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
September reveals a small adjustment in temperature, transitioning from an average high of an agreeable 22.5°C (72.5°F) in August to a refreshing 17.9°C (64.2°F). September nights in Jona observe an average temperature dip to a chilly 7.4°C (45.3°F).Humidity
In September, the average relative humidity is 82%.Rainfall
In September, in Jona, the rain falls for 12.7 days. Throughout September, 35mm (1.38") of precipitation is accumulated. Throughout the year, in Jona, there are 151 rainfall days, and 623mm (24.53") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Jona.Daylight
In Jona, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 06:44 and sunset at 20:04. On the last day of September, in Jona, sunrise is at 07:22 and sunset at 19:06 CEST.
Sunshine
The average sunshine in September in Jona is 8.7h.UV index
In Jona, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Jona?
What is the average humidity in September in Jona?
How many days does it rain in September in Jona?
When it does not snow in Jona?
Does it snow in Jona in September?
How many hours of daylight does Jona have in September?
When is the sunrise / sunset in September in Jona?
How many hours of sunshine does Jona have in September?
What is the UV index intensity in September in Jona?
Average temperature in September
Jona, Switzerland
- Average high temperature in September: 17.9°C
The warmest months (with the highest average high temperature) are July and August (22.5°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in September: 7.4°C
The month with the highest average low temperature is August (11.1°C).
The coldest months (with the lowest average low temperature) are January and February (-4.3°C).
Average pressure in September
Jona, Switzerland
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Jona, Switzerland
- Average wind speed in September: 6.1km/h
The windiest month (with the highest average wind speed) is March (8km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).
Average humidity in September
Jona, Switzerland
- Average humidity in September: 82%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is July (78%).
Average rainfall in September
Jona, Switzerland
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is May (82mm).
The driest month (with the least rainfall) is November (31mm).
Average rainfall days in September
Jona, Switzerland
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in September
Jona, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (202mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Jona, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jona, Switzerland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Jona, Switzerland
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Jona, Switzerland
- 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 November and December (UV index 1).
Average cloud cover in September
Jona, Switzerland
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Jona, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January and February (7km).
Jona, Switzerland
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