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 move into September indicates a reduction in the average high-temperature, down from August's pleasant 20.8°C (69.4°F) to a mild 15.6°C (60.1°F). Merja's nighttime temperature during September is consistently averaged at a frosty 8.5°C (47.3°F).Humidity
In September, the average relative humidity in Merja is 83%.Rainfall
In Merja, in September, during 16.8 rainfall days, 36mm (1.42") of precipitation is typically accumulated. In Merja, during the entire year, the rain falls for 149.2 days and collects up to 459mm (18.07") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Merja, Estonia, is 12h and 50min.On the first day of September in Merja, sunrise is at 06:15 and sunset at 20:16. On the last day of the month, sunrise is at 07:19 and sunset at 18:52 EEST.
Sunshine
The average sunshine in September in Merja is 6.9h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Merja in September?
What is the average humidity in September in Merja?
How many days does it rain in September in Merja?
When it does not snow in Merja?
Does it snow in Merja in September?
What is the average length of the day in September in Merja?
What time are sunrise and sunset in September in Merja?
How many hours of sunshine does Merja have in September?
How high is the UV index in September in Merja?
Average temperature in September
Merja, Estonia
- Average high temperature in September: 15.6°C
The warmest month (with the highest average high temperature) is July (22.3°C).
The month with the lowest average high temperature is January (-3.3°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).
Average pressure in September
Merja, Estonia
- Average pressure in September: 1014.1mbar
The month with the highest atmospheric pressure is May (1015.1mbar).
The month with the lowest atmospheric pressure is December (1009.8mbar).
Average wind speed in September
Merja, Estonia
- Average wind speed in September: 11.9km/h
The windiest month (with the highest average wind speed) is December (14.1km/h).
The calmest month (with the lowest average wind speed) is May (10.6km/h).
Average humidity in September
Merja, 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
Merja, Estonia
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is July (55mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Merja, Estonia
- Average rainfall days in September: 16.8 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Merja, Estonia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (179mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Merja, Estonia
- Average snowfall days in September: 0.2 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 and August (0 days).
Average daylight in September /
Average sunshine in September
Merja, 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 54min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Merja, Estonia
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is May (15.4 days).
The month with the least sunshine days is December (9 days).
Average UV index in September
Merja, 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
Merja, Estonia
- Average cloud cover in September: 54
The month with the most cloud cover is December (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in September
Merja, Estonia
- 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 (6km).
