September weather forecastLappohja, Finland
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Lappohja, Finland, with an average temperature fluctuating between 12.5°C (54.5°F) and 14.9°C (58.8°F).Temperature
September witnesses a gentle descent in average high-temperature, descending from August's comfortable 18.3°C (64.9°F) to a moderate 14.9°C (58.8°F). Nighttime temperature in Lappohja sees a small decrement from daytime highs, dipping to an average of 12.5°C (54.5°F) during September.Humidity
The average relative humidity in September in Lappohja is 78%.Rainfall
In Lappohja, Finland, in September, during 15.6 rainfall days, 40mm (1.57") of precipitation is typically accumulated. Throughout the year, in Lappohja, there are 146.1 rainfall days, and 353mm (13.9") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Lappohja is 12h and 52min.On the first day of September, sunrise is at 06:23 and sunset at 20:30. On the last day of the month, sunrise is at 07:31 and sunset at 19:02 EEST.
Sunshine
The average sunshine in September in Lappohja is 7.8h.UV index
In Lappohja, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the UV index of 4 transforms into the following advice:
Prioritize safety - Recommendations to avert sunburn are shared. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lappohja, Finland
- Average high temperature in September: 14.9°C
The warmest month (with the highest average high temperature) is August (18.3°C).
The month with the lowest average high temperature is February (-0.4°C).
- Average low temperature in September: 12.5°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (-3.2°C).
Average pressure in September
Lappohja, Finland
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1008.2mbar).
Average wind speed in September
Lappohja, Finland
- Average wind speed in September: 24.4km/h
The windiest month (with the highest average wind speed) is December (31.4km/h).
The calmest month (with the lowest average wind speed) is May (18.8km/h).
Average humidity in September
Lappohja, Finland
- Average humidity in September: 78%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Lappohja, Finland
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is August (46mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Lappohja, Finland
- Average rainfall days in September: 15.6 days
The month with the highest number of rainy days is August (16.7 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in September
Lappohja, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (48mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Lappohja, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lappohja, Finland
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in September
Lappohja, Finland
- Average sunshine days in September: 11.4 days
The month with the most sunshine days is May (18.1 days).
The month with the least sunshine days is December (7.2 days).
Average UV index in September
Lappohja, Finland
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in September
Lappohja, Finland
- Average cloud cover in September: 43
The month with the most cloud cover is December (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Lappohja, Finland
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
