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
As August shifts into September, a slight alteration in temperatures is observed, with average highs reducing from an agreeable 21.5°C (70.7°F) to a comfortable 16.1°C (61°F). The average low-temperature in Retla during September nights is a chilly 7.9°C (46.2°F).Humidity
In September, the average relative humidity is 83%.Rainfall
In September, in Retla, the rain falls for 17.3 days. Throughout September, 37mm (1.46") of precipitation is accumulated. Throughout the year, in Retla, there are 168.2 rainfall days, and 528mm (20.79") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Retla.Daylight
In September, the average length of the day in Retla is 12h and 49min.On the first day of the month, sunrise is at 06:17 and sunset at 20:17. On the last day of September, sunrise is at 07:21 and sunset at 18:53 EEST.
Sunshine
The average sunshine in September is 6.9h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Retla in September?
What is the average humidity in September in Retla?
How many days does it rain in September in Retla?
When it does not snow in Retla?
Does it snow in Retla in September?
What is the average length of the day in September in Retla?
When is the sunrise / sunset in September in Retla?
How long on average sun shines in September in Retla?
What is the UV index intensity in September in Retla?
Average temperature in September
Retla, Estonia
- Average high temperature in September: 16.1°C
The warmest month (with the highest average high temperature) is July (22.9°C).
The month with the lowest average high temperature is January (-3°C).
- Average low temperature in September: 7.9°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-7.5°C).
Average pressure in September
Retla, Estonia
- Average pressure in September: 1014.3mbar
The month with the highest atmospheric pressure is May (1015.2mbar).
The month with the lowest atmospheric pressure is December (1009.9mbar).
Average wind speed in September
Retla, Estonia
- Average wind speed in September: 11.2km/h
The windiest month (with the highest average wind speed) is December (13.2km/h).
The calmest month (with the lowest average wind speed) is August (10.4km/h).
Average humidity in September
Retla, Estonia
- Average humidity in September: 83%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Retla, Estonia
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Retla, Estonia
- Average rainfall days in September: 17.3 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Retla, Estonia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (215mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Retla, Estonia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Retla, Estonia
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in September
Retla, Estonia
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is May (13.7 days).
The month with the least sunshine days is December (5.3 days).
Average UV index in September
Retla, 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
Retla, Estonia
- Average cloud cover in September: 57
The month with the most cloud cover is December (Cloud cover 81).
The month with the least cloud cover is May (Cloud cover 41).
Average visibility in September
Retla, Estonia
- 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 (6km).
