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Weather in Aalter
East Flanders, 15 m · continuously updated
Semmerzake (22 km) · 9 °C · KMI/IRM 14:00
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Temperature · last 4 and next 28 hours
Aalter weather: the next 24 hours
Updated hourly.
Aalter 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 Aalter
Neighbouring towns, as the crow flies.
Official weather warnings
No active warning for East Flanders.
Updated 15 Nov 13:48.
Is there an active weather warning for Aalter?
No active warning for East Flanders.
Latest RMI observation near Aalter
Measured at Semmerzake, 22 km from Aalter: situation as of 15 November 2026, 14:00. Semmerzake 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 | 8.8 °C |
| Wind | 18 km/h S |
| Gusts | 36 km/h |
| Rain, last hour | — |
| Humidity | — |
| Pressure | 1002 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 Aalter
The weather station nearest to Aalter, Eeklo located 8 m above sea level, is 14 km away; its records cover 1954–2004. The warmest month ever measured is July 2006 (22.6 °C), the coldest February 1956 (−5.4 °C). See the full series of Eeklo
Today in Aalter
- 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 (0 mm, up to 84 % chance). Have some shelter or a plan B ready. How it is calculated
- Best time to air the house: tomorrow, between 12:00 and 14:00. The outdoor dew point drops to 3.9 °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: 27.9 mm of rain expected within 48 h, against a need of 0.8 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 Aalter
Today (Sunday 15 Nov) in Aalter: light rain, 0 to 9 °C, precipitation 2.5 mm (84 %), wind up to 23 km/h. Tomorrow: rain, 2 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | light rain | 0 °C | 9 °C | 2.5 mm | 23 km/h |
| Tomorrow | rain | 2 °C | 9 °C | 7.5 mm | 24 km/h |
| Tue 17 Nov | rain | 3 °C | 14 °C | 18.9 mm | 44 km/h |
| Wed 18 Nov | showers | 8 °C | 11 °C | 8.9 mm | 24 km/h |
| Thu 19 Nov | showers | 7 °C | 11 °C | 10.3 mm | 20 km/h |
| Fri 20 Nov | showers | 3 °C | 7 °C | 11.2 mm | 17 km/h |
| Sat 21 Nov | overcast | 2 °C | 10 °C | 0.0 mm | 14 km/h |
Tomorrow's weather in Aalter
Tomorrow, Monday 16 Nov, in Aalter: rain, from 2 to 9 °C, 7.5 mm of precipitation (probability 51 %), wind up to 24 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  drizzle | 9 °C | 0.6 mm | 51 % | 16 km/h |
| 03:00 |  rain | 8 °C | 4.0 mm | 48 % | 17 km/h |
| 06:00 | light drizzle | 8 °C | 0.1 mm | 48 % | 19 km/h |
| 09:00 | light drizzle | 7 °C | 0.1 mm | 34 % | 19 km/h |
| 12:00 |  partly cloudy | 7 °C | 0.0 mm | 13 % | 23 km/h |
| 15:00 |  mostly sunny | 6 °C | 0.0 mm | 8 % | 17 km/h |
| 18:00 |  overcast | 3 °C | 0.0 mm | 14 % | 12 km/h |
| 21:00 | overcast | 3 °C | 0.0 mm | 29 % | 9 km/h |
Frequently asked questions
Will it rain tomorrow in Aalter?
Yes: 7.5 mm expected, probability 51 %.
How warm will it be tomorrow in Aalter?
Between 2 and 9 °C.
The weekend
Today, Sunday, in Aalter: light rain, 0 to 9 °C. Next weekend: Saturday overcast, 2 to 10 °C, Sunday drizzle, 5 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | light rain | 0 °C | 9 °C | 2.5 mm | 23 km/h |
| Sat 21 Nov | overcast | 2 °C | 10 °C | 0.0 mm | 14 km/h |
| Sun 22 Nov | drizzle | 5 °C | 9 °C | 5.2 mm | 22 km/h |
Hour by hour
The next 48 hours in Aalter, hour by hour: temperature from 2 to 14 °C, 27.9 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 14:00 | overcast | 7 °C | 0.0 mm | 24 % | 19 km/h |
| 15:00 | light drizzle | 8 °C | 0.2 mm | 52 % | 23 km/h |
| 16:00 | light rain | 9 °C | 1.6 mm | 73 % | 22 km/h |
| 17:00 | drizzle | 9 °C | 0.6 mm | 82 % | 20 km/h |
| 18:00 | overcast | 9 °C | 0.0 mm | 84 % | 19 km/h |
| 19:00 | overcast | 9 °C | 0.0 mm | 82 % | 15 km/h |
| 20:00 | overcast | 8 °C | 0.0 mm | 75 % | 14 km/h |
| 21:00 | overcast | 8 °C | 0.0 mm | 64 % | 14 km/h |
| 22:00 | overcast | 8 °C | 0.0 mm | 55 % | 16 km/h |
| 23:00 | light drizzle | 9 °C | 0.1 mm | 52 % | 14 km/h |
| 00:00 | drizzle | 9 °C | 0.6 mm | 51 % | 16 km/h |
| 01:00 | light drizzle | 9 °C | 0.2 mm | 51 % | 16 km/h |
| 02:00 | light drizzle | 8 °C | 0.3 mm | 50 % | 14 km/h |
| 03:00 | rain | 8 °C | 4.0 mm | 48 % | 17 km/h |
| 04:00 | heavy drizzle | 8 °C | 1.2 mm | 47 % | 20 km/h |
| 05:00 | drizzle | 8 °C | 0.6 mm | 47 % | 17 km/h |
| 06:00 | light drizzle | 8 °C | 0.1 mm | 48 % | 19 km/h |
| 07:00 | overcast | 8 °C | 0.0 mm | 47 % | 24 km/h |
| 08:00 | light drizzle | 7 °C | 0.1 mm | 42 % | 18 km/h |
| 09:00 | light drizzle | 7 °C | 0.1 mm | 34 % | 19 km/h |
| 10:00 | light drizzle | 7 °C | 0.2 mm | 27 % | 22 km/h |
| 11:00 | light drizzle | 7 °C | 0.1 mm | 20 % | 22 km/h |
| 12:00 | partly cloudy | 7 °C | 0.0 mm | 13 % | 23 km/h |
| 13:00 | mostly sunny | 7 °C | 0.0 mm | 8 % | 21 km/h |
| 14:00 | overcast | 7 °C | 0.0 mm | 7 % | 20 km/h |
| 15:00 | mostly sunny | 6 °C | 0.0 mm | 8 % | 17 km/h |
| 16:00 | sunny | 6 °C | 0.0 mm | 10 % | 13 km/h |
| 17:00 | overcast | 4 °C | 0.0 mm | 12 % | 14 km/h |
| 18:00 | overcast | 3 °C | 0.0 mm | 14 % | 12 km/h |
| 19:00 | overcast | 2 °C | 0.0 mm | 18 % | 9 km/h |
| 20:00 | overcast | 2 °C | 0.0 mm | 23 % | 8 km/h |
| 21:00 | overcast | 3 °C | 0.0 mm | 29 % | 9 km/h |
| 22:00 | overcast | 3 °C | 0.0 mm | 35 % | 7 km/h |
| 23:00 | overcast | 3 °C | 0.0 mm | 39 % | 8 km/h |
| 00:00 | drizzle | 3 °C | 0.6 mm | 42 % | 9 km/h |
| 01:00 | heavy drizzle | 4 °C | 1.2 mm | 47 % | 10 km/h |
| 02:00 | light rain | 4 °C | 1.8 mm | 54 % | 14 km/h |
| 03:00 | heavy drizzle | 4 °C | 1.1 mm | 62 % | 20 km/h |
| 04:00 | rain | 4 °C | 2.7 mm | 69 % | 18 km/h |
| 05:00 | light rain | 4 °C | 2.4 mm | 75 % | 23 km/h |
| 06:00 | rain | 5 °C | 3.9 mm | 80 % | 20 km/h |
| 07:00 | light rain | 5 °C | 2.0 mm | 84 % | 19 km/h |
| 08:00 | light rain | 5 °C | 1.9 mm | 87 % | 13 km/h |
| 09:00 | overcast | 5 °C | 0.0 mm | 89 % | 7 km/h |
| 10:00 | overcast | 6 °C | 0.0 mm | 90 % | 7 km/h |
| 11:00 | light drizzle | 8 °C | 0.3 mm | 89 % | 10 km/h |
| 12:00 | overcast | 12 °C | 0.0 mm | 87 % | 22 km/h |
| 13:00 | overcast | 14 °C | 0.0 mm | 84 % | 24 km/h |
Location of Aalter
Aalter lies at 15 m, 5 m below the average of the 55 places we cover in the province of East Flanders (20 m). That makes it the 23rd highest of the 55. The main town, Ghent, lies 20 km to the east. The nearest places we cover are Wingene (10 km to the west), Deinze (10 km to the south-east), Beernem (11 km to the north-west) and Tielt (12 km to the south-west). With about 28,906 inhabitants according to GeoNames, Aalter is the 12th largest of the 52 places we cover in the province of East Flanders. Of the places of interest on this site, the nearest is The Zwin (seaside resort, 33 km to the north).
Today is close to the November normal (10.1 °C).
Climate of Aalter: 1991–2020 normals
In Aalter, July is typically the warmest month (up to 22.0 °C on average), while February is the coldest at 1.7 °C. August sees the most rain, with around 79 mm.
By season (average highs, 1991–2020 normals): winter 6.8 °C and 190 mm of rain, spring 13.9 °C and 174 mm, summer 21.3 °C and 224 mm, autumn 14.6 °C and 188 mm. The wettest season is summer (29 % of the annual total), the driest spring (22 %).
| Max T (°C) | Min T (°C) | Rainfall (mm) | Rainy days | |
|---|---|---|---|---|
| January | 6.4 | 1.8 | 63 | 12 |
| February | 7.3 | 1.7 | 55 | 11 |
| March | 10.3 | 3.3 | 56 | 12 |
| April | 14.0 | 5.5 | 54 | 12 |
| May | 17.3 | 9.1 | 65 | 12 |
| June | 20.0 | 11.9 | 68 | 11 |
| July | 22.0 | 14.2 | 76 | 12 |
| August | 22.0 | 14.3 | 79 | 12 |
| September | 18.9 | 12.0 | 60 | 11 |
| October | 14.8 | 8.9 | 62 | 12 |
| November | 10.1 | 5.3 | 65 | 13 |
| December | 6.8 | 2.5 | 72 | 13 |
Compared with Ghent, the main town 20 km to the east, highs in the warmest month are 0.8 °C lower here, and the year brings 11 mm less precipitation. In no month does the average low fall below 0 °C; in 2 months the average high exceeds 20 °C (July and August).
Nearby places with normals of their own (from another station or reanalysis grid cell) compare as follows: Wingene (10 km to the west): summers 0.3 °C cooler and 11 mm wetter a year; Deinze (10 km to the south-east): summers 0.6 °C warmer and 17 mm wetter a year; Beernem (11 km to the north-west): summers 0.6 °C cooler and 33 mm drier a year. Among the 55 places we cover in the province of East Flanders whose normals come from the ERA5 reanalysis, Aalter ranks 51st for summer warmth and 48th for annual precipitation. The warmest summers are in Ninove and the coolest in Sint-Laureins; the wettest year is in Ninove and the driest in Maldegem, Eeklo and Sint-Laureins.
What is the warmest month in Aalter?
The warmest month in Aalter is typically July, averaging 22.0 °C (1991–2020 normal). The coldest is February, at 1.7 °C.
How many rainy days does Aalter get per year?
Aalter sees about 143 rainy days a year, adding up to roughly 775 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Aalter?
Between July and February, the temperature gap in Aalter runs to about 20.3 °C, based on the 1991–2020 normals.