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
September is characterized by a mild reduction in the average high-temperature, from an agreeable 21.3°C (70.3°F) in August to a comfortable 16.5°C (61.7°F). The temperature in Piisu lowers to an average of 9.4°C (48.9°F) during September nights.Humidity
The average relative humidity in September is 81%.Rainfall
In Piisu, during September, the rain falls for 17.4 days and regularly aggregates up to 49mm (1.93") of precipitation. Throughout the year, there are 175.8 rainfall days, and 570mm (22.44") of precipitation is accumulated.Snowfall
In Piisu, snow does not fall in June through September.Daylight
In September, the average length of the day in Piisu is 12h and 49min.On the first day of the month, sunrise is at 06:23 and sunset at 20:23. On the last day of September, in Piisu, sunrise is at 07:27 and sunset at 18:59 EEST.
Sunshine
In September, the average sunshine in Piisu, Estonia, is 7.4h.UV index
The average daily maximum UV index in September in Piisu is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Around midday, solar radiation is most harmful; hence, exposure should be limited. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Piisu in September?
What is the average humidity in September in Piisu?
How many days does it rain in September in Piisu?
When it does not snow in Piisu?
Does it snow in Piisu in September?
What is the average length of the day in September in Piisu?
When is the sunrise / sunset in September in Piisu?
How long on average sun shines in September in Piisu?
What is the UV index reading in September in Piisu?
Average temperature in September
Piisu, Estonia
- Average high temperature in September: 16.5°C
The warmest month (with the highest average high temperature) is July (22.5°C).
The month with the lowest average high temperature is January (-2.1°C).
- Average low temperature in September: 9.4°C
The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-6.3°C).
Average pressure in September
Piisu, Estonia
- Average pressure in September: 1014.4mbar
The month with the highest atmospheric pressure is May (1015.3mbar).
The month with the lowest atmospheric pressure is December (1009.9mbar).
Average wind speed in September
Piisu, Estonia
- Average wind speed in September: 13.1km/h
The windiest month (with the highest average wind speed) is December (16km/h).
The calmest month (with the lowest average wind speed) is May (11.7km/h).
Average humidity in September
Piisu, Estonia
- Average humidity in September: 81%
The month with the highest relative humidity is February (93%).
The months with the lowest relative humidity are May and June (72%).
Average rainfall in September
Piisu, Estonia
- Average rainfall in September: 49mm
The wettest month (with the highest rainfall) is August (59mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Piisu, Estonia
- Average rainfall days in September: 17.4 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is February (7.6 days).
Average snowfall in September
Piisu, Estonia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (192mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Piisu, Estonia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Piisu, Estonia
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 24min).
- Average sunshine in September: 7h and 2min
The months with the most sunshine are June and July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average sunshine days in September
Piisu, Estonia
- Average sunshine days in September: 10 days
The month with the most sunshine days is May (13.8 days).
The month with the least sunshine days is December (4 days).
Average UV index in September
Piisu, Estonia
- Average UV index in September: 3
The months with the highest UV index are June and 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
Piisu, Estonia
- Average cloud cover in September: 49
The month with the most cloud cover is December (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in September
Piisu, Estonia
- Average visibility in September: 9km
The months with the highest visibility are May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February and March (7km).
