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
Nastola's progression into September involves a drop in the average high-temperature, receding from an agreeable 20.3°C (68.5°F) in August to a mild 14.8°C (58.6°F). Nastola observes an average nighttime low-temperature of 7.6°C (45.7°F) during the month of September.Humidity
The average relative humidity in September in Nastola is 83%.Rainfall
In September, the rain falls for 10.6 days. Throughout September, 27mm (1.06") of precipitation is accumulated. Throughout the year, there are 118.1 rainfall days, and 394mm (15.51") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. In Nastola, during the entire year, snow falls for 93.7 days and aggregates up to 918mm (36.14") of snow.Daylight
The average length of the day in September in Nastola is 12h and 54min.On the first day of September in Nastola, sunrise is at 06:10 and sunset at 20:22. On the last day of the month, sunrise is at 07:21 and sunset at 18:50 EEST.
Sunshine
In September, the average sunshine in Nastola, Finland, is 6.6h.UV index
In September, the average daily maximum UV index in Nastola, Finland, is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 3 in September transforms into this advice:
Take necessary precautions - Suggestions to elude sunburn are provided. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Nastola?
What is the average humidity in September in Nastola?
How much does it rain in Nastola in September?
When does it start snowing in Nastola?
What is the average length of the day in September in Nastola?
When is the sunrise / sunset in September in Nastola?
How long on average sun shines in September in Nastola?
What is the UV index reading in September in Nastola?
Average temperature in September
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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
Nastola, 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).
