Climate and monthly weather forecastAltnau, Switzerland
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Altnau, Switzerland, with an average temperature fluctuating between -2.3°C (27.9°F) and 3.2°C (37.8°F). January, with an average high of 3.2°C (37.8°F) and a low of -2.3°C (27.9°F), signifies the coldest month of the year. Weather in January »Weather in February
February, the last month of the winter in Altnau, is also a wintry month, with an average temperature varying between 3.8°C (38.8°F) and -2.7°C (27.1°F). The advent of February signifies a minor shift to an average high-temperature of a still cold 3.8°C (38.8°F), aligning closely with January. Weather in February »Weather in March
March, the first month of the spring in Altnau, is a frosty month, with an average temperature varying between 0.8°C (33.4°F) and 8.8°C (47.8°F). As March arrives, a rise in the average high-temperature is observed, moving from a wintry 3.8°C (38.8°F) in February to a chilly 8.8°C (47.8°F). Weather in March »Weather in April
April in Altnau, Switzerland, is a refreshing spring month, with an average temperature fluctuating between 14.7°C (58.5°F) and 4.1°C (39.4°F). The rise of average high-temperatures is seen in April, with an increase from a frosty 8.8°C (47.8°F) in March to a mild 14.7°C (58.5°F). Weather in April »Weather in May
May, the last month of the spring in Altnau, is an enjoyable month, with an average temperature fluctuating between 17.5°C (63.5°F) and 7.3°C (45.1°F). The high-temperature average in May for Altnau is a comfortable 17.5°C (63.5°F), staying closely aligned with April's conditions. Weather in May »Weather in June
June, the first month of the summer in Altnau, is a pleasant month, with an average temperature ranging between max 21.4°C (70.5°F) and min 11.2°C (52.2°F). Observing a slight rise in June, the average high-temperature shifts from May's enjoyable 17.5°C (63.5°F) to an agreeable 21.4°C (70.5°F). Weather in June »Weather in July
July is a moderately hot summer month in Altnau, Switzerland, with an average temperature varying between 12.8°C (55°F) and 23.4°C (74.1°F). Altnau's peak temperatures tend to occur in July and August, with an average high-temperature of 23.4°C (74.1°F). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Altnau, Switzerland, with an average temperature varying between 23.4°C (74.1°F) and 12.9°C (55.2°F). July and August represent the warmest period, with an average high-temperature of 23.4°C (74.1°F). Weather in August »Weather in September
September, the first month of the autumn in Altnau, is also an enjoyable month, with an average temperature varying between 9°C (48.2°F) and 18.9°C (66°F). Altnau's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's moderately hot 23.4°C (74.1°F) to a refreshing 18.9°C (66°F). Weather in September »Weather in October
October, like September, is another refreshing autumn month in Altnau, Switzerland, with an average temperature varying between 14.1°C (57.4°F) and 5.4°C (41.7°F). Altnau's transition into October involves a gentle shift in temperature, receding from an enjoyable 18.9°C (66°F) in September to a moderate 14.1°C (57.4°F). Weather in October »Weather in November
November, the last month of the autumn in Altnau, is another chilly month, with temperature in the range of an average low of 2.2°C (36°F) and an average high of 8.6°C (47.5°F). In the transition to November, Altnau observes a drop in the average high-temperature, moving from a moderate 14.1°C (57.4°F) in October to a frosty 8.6°C (47.5°F). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Altnau, Switzerland, with temperature in the range of an average low of -0.8°C (30.6°F) and an average high of 4.4°C (39.9°F). December brings a minor shift in the average high-temperature, adjusting from a chilly 8.6°C (47.5°F) in November to an icy 4.4°C (39.9°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
Altnau, Switzerland, notes the coldest temperatures in January, with a average high of 3.2°C (37.8°F) and a low of -2.3°C (27.9°F).
The most humid month in Altnau, Switzerland, is January, with an average relative humidity of 86%.
Throughout the year, there are 161.9 rainfall days, and 588mm (23.15") of precipitation is accumulated.
January through May, October through December are months with snowfall.
The months with the most snowfall in Altnau, Switzerland, are January and February, with an average 96mm (3.78") of accumulated snow.
In Altnau, Switzerland, during the entire year, snow falls for 34.6 days and aggregates up to 384mm (15.12") of snow.
The months with the lowest UV index in Altnau are January, February, October through December, with an average maximum UV index of 2.
The months with the least sunshine are February and December, with an average of 4.9h of sunshine.
April and July, with an average relative humidity of 75%, are the least humid months.
In Altnau, Switzerland, snow does not fall in June through September.
June has the longest days of the year in Altnau, Switzerland, with an average of 15h and 54min of daylight.
June and July, with an average maximum UV index of 5, are months with the highest UV index in Altnau, Switzerland.
July and August are characterised by peak temperatures, with an average high of 23.4°C (74.1°F).
The month with the most sunshine in Altnau is July, with an average of 10.4h of sunshine.
The month with the most rainfall is August, when the rain falls for 16.4 days and typically aggregates up to 80mm (3.15") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, 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 least rainfall is November, when the rain falls for 9.7 days and typically collects 30mm (1.18") of precipitation.
December has the shortest days of the year in Altnau, Switzerland, with an average of 8h and 30min of daylight.
Average temperature
Altnau, Switzerland
The warmest months (with the highest average high temperature) are July and August (23.4°C).
The month with the lowest average high temperature is January (3.2°C).
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (-2.7°C).
Average pressure
Altnau, Switzerland
- Average pressure in January:
1019.2mbar - 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:
1016.5mbar
- Average pressure in July:
1017mbar - Average pressure in August:
1017.7mbar - Average pressure in September:
1018.7mbar - Average pressure in October:
1018.7mbar - Average pressure in November:
1015.8mbar - Average pressure in December:
1020.7mbar
The month with the highest atmospheric pressure is December (1020.7mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed
Altnau, Switzerland
- Average wind speed in January:
9.4km/h - Average wind speed in February:
9.5km/h - Average wind speed in March:
10km/h - Average wind speed in April:
8.3km/h - Average wind speed in May:
8.5km/h - Average wind speed in June:
7.7km/h
- Average wind speed in July:
7.7km/h - Average wind speed in August:
6.8km/h - Average wind speed in September:
7.4km/h - Average wind speed in October:
7.5km/h - Average wind speed in November:
8.1km/h - Average wind speed in December:
9.4km/h
The windiest month (with the highest average wind speed) is March (10km/h).
The calmest month (with the lowest average wind speed) is August (6.8km/h).
Average humidity
Altnau, Switzerland
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall
Altnau, Switzerland
The wettest month (with the highest rainfall) is August (80mm).
The driest month (with the least rainfall) is November (30mm).
Average rainfall days
Altnau, Switzerland
- Average rainfall days in January:
10.9 days - Average rainfall days in February:
10.2 days - Average rainfall days in March:
13 days - Average rainfall days in April:
13 days - Average rainfall days in May:
18.9 days - Average rainfall days in June:
16.9 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
16.4 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
10.9 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
12.1 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9.7 days).
Average snowfall
Altnau, Switzerland
The months with the highest snowfall are January and February (96mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Altnau, Switzerland
- Average snowfall days in January:
8.7 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
5.2 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.2 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:
3 days - Average snowfall days in December:
7.1 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Altnau, Switzerland
- Average daylight in January:
8h and 54min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - 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:
5h and 0min - Average sunshine in February:
4h and 54min - Average sunshine in March:
6h and 54min - Average sunshine in April:
9h and 30min - Average sunshine in May:
9h and 24min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 12min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 42min - Average sunshine in December:
4h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days
Altnau, Switzerland
- Average sunshine days in January:
15.2 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
10.4 days - Average sunshine days in August:
11.4 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
14 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (9.8 days).
Average UV index
Altnau, Switzerland
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Altnau, Switzerland
The months with the most cloud cover are January and February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Altnau, Switzerland
The months with the highest visibility are March, April, May, June, July, August and November (9km).
The months with the lowest visibility are January, February, September, October and December (8km).
