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Weather in Overijse
Flemish Brabant, 90 m · continuously updated
Uccle (13 km) · 9 °C · KMI/IRM 14:00
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Temperature · last 4 and next 28 hours
Overijse weather: the next 24 hours
Updated hourly.
Overijse 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 Overijse
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 Overijse?
No active warning for Flemish Brabant.
Latest RMI observation near Overijse
Measured at Uccle, 13 km from Overijse: situation as of 15 November 2026, 14:00. Uccle 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 | 18 km/h S |
| Gusts | 36 km/h |
| Rain, last hour | 0.0 mm |
| Humidity | 86 % |
| 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 Overijse
The weather station nearest to Overijse, Uccle located 104 m above sea level, is 13 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 Overijse
- 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 92 % 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 °C; once warmed to 20 °C, that air holds only 35 % humidity, against 50 % in a typical home: opening the windows dries the house. How it is calculated
- Garden: 24.3 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 Overijse
Today (Sunday 15 Nov) in Overijse: light rain, 0 to 10 °C, precipitation 3.5 mm (92 %), wind up to 19 km/h. Tomorrow: light rain, 2 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | light rain | 0 °C | 10 °C | 3.5 mm | 19 km/h |
| Tomorrow | light rain | 2 °C | 9 °C | 4.1 mm | 26 km/h |
| Tue 17 Nov | rain | 4 °C | 14 °C | 20.7 mm | 35 km/h |
| Wed 18 Nov | drizzle | 8 °C | 11 °C | 1.8 mm | 25 km/h |
| Thu 19 Nov | showers | 8 °C | 9 °C | 15.2 mm | 22 km/h |
| Fri 20 Nov | showers | 2 °C | 8 °C | 14.4 mm | 12 km/h |
| Sat 21 Nov | partly cloudy | 1 °C | 10 °C | 0.0 mm | 11 km/h |
Tomorrow's weather in Overijse
Tomorrow, Monday 16 Nov, in Overijse: light rain, from 2 to 9 °C, 4.1 mm of precipitation (probability 63 %), wind up to 26 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  overcast | 9 °C | 0.0 mm | 63 % | 12 km/h |
| 03:00 |  light drizzle | 9 °C | 0.2 mm | 51 % | 16 km/h |
| 06:00 | light drizzle | 8 °C | 0.3 mm | 48 % | 22 km/h |
| 09:00 | light drizzle | 7 °C | 0.1 mm | 36 % | 19 km/h |
| 12:00 | overcast | 7 °C | 0.0 mm | 26 % | 19 km/h |
| 15:00 |  mostly sunny | 7 °C | 0.0 mm | 18 % | 16 km/h |
| 18:00 | overcast | 4 °C | 0.0 mm | 15 % | 12 km/h |
| 21:00 | overcast | 2 °C | 0.0 mm | 25 % | 4 km/h |
Frequently asked questions
Will it rain tomorrow in Overijse?
Yes: 4.1 mm expected, probability 63 %.
How warm will it be tomorrow in Overijse?
Between 2 and 9 °C.
The weekend
Today, Sunday, in Overijse: light rain, 0 to 10 °C. Next weekend: Saturday partly cloudy, 1 to 10 °C, Sunday heavy drizzle, 4 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today |  light rain | 0 °C | 10 °C | 3.5 mm | 19 km/h |
| Sat 21 Nov |  partly cloudy | 1 °C | 10 °C | 0.0 mm | 11 km/h |
| Sun 22 Nov | heavy drizzle | 4 °C | 9 °C | 9.6 mm | 21 km/h |
Hour by hour
The next 48 hours in Overijse, hour by hour: temperature from 2 to 14 °C, 24.3 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 14:00 | overcast | 8 °C | 0.0 mm | 16 % | 17 km/h |
| 15:00 | overcast | 9 °C | 0.0 mm | 30 % | 19 km/h |
| 16:00 | drizzle | 9 °C | 0.5 mm | 45 % | 18 km/h |
| 17:00 | drizzle | 9 °C | 0.9 mm | 62 % | 16 km/h |
| 18:00 | light rain | 10 °C | 1.3 mm | 81 % | 18 km/h |
| 19:00 | drizzle | 10 °C | 0.6 mm | 92 % | 18 km/h |
| 20:00 | overcast | 10 °C | 0.0 mm | 91 % | 17 km/h |
| 21:00 | overcast | 10 °C | 0.0 mm | 84 % | 17 km/h |
| 22:00 | overcast | 10 °C | 0.0 mm | 76 % | 16 km/h |
| 23:00 | overcast | 9 °C | 0.0 mm | 69 % | 15 km/h |
| 00:00 | overcast | 9 °C | 0.0 mm | 63 % | 12 km/h |
| 01:00 | light drizzle | 9 °C | 0.1 mm | 57 % | 14 km/h |
| 02:00 | light drizzle | 9 °C | 0.2 mm | 53 % | 17 km/h |
| 03:00 | light drizzle | 9 °C | 0.2 mm | 51 % | 16 km/h |
| 04:00 | light rain | 9 °C | 1.9 mm | 49 % | 24 km/h |
| 05:00 | drizzle | 9 °C | 0.6 mm | 48 % | 26 km/h |
| 06:00 | light drizzle | 8 °C | 0.3 mm | 48 % | 22 km/h |
| 07:00 | light drizzle | 8 °C | 0.3 mm | 47 % | 21 km/h |
| 08:00 | light drizzle | 8 °C | 0.2 mm | 42 % | 23 km/h |
| 09:00 | light drizzle | 7 °C | 0.1 mm | 36 % | 19 km/h |
| 10:00 | overcast | 7 °C | 0.0 mm | 31 % | 19 km/h |
| 11:00 | overcast | 7 °C | 0.0 mm | 28 % | 18 km/h |
| 12:00 | overcast | 7 °C | 0.0 mm | 26 % | 19 km/h |
| 13:00 | overcast | 7 °C | 0.0 mm | 24 % | 20 km/h |
| 14:00 | overcast | 7 °C | 0.0 mm | 21 % | 19 km/h |
| 15:00 | mostly sunny | 7 °C | 0.0 mm | 18 % | 16 km/h |
| 16:00 | overcast | 6 °C | 0.0 mm | 16 % | 14 km/h |
| 17:00 | overcast | 5 °C | 0.0 mm | 15 % | 14 km/h |
| 18:00 | overcast | 4 °C | 0.0 mm | 15 % | 12 km/h |
| 19:00 | overcast | 3 °C | 0.0 mm | 16 % | 8 km/h |
| 20:00 | overcast | 3 °C | 0.0 mm | 20 % | 6 km/h |
| 21:00 | overcast | 2 °C | 0.0 mm | 25 % | 4 km/h |
| 22:00 | overcast | 3 °C | 0.0 mm | 31 % | 3 km/h |
| 23:00 | light drizzle | 3 °C | 0.2 mm | 37 % | 4 km/h |
| 00:00 | drizzle | 4 °C | 0.9 mm | 43 % | 4 km/h |
| 01:00 | light rain | 4 °C | 1.9 mm | 49 % | 6 km/h |
| 02:00 | rain | 4 °C | 2.7 mm | 53 % | 10 km/h |
| 03:00 | light rain | 4 °C | 1.7 mm | 57 % | 16 km/h |
| 04:00 | light drizzle | 4 °C | 0.4 mm | 61 % | 17 km/h |
| 05:00 | drizzle | 4 °C | 0.5 mm | 66 % | 16 km/h |
| 06:00 | light rain | 5 °C | 2.1 mm | 72 % | 15 km/h |
| 07:00 | rain | 5 °C | 3.4 mm | 78 % | 12 km/h |
| 08:00 | light rain | 5 °C | 2.0 mm | 84 % | 9 km/h |
| 09:00 | drizzle | 6 °C | 0.7 mm | 89 % | 3 km/h |
| 10:00 | light drizzle | 9 °C | 0.1 mm | 92 % | 14 km/h |
| 11:00 | light drizzle | 13 °C | 0.3 mm | 92 % | 22 km/h |
| 12:00 | light drizzle | 14 °C | 0.1 mm | 90 % | 23 km/h |
| 13:00 | light drizzle | 13 °C | 0.1 mm | 88 % | 28 km/h |
Location of Overijse
Overijse lies at 90 m, 49 m above the average of the 63 places we cover in the province of Flemish Brabant (41 m). That makes it the 4th highest of the 63. The main town, Leuven, lies 16 km to the north-east. The nearest places we cover are Huldenberg (4 km to the north-east), Tervuren (6 km to the north), Hoeilaart (6 km to the west) and Rixensart (6 km to the south). With about 25,403 inhabitants according to GeoNames, Overijse is the 11th largest of the 62 places we cover in the province of Flemish Brabant. Of the places of interest on this site, the nearest are Sonian Forest (natural site, 9 km to the west) and Waterloo, Lion’s Mound (sight, 12 km to the south-west).
Today is close to the November normal (10.0 °C).
Climate of Overijse: 1991–2020 normals
In Overijse, July is typically the warmest month (up to 23.6 °C on average), while January is the coldest at 1.4 °C. August sees the most rain, with around 92 mm.
By season (average highs, 1991–2020 normals): winter 6.7 °C and 230 mm of rain, spring 15.0 °C and 170 mm, summer 22.7 °C and 248 mm, autumn 14.9 °C and 213 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 | 6.2 | 1.4 | 75 | 14 |
| February | 7.3 | 1.4 | 66 | 12 |
| March | 11.2 | 3.5 | 58 | 12 |
| April | 15.2 | 6.0 | 49 | 12 |
| May | 18.7 | 9.5 | 63 | 12 |
| June | 21.4 | 12.5 | 73 | 12 |
| July | 23.6 | 14.6 | 83 | 13 |
| August | 23.2 | 14.1 | 92 | 14 |
| September | 19.8 | 11.2 | 69 | 12 |
| October | 15.0 | 8.1 | 71 | 13 |
| November | 10.0 | 4.5 | 74 | 13 |
| December | 6.6 | 2.0 | 89 | 14 |
Compared with Leuven, the main town 16 km to the north-east, highs in the warmest month are 0.3 °C lower here, and the year brings 20 mm more 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).
The nearest neighbouring places, Huldenberg, Rixensart and Wavre, have almost identical normals. Among the 63 places we cover in the province of Flemish Brabant whose normals come from the ERA5 reanalysis, Overijse ranks 47th for summer warmth and 6th 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 Overijse?
The warmest month in Overijse is typically July, averaging 23.6 °C (1991–2020 normal). The coldest is January, at 1.4 °C.
How many rainy days does Overijse get per year?
Overijse sees about 153 rainy days a year, adding up to roughly 861 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Overijse?
Between July and January, the temperature gap in Overijse runs to about 22.2 °C, based on the 1991–2020 normals.