August weather forecast
Aarau, Switzerland

August

Weather in August

Aarau, in August, basks in the charm of late summer. With temperatures aligning to 23.3°C (73.9°F) yet again, warmth wraps the city comfortably. August comes with abundant sunshine, inviting locals and visitors to enjoy outdoor recreational pursuits. The month wraps up leaving behind balmy weather, setting the stage for oncoming autumn. August, in many ways, becomes a bridge between the hot summer period and the refreshing autumn.

Temperature

In Aarau, July and August are characterised by the peak of temperatures, recording an average high of 23.3°C (73.9°F).

Humidity

In Aarau, the average relative humidity in August is 79%.

Rainfall

In August, the rain falls for 18.3 days. Throughout August, 95mm (3.74") of precipitation is accumulated. Throughout the year, there are 190.8 rainfall days, and 880mm (34.65") of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in August is 14h and 13min.
On the first day of the month, sunrise is at 06:06 and sunset at 21:01. On the last day of August, sunrise is at 06:46 and sunset at 20:09 CEST.

Sunshine

With an average of 10.4h of sunshine, August has the most sunshine of the year.

UV index

In Aarau, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 4 in August translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Frequently asked questions

What is the warmest month?
In Aarau, the warmest period comes during July and August, when the average high-temperature touches 23.3°C (73.9°F).
What is the usual temperature for Aarau in August?
August temperatures vary between a high-temperature of 23.3°C (73.9°F) and a low-temperature of 11.8°C (53.2°F).
What is the average humidity in August?
The average relative humidity in August is 79%.
How many days does it rain in August?
In Aarau, in August, during 18.3 rainfall days, 95mm (3.74") of precipitation is typically accumulated.
When it does not snow?
In Aarau, Switzerland, snow does not fall in June through September.
What is the average length of the day in August in Aarau?
In Aarau, the average day length in August is 14h and 13min.
What time are sunrise and sunset in August?
On the first day of August, sunrise is at 06:06 and sunset at 21:01. On the last day of the month, sunrise is at 06:46 and sunset at 20:09 CEST.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10.4h of sunshine.
How long on average sun shines in August?
In Aarau, the average sunshine duration in August is 10.4h.
What is the UV index reading in August?
In August, the average daily maximum UV index in Aarau is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in August - Aarau, Switzerland
Average temperature in August
Aarau, Switzerland
  • Average high temperature in August: 23.3°C

The warmest months (with the highest average high temperature) are July and August (23.3°C).
The month with the lowest average high temperature is January (2.9°C).

  • Average low temperature in August: 11.8°C

The months with the highest average low temperature are July and August (11.8°C).
The coldest month (with the lowest average low temperature) is February (-3.4°C).

Average pressure in August - Aarau, Switzerland
Average pressure in August
Aarau, Switzerland
  • Average pressure in August: 1017.7mbar

The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).

Average wind speed in August - Aarau, Switzerland
Average wind speed in August
Aarau, Switzerland
  • Average wind speed in August: 5.9km/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 (5.9km/h).

Average humidity in August - Aarau, Switzerland
Average humidity in August
Aarau, Switzerland
  • Average humidity in August: 79%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and July (78%).

Average rainfall in August - Aarau, Switzerland
Average rainfall in August
Aarau, Switzerland
  • Average rainfall in August: 95mm

The wettest month (with the highest rainfall) is May (106mm).
The driest month (with the least rainfall) is September (45mm).

Average rainfall days in August - Aarau, Switzerland
Average rainfall days in August
Aarau, Switzerland
  • Average rainfall days in August: 18.3 days

The month with the highest number of rainy days is May (22.4 days).
The month with the least rainy days is February (10.6 days).

Average snowfall in August - Aarau, Switzerland
Average snowfall in August
Aarau, Switzerland
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (153mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in August - Aarau, Switzerland
Average snowfall days in August
Aarau, Switzerland
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August / Average sunshine in August - Aarau, Switzerland
Average daylight in August /
Average sunshine in August
Aarau, Switzerland
  • Average daylight in August: 14h and 1min

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 August: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in August - Aarau, Switzerland
Average sunshine days in August
Aarau, Switzerland
  • Average sunshine days in August: 9.6 days

The month with the most sunshine days is October (15 days).
The month with the least sunshine days is May (6.6 days).

Average UV index in August - Aarau, Switzerland
Average UV index in August
Aarau, Switzerland
  • Average UV index in August: 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, October, November and December (UV index 2).

Average cloud cover in August - Aarau, Switzerland
Average cloud cover in August
Aarau, Switzerland
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in August - Aarau, Switzerland
Average visibility in August
Aarau, Switzerland
  • Average visibility in August: 9km

The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).

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