Climate and monthly weather forecastIllnau, Switzerland
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Illnau, Switzerland, with an average temperature varying between -3.3°C (26.1°F) and 3.3°C (37.9°F). January is the month when Illnau experiences its coldest temperatures, averaging a high of 3.3°C (37.9°F) and a low of -3.3°C (26.1°F). Weather in January »Weather in February
February, the last month of the winter in Illnau, is another cold month, with an average temperature fluctuating between 4.4°C (39.9°F) and -3.1°C (26.4°F). During February, the average high-temperature is a still cold 4.4°C (39.9°F), maintaining a close resemblance to that of the preceding month. Weather in February »Weather in March
March, the first month of the spring in Illnau, is a chilly month, with an average temperature fluctuating between 0°C (32°F) and 9.6°C (49.3°F). Illnau sees an increase in average high-temperatures during March, moving from a cold 4.4°C (39.9°F) in February to a frosty 9.6°C (49.3°F). Weather in March »Weather in April
April is a moderate spring month in Illnau, Switzerland, with an average temperature varying between 15.8°C (60.4°F) and 3.3°C (37.9°F). April's arrival is marked by an increase in the average high-temperature, moving from a chilly 9.6°C (49.3°F) in March to a mild 15.8°C (60.4°F). Weather in April »Weather in May
May, the last month of the spring in Illnau, is an enjoyable month, with an average temperature ranging between max 18.4°C (65.1°F) and min 6.1°C (43°F). May commences with an average high-temperature of a comfortable 18.4°C (65.1°F), showing little deviation from April's 15.8°C (60.4°F). Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in Illnau, Switzerland, with an average temperature ranging between max 22.7°C (72.9°F) and min 10.1°C (50.2°F). Illnau's transition into June is noticed by a slight rise in the average high-temperature, advancing from a refreshing 18.4°C (65.1°F) in May to a pleasant 22.7°C (72.9°F). Weather in June »Weather in July
July in Illnau, Switzerland, is a moderately hot summer month, with temperature in the range of an average low of 12.1°C (53.8°F) and an average high of 24.6°C (76.3°F). July proves to be the warmest month, recording an average peak temperature of 24.6°C (76.3°F) and a minimum temperature of 12.1°C (53.8°F). Weather in July »Weather in August
August, the last month of the summer in Illnau, is another warm month, with an average temperature ranging between min 12.1°C (53.8°F) and max 24.4°C (75.9°F). With the advent of August, Illnau experiences an average high-temperature of a still moderately hot 24.4°C (75.9°F), mirroring a close resemblance to the previous month. Weather in August »Weather in September
The first month of the autumn, September, is still a comfortable month in Illnau, Switzerland, with an average temperature fluctuating between 8.1°C (46.6°F) and 19.6°C (67.3°F). With the onset of September, the average high-temperature subtly recedes from August's warm 24.4°C (75.9°F) to an enjoyable 19.6°C (67.3°F). Weather in September »Weather in October
October, like September, is another mild autumn month in Illnau, Switzerland, with an average temperature ranging between min 4.6°C (40.3°F) and max 14.4°C (57.9°F). Illnau's progression into October involves a drop in the average high-temperature, receding from an enjoyable 19.6°C (67.3°F) in September to a mild 14.4°C (57.9°F). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Illnau, Switzerland, with temperature in the range of an average high of 8.7°C (47.7°F) and an average low of 1.2°C (34.2°F). The onset of November introduces a moderate change in Illnau's weather, with average high-temperatures falling from October's refreshing 14.4°C (57.9°F) to a frosty 8.7°C (47.7°F). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Illnau, Switzerland, with an average temperature varying between 4.2°C (39.6°F) and -1.8°C (28.8°F). Illnau's December weather shows a modest shift in high-temperatures, falling from November's chilly 8.7°C (47.7°F) to an icy 4.2°C (39.6°F). Weather in December »Updated: Feb 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Illnau experiences its lowest temperatures in January, with an average peak of 3.3°C (37.9°F) and a low of -3.3°C (26.1°F).
The most humid month is January, with an average relative humidity of 88%.
In Illnau, during the entire year, the rain falls for 155.4 days and collects up to 704mm (27.72") of precipitation.
January through May, October through December are months with snowfall in Illnau.
The month with the most snowfall in Illnau is January, when snow falls for 11.3 days and typically aggregates up to 182mm (7.17") of snow.
In Illnau, Switzerland, during the entire year, snow falls for 42.6 days and aggregates up to 729mm (28.7") of snow.
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Illnau.
The month with the least sunshine is February, with an average of 4.5h of sunshine.
The months with the lowest humidity are April and July, with an average relative humidity of 76%.
June through September are months without snowfall in Illnau.
June has the longest days of the year, with an average of 15h and 54min of daylight.
With an average maximum UV index of 6, June is the month with the highest UV index in Illnau, Switzerland.
In Illnau, July is known for its average highest temperatures, reaching a high of 24.6°C (76.3°F) and a low of 12.1°C (53.8°F).
The months with the most sunshine are July and August, with an average of 10.2h of sunshine.
The month with the least rainfall is September, when the rain falls for 9.9 days and typically collects 29mm (1.14") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Illnau, Switzerland, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
The month with the most rainfall in Illnau, Switzerland, is December, when the rain falls for 13.9 days and typically aggregates up to 82mm (3.23") of precipitation.
With an average of 8h and 30min of daylight, December has the shortest days of the year in Illnau, Switzerland.
Average temperature
Illnau, Switzerland
The warmest month (with the highest average high temperature) is July (24.6°C).
The month with the lowest average high temperature is January (3.3°C).
The months with the highest average low temperature are July and August (12.1°C).
The coldest month (with the lowest average low temperature) is January (-3.3°C).
Average pressure
Illnau, Switzerland
- Average pressure in January:
1019.3mbar - Average pressure in February:
1017.7mbar - Average pressure in March:
1017.2mbar - Average pressure in April:
1015.7mbar - Average pressure in May:
1016.2mbar - Average pressure in June:
1016.6mbar
- Average pressure in July:
1017mbar - Average pressure in August:
1017.7mbar - Average pressure in September:
1018.7mbar - Average pressure in October:
1018.6mbar - Average pressure in November:
1015.8mbar - Average pressure in December:
1020.8mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed
Illnau, Switzerland
- Average wind speed in January:
7.8km/h - Average wind speed in February:
8.3km/h - Average wind speed in March:
8.8km/h - Average wind speed in April:
7.5km/h - Average wind speed in May:
7.7km/h - Average wind speed in June:
7.1km/h
- Average wind speed in July:
7km/h - Average wind speed in August:
6.2km/h - Average wind speed in September:
6.5km/h - Average wind speed in October:
6.5km/h - Average wind speed in November:
6.8km/h - Average wind speed in December:
7.8km/h
The windiest month (with the highest average wind speed) is March (8.8km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity
Illnau, Switzerland
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall
Illnau, Switzerland
The wettest month (with the highest rainfall) is December (82mm).
The driest month (with the least rainfall) is September (29mm).
Average rainfall days
Illnau, Switzerland
- Average rainfall days in January:
11.3 days - Average rainfall days in February:
10.1 days - Average rainfall days in March:
13.7 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
18.4 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
10.2 days - Average rainfall days in November:
9.9 days - Average rainfall days in December:
13.9 days
The month with the highest number of rainy days is May (18.4 days).
The months with the least rainy days are September and November (9.9 days).
Average snowfall
Illnau, Switzerland
The month with the highest snowfall is January (182mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Illnau, Switzerland
- Average snowfall days in January:
11.3 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
6.3 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.3 days - Average snowfall days in November:
4.2 days - Average snowfall days in December:
8.1 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Illnau, Switzerland
- Average daylight in January:
9h and 0min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 36min - Average daylight in May:
15h and 6min - Average daylight in June:
15h and 54min
- Average daylight in July:
15h and 30min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 30min
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 30min).
- Average sunshine in January:
4h and 36min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 30min - Average sunshine in April:
9h and 0min - Average sunshine in May:
8h and 54min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 42min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 36min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days
Illnau, Switzerland
- Average sunshine days in January:
11.8 days - Average sunshine days in February:
11.1 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
14.3 days - Average sunshine days in August:
16.9 days - Average sunshine days in September:
19 days - Average sunshine days in October:
19.8 days - Average sunshine days in November:
16 days - Average sunshine days in December:
11.5 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is February (11.1 days).
Average UV index
Illnau, Switzerland
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Illnau, Switzerland
The months with the most cloud cover are January and February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Illnau, Switzerland
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).
