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
Weather in September
Temperature
During the shift to September, Harju-Risti records a mild decrease in average high-temperature, moving from a comfortable 19.7°C (67.5°F) in August to a still refreshing 15.5°C (59.9°F). Harju-Risti records a negligible downturn from daytime temperatures, averaging a low of 12°C (53.6°F) in the month of September.Humidity
The average relative humidity in September is 79%.Rainfall
In Harju-Risti, in September, it is raining for 18.5 days, with typically 59mm (2.32") of accumulated precipitation. Throughout the year, there are 159.9 rainfall days, and 528mm (20.79") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Harju-Risti.Daylight
In Harju-Risti, the average length of the day in September is 12h and 50min.On the first day of the month, sunrise is at 06:22 and sunset at 20:25. On the last day of September, sunrise is at 07:27 and sunset at 18:59 EEST.
Sunshine
In September, the average sunshine is 7.5h.UV index
In Harju-Risti, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Take necessary precautions - Defending against sun damage is advocated. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are September temperatures in Harju-Risti?
What is the average humidity in September in Harju-Risti?
How many days does it rain in September in Harju-Risti?
When it does not snow in Harju-Risti?
Does it snow in Harju-Risti in September?
How many hours of daylight does Harju-Risti have in September?
When are sunrise and sunset in September in Harju-Risti?
How long on average sun shines in September in Harju-Risti?
What is the UV index reading in September in Harju-Risti?
Average temperature in September
Harju-Risti, Estonia
- Average high temperature in September: 15.5°C
The warmest month (with the highest average high temperature) is July (19.8°C).
The month with the lowest average high temperature is January (-1.2°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is February (-4.1°C).
Average pressure in September
Harju-Risti, Estonia
- Average pressure in September: 1013.8mbar
The month with the highest atmospheric pressure is May (1015.1mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Harju-Risti, Estonia
- Average wind speed in September: 19.5km/h
The windiest month (with the highest average wind speed) is December (24km/h).
The calmest month (with the lowest average wind speed) is May (15.2km/h).
Average humidity in September
Harju-Risti, Estonia
- Average humidity in September: 79%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May and August (75%).
Average rainfall in September
Harju-Risti, Estonia
- Average rainfall in September: 59mm
The wettest month (with the highest rainfall) is August (67mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Harju-Risti, Estonia
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Harju-Risti, Estonia
- Average snowfall in September: 0mm
The month with the highest snowfall is January (91mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Harju-Risti, Estonia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Harju-Risti, Estonia
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in September
Harju-Risti, Estonia
- Average sunshine days in September: 8.3 days
The month with the most sunshine days is May (16.6 days).
The month with the least sunshine days is December (6.9 days).
Average UV index in September
Harju-Risti, Estonia
- Average UV index in September: 3
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in September
Harju-Risti, Estonia
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Harju-Risti, Estonia
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, October, November and December (9km).
Harju-Risti, Estonia
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