Kalvola in September?
What is the average length of the day in September in Kalvola?
When are sunrise and sunset in September in Kalvola?
How many hours of sunshine does Kalvola have in September?
What is the UV index intensity in September in Kalvola?
Average temperature in September
Kalvola, Finland
- Average high temperature in September: 14.8°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is January (-8.5°C).
Average pressure in September
Kalvola, Finland
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Kalvola, Finland
- Average wind speed in September: 10.3km/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 (9.6km/h).
Average humidity in September
Kalvola, 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 (66%).
Average rainfall in September
Kalvola, Finland
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is July (54mm).
The driest months (with the least rainfall) are March and April (25mm).
Average rainfall days in September
Kalvola, Finland
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Kalvola, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (157mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Kalvola, Finland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Kalvola, 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 2min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Kalvola, Finland
- Average sunshine days in September: 11.8 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is March (9.4 days).
Average UV index in September
Kalvola, 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
Kalvola, Finland
- Average cloud cover in September: 59
The months with the most cloud cover are January and February (Cloud cover 80).
The months with the least cloud cover are May, June, July and August (Cloud cover 47).
Average visibility in September
Kalvola, Finland
- Average visibility in September: 8km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
