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Weather in Grez-Doiceau
Walloon Brabant, 48 m · continuously updated
Beauvechain (5 km) · 9 °C · KMI/IRM 14:00
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Temperature · last 4 and next 28 hours
Grez-Doiceau weather: the next 24 hours
Updated hourly.
Grez-Doiceau 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 Grez-Doiceau
Neighbouring towns, as the crow flies.
Official weather warnings
No active warning for Walloon Brabant.
Updated 15 Nov 13:48.
Is there an active weather warning for Grez-Doiceau?
No active warning for Walloon Brabant.
Latest RMI observation near Grez-Doiceau
Measured at Beauvechain, 5 km from Grez-Doiceau: situation as of 15 November 2026, 14:00. Beauvechain 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 | 9.3 °C |
| Wind | 29 km/h S |
| Gusts | 47 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 Grez-Doiceau
The weather station nearest to Grez-Doiceau, Beauvechain located 127 m above sea level, is 18 km away; its records cover 1954–2013. In November, the mean temperature there is 6.8 °C over 1991–2020, 1.1 °C more than over 1961–1990 (5.7 °C), with about – mm of rain. The warmest month ever measured is July 2006 (22.3 °C), the coldest February 1956 (−7.2 °C). See the full series of Beauvechain
Today in Grez-Doiceau
- 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 (2.8 mm, up to 94 % 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 4.4 °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: 24.9 mm of rain expected within 48 h, against a need of 1 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 Grez-Doiceau
Today (Sunday 15 Nov) in Grez-Doiceau: light rain, 1 to 10 °C, precipitation 4.1 mm (94 %), wind up to 22 km/h. Tomorrow: light rain, 2 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | light rain | 1 °C | 10 °C | 4.1 mm | 22 km/h |
| Tomorrow | light rain | 2 °C | 9 °C | 3.1 mm | 33 km/h |
| Tue 17 Nov | rain | 4 °C | 14 °C | 22.5 mm | 30 km/h |
| Wed 18 Nov | light drizzle | 8 °C | 11 °C | 1.6 mm | 28 km/h |
| Thu 19 Nov | showers | 8 °C | 10 °C | 13.6 mm | 24 km/h |
| Fri 20 Nov | heavy drizzle | 2 °C | 9 °C | 14.2 mm | 17 km/h |
| Sat 21 Nov | partly cloudy | 0 °C | 9 °C | 0.0 mm | 13 km/h |
Tomorrow's weather in Grez-Doiceau
Tomorrow, Monday 16 Nov, in Grez-Doiceau: light rain, from 2 to 9 °C, 3.1 mm of precipitation (probability 64 %), wind up to 33 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  light drizzle | 9 °C | 0.1 mm | 64 % | 13 km/h |
| 03:00 | light drizzle | 9 °C | 0.1 mm | 53 % | 20 km/h |
| 06:00 | light drizzle | 9 °C | 0.3 mm | 49 % | 26 km/h |
| 09:00 |  overcast | 7 °C | 0.0 mm | 38 % | 24 km/h |
| 12:00 | overcast | 7 °C | 0.0 mm | 28 % | 21 km/h |
| 15:00 | overcast | 7 °C | 0.0 mm | 18 % | 18 km/h |
| 18:00 | overcast | 4 °C | 0.0 mm | 15 % | 11 km/h |
| 21:00 | overcast | 3 °C | 0.0 mm | 25 % | 7 km/h |
Frequently asked questions
Will it rain tomorrow in Grez-Doiceau?
Yes: 3.1 mm expected, probability 64 %.
How warm will it be tomorrow in Grez-Doiceau?
Between 2 and 9 °C.
The weekend
Today, Sunday, in Grez-Doiceau: light rain, 1 to 10 °C. Next weekend: Saturday partly cloudy, 0 to 9 °C, Sunday drizzle, 4 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today |  light rain | 1 °C | 10 °C | 4.1 mm | 22 km/h |
| Sat 21 Nov |  partly cloudy | 0 °C | 9 °C | 0.0 mm | 13 km/h |
| Sun 22 Nov | drizzle | 4 °C | 9 °C | 6.0 mm | 26 km/h |
Hour by hour
The next 48 hours in Grez-Doiceau, hour by hour: temperature from 2 to 14 °C, 24.9 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 14:00 | overcast | 9 °C | 0.0 mm | 6 % | 21 km/h |
| 15:00 | overcast | 9 °C | 0.0 mm | 18 % | 22 km/h |
| 16:00 | light drizzle | 9 °C | 0.1 mm | 33 % | 20 km/h |
| 17:00 | drizzle | 9 °C | 0.9 mm | 54 % | 17 km/h |
| 18:00 | drizzle | 10 °C | 0.9 mm | 78 % | 22 km/h |
| 19:00 | light rain | 10 °C | 1.3 mm | 94 % | 17 km/h |
| 20:00 | light drizzle | 10 °C | 0.2 mm | 94 % | 20 km/h |
| 21:00 | light drizzle | 10 °C | 0.4 mm | 85 % | 15 km/h |
| 22:00 | overcast | 10 °C | 0.0 mm | 76 % | 14 km/h |
| 23:00 | overcast | 10 °C | 0.0 mm | 70 % | 15 km/h |
| 00:00 | light drizzle | 9 °C | 0.1 mm | 64 % | 13 km/h |
| 01:00 | overcast | 9 °C | 0.0 mm | 59 % | 13 km/h |
| 02:00 | light drizzle | 9 °C | 0.1 mm | 56 % | 19 km/h |
| 03:00 | light drizzle | 9 °C | 0.1 mm | 53 % | 20 km/h |
| 04:00 | light rain | 9 °C | 1.4 mm | 51 % | 25 km/h |
| 05:00 | drizzle | 9 °C | 0.5 mm | 50 % | 33 km/h |
| 06:00 | light drizzle | 9 °C | 0.3 mm | 49 % | 26 km/h |
| 07:00 | light drizzle | 8 °C | 0.2 mm | 47 % | 26 km/h |
| 08:00 | light drizzle | 8 °C | 0.1 mm | 43 % | 26 km/h |
| 09:00 | overcast | 7 °C | 0.0 mm | 38 % | 24 km/h |
| 10:00 | overcast | 7 °C | 0.0 mm | 33 % | 20 km/h |
| 11:00 | light drizzle | 7 °C | 0.1 mm | 30 % | 21 km/h |
| 12:00 | overcast | 7 °C | 0.0 mm | 28 % | 21 km/h |
| 13:00 | partly cloudy | 8 °C | 0.0 mm | 25 % | 24 km/h |
| 14:00 |  mostly sunny | 8 °C | 0.0 mm | 22 % | 21 km/h |
| 15:00 | overcast | 7 °C | 0.0 mm | 18 % | 18 km/h |
| 16:00 | overcast | 6 °C | 0.0 mm | 16 % | 17 km/h |
| 17:00 | overcast | 6 °C | 0.0 mm | 15 % | 14 km/h |
| 18:00 | overcast | 4 °C | 0.0 mm | 15 % | 11 km/h |
| 19:00 | overcast | 3 °C | 0.0 mm | 16 % | 8 km/h |
| 20:00 | overcast | 2 °C | 0.0 mm | 20 % | 6 km/h |
| 21:00 | overcast | 3 °C | 0.0 mm | 25 % | 7 km/h |
| 22:00 | overcast | 3 °C | 0.0 mm | 31 % | 5 km/h |
| 23:00 | light drizzle | 4 °C | 0.2 mm | 36 % | 7 km/h |
| 00:00 | drizzle | 4 °C | 0.9 mm | 42 % | 7 km/h |
| 01:00 | light rain | 4 °C | 1.7 mm | 47 % | 9 km/h |
| 02:00 | rain | 5 °C | 2.6 mm | 52 % | 13 km/h |
| 03:00 | light rain | 5 °C | 1.7 mm | 58 % | 19 km/h |
| 04:00 | light drizzle | 5 °C | 0.4 mm | 63 % | 19 km/h |
| 05:00 | light drizzle | 5 °C | 0.3 mm | 69 % | 20 km/h |
| 06:00 | light rain | 5 °C | 1.9 mm | 75 % | 20 km/h |
| 07:00 | light rain | 5 °C | 2.2 mm | 80 % | 17 km/h |
| 08:00 | light rain | 6 °C | 1.9 mm | 84 % | 9 km/h |
| 09:00 | rain | 6 °C | 2.6 mm | 88 % | 5 km/h |
| 10:00 | light drizzle | 10 °C | 0.2 mm | 90 % | 17 km/h |
| 11:00 | light drizzle | 13 °C | 0.3 mm | 91 % | 20 km/h |
| 12:00 | drizzle | 14 °C | 0.9 mm | 91 % | 24 km/h |
| 13:00 | light drizzle | 13 °C | 0.4 mm | 90 % | 26 km/h |
Location of Grez-Doiceau
Grez-Doiceau lies at 48 m, 46 m below the average of the 26 places we cover in the province of Walloon Brabant (94 m). That makes it the lowest of the 26. The main town, Wavre, lies 7 km to the south-west. The nearest places we cover are Beauvechain (6 km to the north-east), Chaumont-Gistoux (7 km to the south), Incourt (8 km to the south-east) and Huldenberg (9 km to the north-west). With about 13,668 inhabitants according to GeoNames, Grez-Doiceau is the 10th largest of the 26 places we cover in the province of Walloon Brabant. Of the places of interest on this site, the nearest are Sonian Forest (natural site, 19 km to the west) and Waterloo, Lion’s Mound (sight, 21 km to the west).
Today is close to the November normal (10.3 °C).
Climate of Grez-Doiceau: 1991–2020 normals
In Grez-Doiceau, July is typically the warmest month (up to 23.9 °C on average), while January is the coldest at 1.7 °C. August sees the most rain, with around 95 mm.
By season (average highs, 1991–2020 normals): winter 7.0 °C and 232 mm of rain, spring 15.4 °C and 171 mm, summer 23.1 °C and 255 mm, autumn 15.3 °C and 216 mm. The wettest season is summer (29 % of the annual total), the driest spring (20 %).
| Max T (°C) | Min T (°C) | Rainfall (mm) | Rainy days | |
|---|---|---|---|---|
| January | 6.5 | 1.7 | 76 | 14 |
| February | 7.6 | 1.7 | 66 | 12 |
| March | 11.6 | 3.8 | 58 | 12 |
| April | 15.5 | 6.3 | 50 | 11 |
| May | 19.0 | 9.8 | 63 | 13 |
| June | 21.8 | 12.8 | 75 | 12 |
| July | 23.9 | 14.9 | 85 | 14 |
| August | 23.6 | 14.5 | 95 | 14 |
| September | 20.1 | 11.5 | 70 | 12 |
| October | 15.4 | 8.4 | 72 | 13 |
| November | 10.3 | 4.8 | 74 | 13 |
| December | 6.9 | 2.3 | 90 | 14 |
Compared with Wavre, the main town 7 km to the south-west, highs in the warmest month are 0.1 °C higher here, and the year brings 15 mm more precipitation. In no month does the average low fall below 0 °C; in 4 months the average high exceeds 20 °C (June, July, August and September).
Nearby places with normals of their own (from another station or reanalysis grid cell) compare as follows: Beauvechain (6 km to the north-east): summers 0.3 °C cooler and 2 mm drier a year; Incourt (8 km to the south-east): summers 0.6 °C cooler and 7 mm drier a year; Huldenberg (9 km to the north-west): summers 0.3 °C cooler and 16 mm drier a year. Among the 26 places we cover in the province of Walloon Brabant whose normals come from the ERA5 reanalysis, Grez-Doiceau ranks 1st for summer warmth and 12th for annual precipitation. The warmest summers are in Grez-Doiceau and the coolest in Ramillies; the wettest year is in Walhain and the driest in Rebecq.
What is the warmest month in Grez-Doiceau?
The warmest month in Grez-Doiceau is typically July, averaging 23.9 °C (1991–2020 normal). The coldest is January, at 1.7 °C.
How many rainy days does Grez-Doiceau get per year?
Grez-Doiceau sees about 154 rainy days a year, adding up to roughly 874 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Grez-Doiceau?
Between July and January, the temperature gap in Grez-Doiceau runs to about 22.2 °C, based on the 1991–2020 normals.