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 arrival of September signals a subtle shift in temperature, down from an agreeable 21.4°C (70.5°F) in August to a comfortable 17.1°C (62.8°F). In Claro, the September nights cool down to an average low of 7.5°C (45.5°F).Humidity
The average relative humidity in September is 78%.Rainfall
In Claro, in September, it is raining for 12.2 days, with typically 32mm (1.26") of accumulated precipitation. In Claro, Switzerland, during the entire year, the rain falls for 137.8 days and collects up to 669mm (26.34") of precipitation.Snowfall
In Claro, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 06:44 and sunset at 20:02. On the last day of September, in Claro, sunrise is at 07:21 and sunset at 19:05 CEST.
Sunshine
In September, the average sunshine in Claro is 9.4h.UV index
In Claro, Switzerland, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Claro?
What is the average humidity in September in Claro?
How much does it rain in Claro in September?
When it does not snow in Claro?
What is the average length of the day in September in Claro?
When is the sunrise / sunset in September in Claro?
How long on average sun shines in September in Claro?
What is the UV index reading in September in Claro?
Average temperature in September
Claro, Switzerland
- Average high temperature in September: 17.1°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (1.6°C).
- Average low temperature in September: 7.5°C
The months with the highest average low temperature are July and August (11.1°C).
The coldest month (with the lowest average low temperature) is February (-5.1°C).
Average pressure in September
Claro, Switzerland
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is April (1015.1mbar).
Average wind speed in September
Claro, Switzerland
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is February (7.4km/h).
The calmest month (with the lowest average wind speed) is November (5.7km/h).
Average humidity in September
Claro, Switzerland
- Average humidity in September: 78%
The month with the highest relative humidity is November (83%).
The month with the lowest relative humidity is July (75%).
Average rainfall in September
Claro, Switzerland
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is November (118mm).
The driest month (with the least rainfall) is January (15mm).
Average rainfall days in September
Claro, Switzerland
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Claro, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Claro, Switzerland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Claro, Switzerland
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 30min).
Average sunshine days in September
Claro, Switzerland
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is January (23.7 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in September
Claro, Switzerland
- Average UV index in September: 4
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, October, November and December (UV index 2).
Average cloud cover in September
Claro, Switzerland
- Average cloud cover in September: 32
The month with the most cloud cover is November (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Claro, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August and December (9km).
The months with the lowest visibility are September, October and November (8km).
