What is the weather in Koblenz today?

At the top of the page you will find the current temperature, precipitation and wind in Koblenz, updated in real time.

What is the 15-day forecast for Koblenz?

The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Koblenz.

Will it rain tomorrow in Koblenz?

Check the 48-hour hourly forecast to see exactly when precipitation is expected in Koblenz.

What is the air quality in Koblenz?

The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Koblenz.

Are there weather alerts for Koblenz?

Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.

At what altitude is Koblenz located?

Koblenz sits at around 349 m above sea level in the canton of Aargau. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Koblenz?

The warmest month in Koblenz is July, averaging 19.5 °C (1991–2020 normal). The coldest is January at 1.3 °C.

How much does it rain in Koblenz per year?

Koblenz receives about 1000 mm of precipitation a year. The wettest month is December (105 mm), the driest September (68 mm).

When is the best time to visit Koblenz?

For warmth and sunshine: July (19.5 °C on average, — h of sun). The coldest month is January (1.3 °C). Check the 15-day forecast above for your dates.

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Home › Aargau › Koblenz

Weather in Koblenz

Aargau, 349 m · continuously updated

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Wind: –
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Rain ahead: –
Sunset: –

Aare: 20.6 °C at Klingnau river temperature · FOEN gauge 2.0 km away · 27.09. 00h

Temperature · last 4 and next 28 hours

Koblenz weather: the next 24 hours

Updated hourly.

Koblenz weather hour by hour (48 h)

Koblenz 15-day forecast

Two-week trend.

Koblenz weekend weather Rain 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 Koblenz

Neighbouring municipalities, as the crow flies.

Klingnau2 km Zurzach2 km Leuggern3 km Full-Reuenthal3 km Böttstein4 km Leibstadt5 km Döttingen6 km Tegerfelden6 km

7-day forecast for Koblenz

Today (Sunday 27 Sep) in Koblenz: partly cloudy, 9 to 27 °C, precipitation 0.0 mm (0 %), wind up to 8 km/h. Tomorrow: overcast, 12 to 29 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	partly cloudy	9 °C	27 °C	0.0 mm	8 km/h
Tomorrow	overcast	12 °C	29 °C	0.0 mm	11 km/h
Tue 29 Sep	overcast	11 °C	28 °C	0.0 mm	8 km/h
Wed 30 Sep	overcast	15 °C	26 °C	0.0 mm	5 km/h
Thu 1 Oct	light rain	15 °C	19 °C	3.6 mm	4 km/h
Fri 2 Oct	fog	11 °C	22 °C	0.0 mm	9 km/h
Sat 3 Oct	fog	13 °C	23 °C	0.0 mm	6 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 349 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected in Koblenz today or tomorrow. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Koblenz

Sunday 27 Sep in Koblenz, hour by hour: sunny in the morning, sunny in the afternoon, mostly sunny in the evening. Low 9 °C around 07:00, high 28 °C around 16:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	12 °C	5 km/h
01:00	sunny	12 °C	6 km/h
02:00	sunny	11 °C	6 km/h
03:00	sunny	10 °C	5 km/h
04:00	mostly sunny	10 °C	5 km/h
05:00	mostly sunny	10 °C	5 km/h
06:00	mostly sunny	9 °C	5 km/h
07:00	mostly sunny	9 °C	5 km/h
08:00	mostly sunny	9 °C	4 km/h
09:00	sunny	12 °C	3 km/h
10:00	sunny	15 °C	2 km/h
11:00	sunny	19 °C	2 km/h
12:00	sunny	22 °C	1 km/h
13:00	mostly sunny	24 °C	4 km/h
14:00	sunny	26 °C	7 km/h
15:00	sunny	27 °C	8 km/h
16:00	sunny	28 °C	9 km/h
17:00	mostly sunny	28 °C	9 km/h
18:00	mostly sunny	27 °C	7 km/h
19:00	mostly sunny	23 °C	5 km/h
20:00	sunny	21 °C	2 km/h
21:00	mostly sunny	18 °C	1 km/h
22:00	partly cloudy	16 °C	3 km/h
23:00	mostly sunny	14 °C	5 km/h

Hourly forecast issued 27.09.2026 for Koblenz (349 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Koblenz weather tomorrow

Tomorrow, Monday 28 Sep, in Koblenz: overcast, 12 to 29 °C, wind up to 11 km/h. No precipitation expected.

Koblenz weekend weather

This weekend in Koblenz: Saturday fog, 13 to 23 °C; Sunday partly cloudy, 9 to 27 °C.

Will it rain in Koblenz this week?

Yes: 1 day with precipitation is expected in Koblenz over the next 7 days, 3.6 mm in total. Wettest day: Thursday 1 Oct (3.6 mm).

The best day to go out in Koblenz

The best day of the next 7 in Koblenz: Sunday 27 Sep, partly cloudy, up to 27 °C.

The last 7 days in Koblenz

From 20 Sep to 26 Sep: 15.9 °C on average, 1.2 °C above the September normal (14.7 °C), 0 mm of precipitation (7-day normal: 16 mm). Warmest day: saturday 26 Sep (27 °C); coolest night: saturday 26 Sep (6 °C).

Day	Min	Max
Sun 20 Sep	10 °C	26 °C
Mon 21 Sep	12 °C	22 °C
Tue 22 Sep	7 °C	22 °C
Wed 23 Sep	7 °C	23 °C
Thu 24 Sep	8 °C	21 °C
Fri 25 Sep	7 °C	23 °C
Sat 26 Sep	6 °C	27 °C

Open-Meteo analyses of the last 7 days (models and assimilated observations), MeteoSwiss 1991–2020 normals. Updated nightly.

Climate of Koblenz: 1991–2020 normals

In Koblenz (349 m), the mean annual temperature is 10.1 °C. The warmest month is July (19.5 °C on average) and the coldest January (1.3 °C). About 1000 mm of precipitation falls per year, peaking in December (105 mm) with a minimum in September (68 mm). On average there are 75 frost days and 16 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 33.1 °C and the absolute minimum −7.9 °C.

10.1 °CMean annual temperature

1000 mmPrecipitation per year

75Frost days per year

57Summer days (≥ 25 °C)

JFMAMJJASOND

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

Month	Mean T	Abs. max	Abs. min	Precip. (mm)	Frost days	Summer days
Jan	1.3 °C	12.1 °C	−7.9 °C	88	18	0
Feb	2.1 °C	14.1 °C	−7.3 °C	74	18	0
Mar	6.0 °C	19.4 °C	−4.0 °C	76	13	0
Apr	9.9 °C	24.0 °C	−1.0 °C	68	3	1
May	14.0 °C	28.0 °C	3.2 °C	91	0	6
Jun	17.7 °C	31.6 °C	7.0 °C	83	0	13
Jul	19.5 °C	33.1 °C	9.5 °C	93	0	17
Aug	18.9 °C	32.2 °C	8.8 °C	86	0	16
Sep	14.7 °C	27.1 °C	5.0 °C	68	0	4
Oct	10.2 °C	22.0 °C	1.1 °C	81	1	0
Nov	5.2 °C	15.9 °C	−3.2 °C	87	6	0
Dec	2.1 °C	12.3 °C	−6.8 °C	105	15	0
Year	10.1 °C	33.1 °C	−7.9 °C	1000	75	57

Source: MeteoSwiss open data (1991–2020 normals) — stations Leibstadt (4 km, 341 m), Beznau (5 km, 326 m), Würenlingen / PSI (8 km, 334 m), adjusted to the elevation of Koblenz (349 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.