Weather in Bad Honnef

Forecast: MOSMIX (DWD-Statistik über ICON + ECMWF) · Run 08.10. 23:00 Uhr · Station KOENIGSWINTER (4,1 km from the centre) · own station correction −1,5 °C (from our station comparison). We show where our data comes from – and how often we get it wrong. Measured against official stations, we were recently off by ±1,6 °C here (up to 24 h), rain forecast 92 % correct.
Today: frontal passage – we're typically off by ±1,5 °C on days like this (±1,5 °C on settled days). Honest.
We beat the "same as yesterday" rule of thumb by 40 %.

Now · as of 06:00

7°wolkig

Later today

High · 23:00 Uhr12° Low7°

9 km/h aus SW 71 % 94 % 1020 hPa Rain last 24 h 11,2 mm (measured, as of 05:00) 07:45 18:51 waning crescent (4 %)

Rain Radar

Full view with all layers →

The next few days

Day	Min	Max	Rain	Risk	Sun
Fr, 09.10.	7°	12°	6,2 mm	71 %	0,1 h	07:45	18:51
Sa, 10.10.	9°	13° 14:00	2,0 mm	60 %	4,6 h	07:46	18:49
So, 11.10.	7°	12° 15:00	0,0 mm	16 %	4,1 h	07:48	18:47
Mo, 12.10.	6°	14° 15:00	0,0 mm	6 %	4,8 h	07:50	18:45
Di, 13.10.	9°	16° 16:00	0,0 mm	9 %	3,7 h	07:51	18:42
Mi, 14.10.	11°	17° 15:00	0,0 mm	12 %	3,6 h	07:53	18:40
Do, 15.10.	10°	17° 15:00	0,0 mm	10 %	4,1 h	07:55	18:38
Fr, 16.10.	9°	15° 16:00	0,0 mm	25 %	2,9 h	07:56	18:36
Sa, 17.10.	7°	12° 16:00	0,0 mm	20 %	3,5 h	07:58	18:34
So, 18.10.	7°	13° 15:00	0,0 mm	12 %	4,1 h	08:00	18:32

Outlook: the next few weeks

A genuine day-by-day forecast only reaches about 10 days out – anything beyond that is statistics, not a forecast. That's why we don't show a 30- or 90-day outlook. What can be honestly stated is the long-term normal: in Bad Honnef the average temperature in October is 10,9 °C, in November it's 6,9 °C (1991-2020 climate mean for the local climate station, see below). We show openly how often our forecast actually holds up.

How reliable is the forecast?

How our forecast daily high has shifted across recent runs. Flat line = the forecast is holding, jittery = still shifting.

Fr, 09.10.12° stabil (±0,6 °C über 12 Läufe)

Sa, 10.10.13° stabil (±0,3 °C über 12 Läufe)

So, 11.10.12° stabil (±0,7 °C über 12 Läufe)

Mo, 12.10.14° wackelt noch (±1,4 °C über 12 Läufe)

Today at a glanceFr, 09.10.

Garden no frost

Low of 6,3 °C in 48 h, 8,0 mm rain in 24 h. Spray/watering window: 20:00 to 00:00 (5 h) – dry, calm, stays dry afterwards. Product-dependent – check the label.

Outdoors dry

06:00 to 07:00 (2 h) · gusts up to 35 km/h.

Pollen no load

Region Rhein.-Westfäl. Tiefland · As of 08.10., 11:00 Uhr · DWD pollen forecast

Balcony solar: today ≈ 0,46 kWh per kWp, tomorrow 2,02 kWh · Best 2 h for high loads today: 13:00 to 14:00 (south, vertical) – adjust to your orientation in the app.

Climate in Bad Honnef (1991-2020)

The warmest month in Bad Honnef is Juli (avg 19,5 °C), the coldest is Januar (avg 3,3 °C). The most rain falls in Juli (avg 79,0 mm), the least in Februar (avg 40,0 mm). The sunniest month is Juli (avg 213,2 h).

Annual mean 11,0 °C, 688 mm precipitation, 1599 hours of sunshine, 64 frost days. Weather station Bonn-Friesdorf (8,9 km away).

Record on 09.10.: 25,7 °C (1979), coldest value -2,1 °C (1951), highest rainfall 22,1 mm (2024) – series since 1948

Weather nearby

Königswinter · Bonn · Bad Neuenahr-Ahrweiler · Meckenheim · Sankt Augustin · Hennef (Sieg) · all towns