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Weather in Kortenberg
Flemish Brabant, 44 m · continuously updated
Zaventem (Melsbroek) (1 km) · 10 °C · KMI/IRM 14:00
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Temperature · last 4 and next 28 hours
Kortenberg weather: the next 24 hours
Updated hourly.
Kortenberg 15-day forecast
Two-week trend.
Sun and golden hours
Sunrise –, golden light until –
Sunset –, golden light from –
–
Air quality
European index, modelled by Copernicus (CAMS).
UV index
Daily maximum — protection advised from 3.
Freezing level
Snow settles about 300 m below it.
Around Kortenberg
Neighbouring towns, as the crow flies.
Official weather warnings
No active warning for Flemish Brabant.
Updated 15 Nov 13:48.
Is there an active weather warning for Kortenberg?
No active warning for Flemish Brabant.
Latest RMI observation near Kortenberg
Measured at Zaventem (Melsbroek), 1 km from Kortenberg: situation as of 15 November 2026, 14:00. Zaventem (Melsbroek) is the nearest weather station of the RMI/KMI (Royal Meteorological Institute of Belgium), one of the country's 28 synoptic stations. These are measured values, not a forecast; this page is refreshed three times a day, hence the time shown.
| Situation as of | 15 November 2026, 14:00 |
|---|---|
| Temperature | 9.5 °C |
| Wind | 29 km/h S |
| Gusts | 40 km/h |
| Rain, last hour | — |
| Humidity | — |
| Pressure | 1003 hPa |
Observations from the 28 RMI stations
Source: RMI/KMI (Royal Meteorological Institute of Belgium), open observation data, Creative Commons Attribution 4.0 (CC BY 4.0) licence. The RMI is not liable for any damage resulting from the use of these data. Raw, unvalidated data shown as published, with wind converted from m/s to km/h. Data: opendata.meteo.be · CC BY 4.0
The observed climate near Kortenberg
The weather station nearest to Kortenberg, Uccle located 104 m above sea level, is 16 km away; its records cover 1795–2025. In November, the mean temperature there is 7.3 °C over 1991–2020, 1.0 °C more than over 1961–1990 (6.3 °C), with about – mm of rain. The warmest month ever measured is July 2006 (23.5 °C), the coldest February 1956 (−6.2 °C). See the full series of Uccle
Today in Kortenberg
- No washing outside today: rain, or a risk of rain, covers the hours when it could dry. How it is calculated
- Terrace and barbecue between 18:00 and 23:00: rain likely (1.9 mm, up to 86 % chance). Have some shelter or a plan B ready. How it is calculated
- Best time to air the house: tomorrow, between 11:00 and 14:00. The outdoor dew point drops to 4.6 °C; once warmed to 20 °C, that air holds only 36 % humidity, against 50 % in a typical home: opening the windows dries the house. How it is calculated
- Garden: 26.2 mm of rain expected within 48 h, against a need of 1.2 mm. No need to water, the rain will do it. How it is calculated
Calculated from Open-Meteo forecasts of 2026-11-15 14:48 (local time): model values, not measurements. All of today's advice
7-day forecast for Kortenberg
Today (Sunday 15 Nov) in Kortenberg: heavy drizzle, 1 to 11 °C, precipitation 3.4 mm (86 %), wind up to 21 km/h. Tomorrow: rain, 4 to 10 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | heavy drizzle | 1 °C | 11 °C | 3.4 mm | 21 km/h |
| Tomorrow | rain | 4 °C | 10 °C | 4.6 mm | 30 km/h |
| Tue 17 Nov | rain | 4 °C | 14 °C | 20.8 mm | 42 km/h |
| Wed 18 Nov | light drizzle | 8 °C | 12 °C | 1.4 mm | 24 km/h |
| Thu 19 Nov | showers | 8 °C | 10 °C | 13.0 mm | 22 km/h |
| Fri 20 Nov | showers | 2 °C | 8 °C | 19.6 mm | 13 km/h |
| Sat 21 Nov | overcast | 1 °C | 10 °C | 0.0 mm | 11 km/h |
Tomorrow's weather in Kortenberg
Tomorrow, Monday 16 Nov, in Kortenberg: rain, from 4 to 10 °C, 4.6 mm of precipitation (probability 56 %), wind up to 30 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  overcast | 10 °C | 0.0 mm | 56 % | 16 km/h |
| 03:00 |  light drizzle | 9 °C | 0.2 mm | 50 % | 19 km/h |
| 06:00 | light drizzle | 8 °C | 0.3 mm | 52 % | 26 km/h |
| 09:00 | overcast | 8 °C | 0.0 mm | 42 % | 25 km/h |
| 12:00 | overcast | 8 °C | 0.0 mm | 27 % | 22 km/h |
| 15:00 |  sunny | 7 °C | 0.0 mm | 13 % | 21 km/h |
| 18:00 | overcast | 5 °C | 0.0 mm | 11 % | 16 km/h |
| 21:00 | overcast | 4 °C | 0.0 mm | 22 % | 7 km/h |
Frequently asked questions
Will it rain tomorrow in Kortenberg?
Yes: 4.6 mm expected, probability 56 %.
How warm will it be tomorrow in Kortenberg?
Between 4 and 10 °C.
The weekend
Today, Sunday, in Kortenberg: heavy drizzle, 1 to 11 °C. Next weekend: Saturday overcast, 1 to 10 °C, Sunday heavy drizzle, 4 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | heavy drizzle | 1 °C | 11 °C | 3.4 mm | 21 km/h |
| Sat 21 Nov | overcast | 1 °C | 10 °C | 0.0 mm | 11 km/h |
| Sun 22 Nov | heavy drizzle | 4 °C | 9 °C | 7.8 mm | 20 km/h |
Hour by hour
The next 48 hours in Kortenberg, hour by hour: temperature from 4 to 13 °C, 26.2 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 14:00 | overcast | 9 °C | 0.0 mm | 9 % | 20 km/h |
| 15:00 | overcast | 9 °C | 0.0 mm | 20 % | 21 km/h |
| 16:00 | drizzle | 9 °C | 0.5 mm | 33 % | 20 km/h |
| 17:00 | drizzle | 9 °C | 0.9 mm | 52 % | 19 km/h |
| 18:00 | heavy drizzle | 10 °C | 1.2 mm | 73 % | 20 km/h |
| 19:00 | drizzle | 11 °C | 0.7 mm | 86 % | 21 km/h |
| 20:00 | overcast | 11 °C | 0.0 mm | 86 % | 17 km/h |
| 21:00 | overcast | 11 °C | 0.0 mm | 79 % | 18 km/h |
| 22:00 | overcast | 10 °C | 0.0 mm | 71 % | 17 km/h |
| 23:00 | overcast | 10 °C | 0.0 mm | 64 % | 18 km/h |
| 00:00 | overcast | 10 °C | 0.0 mm | 56 % | 16 km/h |
| 01:00 | overcast | 10 °C | 0.0 mm | 51 % | 16 km/h |
| 02:00 | light drizzle | 10 °C | 0.1 mm | 50 % | 21 km/h |
| 03:00 | light drizzle | 9 °C | 0.2 mm | 50 % | 19 km/h |
| 04:00 |  rain | 9 °C | 2.6 mm | 51 % | 23 km/h |
| 05:00 | light rain | 9 °C | 1.3 mm | 52 % | 30 km/h |
| 06:00 | light drizzle | 8 °C | 0.3 mm | 52 % | 26 km/h |
| 07:00 | light drizzle | 8 °C | 0.1 mm | 51 % | 25 km/h |
| 08:00 | overcast | 8 °C | 0.0 mm | 47 % | 27 km/h |
| 09:00 | overcast | 8 °C | 0.0 mm | 42 % | 25 km/h |
| 10:00 | overcast | 8 °C | 0.0 mm | 37 % | 23 km/h |
| 11:00 | overcast | 7 °C | 0.0 mm | 32 % | 23 km/h |
| 12:00 | overcast | 8 °C | 0.0 mm | 27 % | 22 km/h |
| 13:00 | overcast | 8 °C | 0.0 mm | 22 % | 23 km/h |
| 14:00 |  partly cloudy | 7 °C | 0.0 mm | 17 % | 22 km/h |
| 15:00 | sunny | 7 °C | 0.0 mm | 13 % | 21 km/h |
| 16:00 | overcast | 7 °C | 0.0 mm | 10 % | 17 km/h |
| 17:00 | overcast | 6 °C | 0.0 mm | 10 % | 17 km/h |
| 18:00 | overcast | 5 °C | 0.0 mm | 11 % | 16 km/h |
| 19:00 | overcast | 4 °C | 0.0 mm | 14 % | 12 km/h |
| 20:00 | overcast | 4 °C | 0.0 mm | 17 % | 8 km/h |
| 21:00 | overcast | 4 °C | 0.0 mm | 22 % | 7 km/h |
| 22:00 | overcast | 4 °C | 0.0 mm | 27 % | 7 km/h |
| 23:00 | overcast | 4 °C | 0.0 mm | 33 % | 8 km/h |
| 00:00 | light drizzle | 4 °C | 0.4 mm | 39 % | 9 km/h |
| 01:00 | light rain | 4 °C | 1.5 mm | 45 % | 9 km/h |
| 02:00 | light rain | 4 °C | 2.1 mm | 50 % | 10 km/h |
| 03:00 | light rain | 4 °C | 1.6 mm | 54 % | 17 km/h |
| 04:00 | heavy drizzle | 5 °C | 1.1 mm | 59 % | 19 km/h |
| 05:00 | heavy drizzle | 5 °C | 1.2 mm | 66 % | 19 km/h |
| 06:00 | rain | 5 °C | 3.1 mm | 74 % | 20 km/h |
| 07:00 | rain | 5 °C | 2.6 mm | 80 % | 18 km/h |
| 08:00 | drizzle | 6 °C | 0.8 mm | 83 % | 13 km/h |
| 09:00 | light rain | 6 °C | 1.3 mm | 85 % | 9 km/h |
| 10:00 | light drizzle | 6 °C | 0.2 mm | 86 % | 4 km/h |
| 11:00 | light drizzle | 9 °C | 0.1 mm | 88 % | 13 km/h |
| 12:00 | light drizzle | 13 °C | 0.1 mm | 90 % | 26 km/h |
| 13:00 | light rain | 13 °C | 2.2 mm | 90 % | 20 km/h |
Location of Kortenberg
Kortenberg lies at 44 m, close to the average of the 63 places we cover in the province of Flemish Brabant (41 m). That makes it the 27th highest of the 63. The main town, Leuven, lies 11 km to the east. The nearest places we cover are Steenokkerzeel (4 km to the north-west), Zaventem (5 km to the west), Kraainem (6 km to the south-west) and Wezembeek-Oppem (6 km to the south-west). With about 20,279 inhabitants according to GeoNames, Kortenberg is the 18th largest of the 62 places we cover in the province of Flemish Brabant. Of the places of interest on this site, the nearest are Atomium (sight, 14 km to the west) and Sonian Forest (natural site, 14 km to the south-west).
Today is close to the November normal (10.2 °C).
Climate of Kortenberg: 1991–2020 normals
In Kortenberg, July is typically the warmest month (up to 23.7 °C on average), while January is the coldest at 1.6 °C. August sees the most rain, with around 89 mm.
By season (average highs, 1991–2020 normals): winter 6.9 °C and 222 mm of rain, spring 15.2 °C and 157 mm, summer 22.9 °C and 242 mm, autumn 15.1 °C and 206 mm. The wettest season is summer (29 % of the annual total), the driest spring (19 %).
| Max T (°C) | Min T (°C) | Rainfall (mm) | Rainy days | |
|---|---|---|---|---|
| January | 6.4 | 1.6 | 74 | 13 |
| February | 7.5 | 1.6 | 63 | 12 |
| March | 11.4 | 3.7 | 55 | 12 |
| April | 15.4 | 6.2 | 45 | 11 |
| May | 18.9 | 9.7 | 58 | 12 |
| June | 21.7 | 12.7 | 72 | 12 |
| July | 23.7 | 14.8 | 81 | 13 |
| August | 23.4 | 14.3 | 89 | 13 |
| September | 20.0 | 11.5 | 65 | 12 |
| October | 15.2 | 8.3 | 69 | 12 |
| November | 10.2 | 4.7 | 72 | 13 |
| December | 6.8 | 2.2 | 84 | 14 |
Compared with Leuven, the main town 11 km to the east, highs in the warmest month are 0.2 °C lower here, and the year brings 14 mm less precipitation. In no month does the average low fall below 0 °C; in 3 months the average high exceeds 20 °C (June, July and August).
Nearby places with normals of their own (from another station or reanalysis grid cell) compare as follows: Wezembeek-Oppem (6 km to the south-west): summers 0.1 °C cooler and 33 mm wetter a year; Kampenhout (6 km to the north): summers 0.2 °C warmer and 3 mm drier a year; Machelen (8 km to the west): almost identical normals. Among the 63 places we cover in the province of Flemish Brabant whose normals come from the ERA5 reanalysis, Kortenberg ranks 22nd for summer warmth and 52nd for annual precipitation. The warmest summers are in Rotselaar, Haacht and Boortmeerbeek and the coolest in Landen; the wettest year is in Hoegaarden and the driest in Geetbets.
What is the warmest month in Kortenberg?
The warmest month in Kortenberg is typically July, averaging 23.7 °C (1991–2020 normal). The coldest is January, at 1.6 °C.
How many rainy days does Kortenberg get per year?
Kortenberg sees about 148 rainy days a year, adding up to roughly 827 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Kortenberg?
Between July and January, the temperature gap in Kortenberg runs to about 22.1 °C, based on the 1991–2020 normals.