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Weather in Aarau

Aargau, 397 m · continuously updated

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Wind
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Humidity
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Rain ahead
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Sunset
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Temperature · last 4 and next 28 hours

Aarau weather: the next 24 hours

Updated hourly.

Aarau weather hour by hour (48 h)

Aarau 15-day forecast

Two-week trend.

Aarau weekend weatherRain radar

Sun and golden hours

Sunrise –, golden light until –

Sunset –, golden light from –

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Air quality

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European index, measured continuously.

UV index

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Daily maximum — protection advised from 3.

Freezing level

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Snow settles about 300 m below it.

Around Aarau

Neighbouring municipalities, as the crow flies.

7-day forecast for Aarau

Today (Saturday 14 Nov) in Aarau: overcast, −2 to 6 °C, precipitation 0.0 mm (0 %), wind up to 7 km/h. Tomorrow: showers, 0 to 11 °C.

Show the 7-day table
DayWeatherMinMaxPrecip.Wind
Todayovercast−2 °C6 °C0.0 mm7 km/h
Tomorrowshowers0 °C11 °C2.5 mm11 km/h
Mon 16 Novshowers8 °C11 °C5.2 mm25 km/h
Tue 17 Novlight rain8 °C14 °C4.4 mm28 km/h
Wed 18 Novthunderstorms10 °C13 °C8.4 mm24 km/h
Thu 19 Novovercast10 °C15 °C1.2 mm25 km/h
Fri 20 Novlight rain0 °C9 °C4.2 mm24 km/h

Forecast updated on 14.11.2026 at 11:18 (Open-Meteo model, elevation 397 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected today in Aarau. Tomorrow: rain from 04:00 to 08:00. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Aarau

Saturday 14 Nov in Aarau, hour by hour: sunny in the morning, partly cloudy in the afternoon, sunny in the evening. Low −2 °C around 07:00, high 6 °C around 15:00. No rainy hour.

Show the 24-hour table
TimeWeatherTemp.Precip.Wind
00:00sunny0 °C0.0 mm4 km/h
01:00sunny0 °C0.0 mm4 km/h
02:00sunny0 °C0.0 mm4 km/h
03:00sunny0 °C0.0 mm4 km/h
04:00sunny−1 °C0.0 mm3 km/h
05:00sunny−1 °C0.0 mm4 km/h
06:00sunny−1 °C0.0 mm3 km/h
07:00sunny−2 °C0.0 mm2 km/h
08:00sunny−2 °C0.0 mm2 km/h
09:00sunny−1 °C0.0 mm2 km/h
10:00sunny1 °C0.0 mm2 km/h
11:00mostly sunny3 °C0.0 mm7 km/h
12:00partly cloudy4 °C0.0 mm7 km/h
13:00partly cloudy5 °C0.0 mm4 km/h
14:00partly cloudy5 °C0.0 mm4 km/h
15:00mostly sunny6 °C0.0 mm5 km/h
16:00mostly sunny6 °C0.0 mm5 km/h
17:00sunny4 °C0.0 mm4 km/h
18:00sunny3 °C0.0 mm3 km/h
19:00sunny2 °C0.0 mm2 km/h
20:00partly cloudy2 °C0.0 mm1 km/h
21:00overcast1 °C0.0 mm2 km/h
22:00overcast1 °C0.0 mm2 km/h
23:00overcast1 °C0.0 mm3 km/h

Hourly forecast issued 14.11.2026 for Aarau (397 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Weather today in Aarau

Today, Saturday 14 Nov in Aarau: overcast, −2 to 6 °C, wind up to 7 km/h. No precipitation expected. That is 3.1 °C below the climate normal for November in Aarau (5.1 °C average over 1991-2020).

Aarau weather tomorrow

Tomorrow, Sunday 15 Nov, in Aarau: showers, 0 to 11 °C, wind up to 11 km/h. Precipitation expected: 2.5 mm, 100 % probability.

What is the temperature in Aarau?

Today in Aarau (397 m): −2 to 6 °C. Tomorrow: 0 to 11 °C. Over the next 7 days, highs range from 6 to 15 °C, averaging 11 °C.

Aarau weekend weather

This weekend in Aarau: Saturday overcast, −2 to 6 °C; Sunday showers, 0 to 11 °C.

Will it rain in Aarau this week?

Yes: 6 days with precipitation are expected in Aarau over the next 7 days, 25.9 mm in total. Wettest day: Wednesday 18 Nov (8.4 mm).

What is the UV index in Aarau?

Today in Aarau (397 m), the UV index peaks at 2 (low) around midday. No particular protection is needed. In the mountains, radiation rises by about 10 % per 1,000 m, and snow reflects up to 80 % of it.

The best day to go out in Aarau

The best day of the next 7 in Aarau: Thursday 19 Nov, overcast, up to 15 °C.

Climate of Aarau: 1991–2020 normals

In Aarau (397 m), the mean annual temperature is 10.0 °C. The warmest month is July (19.4 °C on average) and the coldest January (1.2 °C). About 986 mm of precipitation falls per year, peaking in August (106 mm) with a minimum in February (57 mm). The sun shines for about 1553 hours a year, mostly in July (225 h). On average there are 78 frost days and 14 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 33.1 °C and the absolute minimum −8.8 °C.

10.0 °CMean annual temperature
986 mmPrecipitation per year
1553 hSunshine hours per year
78Frost days per year
56Summer days (≥ 25 °C)
JFMAMJJASOND

Mean monthly precipitation (mm) — bar height relative to the wettest month.

MonthMean TAbs. maxAbs. minPrecip. (mm)Sunshine (h)Frost daysSummer days
Jan1.2 °C11.4 °C−8.8 °C6742190
Feb1.9 °C13.7 °C−8.1 °C5775180
Mar5.9 °C19.2 °C−4.7 °C66133110
Apr9.9 °C23.9 °C−1.3 °C6916931
May14.0 °C28.0 °C2.9 °C10618305
Jun17.6 °C31.6 °C6.7 °C98205012
Jul19.4 °C33.1 °C9.1 °C106225018
Aug18.8 °C32.1 °C8.4 °C106208016
Sep14.6 °C26.9 °C4.4 °C7515104
Oct10.1 °C21.7 °C0.4 °C778710
Nov5.1 °C15.4 °C−3.7 °C744380
Dec1.9 °C11.8 °C−7.4 °C8632170
Year10.0 °C33.1 °C−8.8 °C98615537856

At what altitude is Aarau located?

Aarau sits at around 397 m above sea level in the canton of Aargau. This elevation directly affects temperatures, the rain-snow line and snow cover: on average, the temperature drops by about 0.55 °C per 100 m of altitude.

What is the warmest month in Aarau?

The warmest month in Aarau is July, averaging 19.4 °C; the coldest is January, at 1.2 °C. The annual mean is 10.0 °C (MeteoSwiss 1991–2020 normals, reference station Buchs / Aarau).

How much does it rain in Aarau per year?

Aarau receives about 986 mm of precipitation a year, or 82 mm a month on average. The wettest month is August (106 mm) and the driest February (57 mm), according to the MeteoSwiss 1991–2020 normals.

How many frost days does Aarau have?

Aarau averages 78 frost days a year, most of them in January (19 days). Conversely, 56 summer days exceed 25 °C, 14 of them above 30 °C. Mean values from the MeteoSwiss 1991–2020 normals.

How many hours of sunshine does Aarau get per year?

The sun shines for about 1553 hours a year in Aarau. The sunniest month is July (225 h) and the least sunny December (32 h), according to the MeteoSwiss 1991–2020 normals.

How big is the temperature difference between summer and winter in Aarau?

In Aarau, the monthly mean rises from 1.2 °C in January to 19.4 °C in July: a 18.2 °C gap between the coldest and the warmest month. Absolute extremes over 1991–2020 range from −8.8 °C to 33.1 °C.

When is the best time to visit Aarau?

For warmth and sunshine: July (19.4 °C on average, 225 h of sun). To avoid rain, February is the driest month (57 mm). The coldest month is January (1.2 °C).

Source: MeteoSwiss open data (1991–2020 normals) — stations Buchs / Aarau (2 km, 387 m), Gösgen (6 km, 380 m), Rünenberg (14 km, 611 m), adjusted to the elevation of Aarau (397 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.