Aalst monthly weather forecast

Monthly weather forecast for Aalst. ℃ Average temperatures % Humidity, precipitation ️ Sunrise and sunset ️ Wind direction and speed

22 May 2026, Friday
+11°C / +26°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+14°C
5.8
75%
1026
01:00
+13°C
6.1
79%
1026
02:00
+13°C
6.8
81%
1026
03:00
+12°C
7.6
81%
1026
04:00
+12°C
7.9
83%
1026
05:00
+11°C
4
84%
1026
06:00
+11°C
3.6
83%
1026
07:00
+12°C
7.2
81%
1026
08:00
+16°C
7.9
74%
1026
09:00
+18°C
4.7
69%
1026
10:00
+20°C
7.9
64%
1026
11:00
+22°C
5.8
59%
1026
12:00
+23°C
6.8
54%
1026
13:00
+24°C
6.1
52%
1026
14:00
+25°C
8.3
49%
1026
15:00
+26°C
7.6
47%
1025
16:00
+26°C
7.6
45%
1025
17:00
+26°C
6.8
43%
1025
18:00
+26°C
7.2
45%
1025
19:00
+26°C
6.5
50%
1025
20:00
+25°C
5.8
56%
1025
21:00
+23°C
5.4
59%
1025
22:00
+21°C
4.7
59%
1025
23:00
+19°C
6.1
69%
1025
23 May 2026, Saturday
+15°C / +29°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+18°C
6.5
77%
1025
01:00
+17°C
8.3
78%
1025
02:00
+17°C
7.6
79%
1025
03:00
+16°C
6.8
82%
1025
04:00
+16°C
7.6
82%
1025
05:00
+15°C
9.7
85%
1025
06:00
+15°C
7.6
84%
1025
07:00
+16°C
7.6
80%
1025
08:00
+19°C
7.2
73%
1026
09:00
+21°C
8.6
66%
1026
10:00
+23°C
8.3
62%
1026
11:00
+25°C
7.6
58%
1026
12:00
+26°C
7.2
54%
1027
13:00
+27°C
6.8
51%
1027
14:00
+28°C
7.2
49%
1027
15:00
+29°C
7.6
48%
1027
16:00
+29°C
7.6
47%
1026
17:00
+29°C
6.1
44%
1026
18:00
+29°C
5.4
45%
1026
19:00
+29°C
4.3
49%
1026
20:00
+28°C
7.6
56%
1026
21:00
+26°C
7.6
62%
1026
22:00
+24°C
5.4
63%
1027
23:00
+22°C
8.3
77%
1027
24 May 2026, Sunday
+19°C / +31°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+21°C
4.7
82%
1027
01:00
+20°C
6.1
85%
1028
02:00
+19°C
4.3
84%
1028
03:00
+19°C
2.5
83%
1028
04:00
+19°C
2.5
83%
1028
05:00
+19°C
3.6
83%
1028
06:00
+19°C
3.6
84%
1028
07:00
+20°C
5
82%
1028
08:00
+22°C
2.9
76%
1029
09:00
+24°C
2.9
70%
1029
10:00
+26°C
2.5
63%
1029
11:00
+27°C
3.2
57%
1029
12:00
+29°C
5.8
50%
1029
13:00
+29°C
8.6
47%
1029
14:00
+30°C
7.9
45%
1029
15:00
+31°C
6.8
43%
1029
16:00
+31°C
6.5
43%
1029
17:00
+31°C
6.5
42%
1028
18:00
+30°C
14.4
52%
1028
19:00
+29°C
12.6
57%
1028
20:00
+27°C
11.9
63%
1028
21:00
+26°C
11.5
70%
1028
22:00
+24°C
10.8
72%
1028
23:00
+22°C
9.2
78%
1029
25 May 2026, Monday
+17°C / +27°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+21°C
9.1
81%
1029
01:00
+20°C
9.9
84%
1029
02:00
+20°C
8.7
85%
1029
03:00
+19°C
7.8
86%
1029
04:00
+18°C
7.1
87%
1029
05:00
+17°C
6.7
89%
1029
06:00
+17°C
7.2
90%
1029
07:00
+17°C
7.6
89%
1029
08:00
+19°C
5.1
86%
1030
09:00
+21°C
4.2
81%
1030
10:00
+23°C
4
76%
1030
11:00
+24°C
5
67%
1030
12:00
+26°C
6.4
59%
1030
13:00
+26°C
6.6
58%
1030
14:00
+27°C
6.4
55%
1030
15:00
+27°C
6.5
51%
1029
16:00
+27°C
6.8
48%
1029
17:00
+27°C
7.3
48%
1029
18:00
+27°C
7.1
49%
1028
19:00
+27°C
6.9
51%
1028
20:00
+26°C
7.2
61%
1028
21:00
+24°C
9.9
71%
1028
22:00
+23°C
9.8
81%
1028
23:00
+22°C
9.7
78%
1028
26 May 2026, Tuesday
+17°C / +28°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+21°C
9.2
75%
1028
01:00
+20°C
7.5
79%
1028
02:00
+19°C
6.9
82%
1028
03:00
+18°C
6.1
83%
1028
04:00
+17°C
5.4
84%
1027
05:00
+17°C
4.9
85%
1027
06:00
+17°C
4.5
85%
1027
07:00
+18°C
3.8
84%
1027
08:00
+19°C
3
81%
1027
09:00
+21°C
2.2
74%
1027
10:00
+23°C
2.6
66%
1027
11:00
+25°C
4
59%
1027
12:00
+26°C
5.6
53%
1027
13:00
+27°C
7.5
46%
1027
14:00
+28°C
8.9
43%
1026
15:00
+28°C
9.8
43%
1026
16:00
+28°C
10.4
44%
1025
17:00
+28°C
11.3
47%
1025
18:00
+27°C
12.4
51%
1024
19:00
+25°C
14
58%
1024
20:00
+23°C
15.2
63%
1024
21:00
+21°C
15.5
68%
1025
22:00
+20°C
15.4
72%
1025
23:00
+18°C
14.9
75%
1026
27 May 2026, Wednesday
+12°C / +21°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+17°C
14.4
78%
1026
01:00
+16°C
14.3
79%
1026
02:00
+15°C
14.6
81%
1026
03:00
+14°C
14.8
82%
1026
04:00
+13°C
14.5
83%
1026
05:00
+13°C
14.3
83%
1026
06:00
+12°C
14.3
81%
1027
07:00
+12°C
14.4
78%
1027
08:00
+12°C
14.5
74%
1027
09:00
+13°C
14.4
70%
1027
10:00
+14°C
14.3
65%
1027
11:00
+16°C
14
59%
1027
12:00
+17°C
13.6
54%
1027
13:00
+18°C
13.3
48%
1027
14:00
+20°C
12.9
44%
1027
15:00
+20°C
12.5
42%
1026
16:00
+21°C
12
40%
1026
17:00
+21°C
11.7
39%
1025
18:00
+21°C
11.8
41%
1025
19:00
+21°C
12.3
44%
1024
20:00
+20°C
12.7
48%
1024
21:00
+19°C
13
53%
1024
22:00
+17°C
13.2
59%
1024
23:00
+16°C
13.1
64%
1025
28 May 2026, Thursday
+11°C / +19°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+15°C
12.8
69%
1025
01:00
+14°C
12.2
73%
1024
02:00
+13°C
11.8
76%
1024
03:00
+12°C
11.6
78%
1024
04:00
+12°C
11.6
77%
1024
05:00
+11°C
11.4
77%
1024
06:00
+11°C
10.5
75%
1024
07:00
+12°C
9.2
73%
1024
08:00
+12°C
8.3
72%
1024
09:00
+12°C
7.3
77%
1026
10:00
+13°C
6.9
68%
1025
11:00
+15°C
6.8
59%
1025
12:00
+17°C
6.8
51%
1025
13:00
+18°C
7
45%
1025
14:00
+19°C
7.3
42%
1025
15:00
+19°C
7.9
42%
1025
16:00
+19°C
8.8
44%
1024
17:00
+19°C
9.7
46%
1024
18:00
+19°C
11
50%
1024
19:00
+18°C
11.7
54%
1023
20:00
+18°C
12.1
58%
1023
21:00
+17°C
11.9
62%
1023
22:00
+16°C
11.3
66%
1023
23:00
+15°C
10.6
71%
1024
29 May 2026, Friday
+11°C / +24°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+14°C
10
76%
1024
01:00
+13°C
9.5
80%
1024
02:00
+12°C
9.2
84%
1024
03:00
+12°C
8.7
86%
1025
04:00
+11°C
7.9
88%
1025
05:00
+11°C
7.1
88%
1025
06:00
+11°C
6.1
88%
1025
07:00
+12°C
5.5
85%
1025
08:00
+12°C
5.1
82%
1025
09:00
+13°C
4.8
75%
1025
10:00
+15°C
4.8
67%
1025
11:00
+17°C
4.8
59%
1025
12:00
+19°C
4.7
52%
1025
13:00
+21°C
4.8
46%
1025
14:00
+22°C
4.8
43%
1025
15:00
+23°C
4.9
42%
1025
16:00
+23°C
4.8
41%
1024
17:00
+24°C
5.3
41%
1024
18:00
+24°C
5.7
41%
1024
19:00
+24°C
6
42%
1023
20:00
+23°C
6.2
44%
1023
21:00
+22°C
6.1
46%
1023
22:00
+21°C
6.2
50%
1023
23:00
+20°C
6.6
55%
1023
30 May 2026, Saturday
+15°C / +25°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+19°C
7.3
60%
1023
01:00
+17°C
7.9
65%
1023
02:00
+17°C
8.2
69%
1023
03:00
+16°C
8
72%
1023
04:00
+16°C
7.5
75%
1023
05:00
+15°C
6.6
76%
1023
06:00
+15°C
5.6
77%
1022
07:00
+16°C
4.8
77%
1022
08:00
+16°C
4.4
74%
1022
09:00
+17°C
4.3
69%
1022
10:00
+19°C
4.5
62%
1022
11:00
+21°C
4.7
54%
1022
12:00
+22°C
5
48%
1022
13:00
+24°C
5.5
43%
1021
14:00
+25°C
6.1
40%
1021
15:00
+25°C
6.9
40%
1021
16:00
+25°C
8.4
40%
1020
17:00
+25°C
10.2
42%
1020
18:00
+24°C
12.1
44%
1019
19:00
+23°C
13.3
47%
1019
20:00
+22°C
13.9
49%
1019
21:00
+22°C
13.4
52%
1019
22:00
+21°C
12.5
55%
1018
23:00
+20°C
11.8
59%
1018
31 May 2026, Sunday
+16°C / +27°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+19°C
11.2
62%
1018
01:00
+18°C
11.4
66%
1018
02:00
+17°C
11.7
68%
1018
03:00
+17°C
11.7
71%
1018
04:00
+16°C
11.6
74%
1018
05:00
+16°C
11
77%
1018
06:00
+16°C
10.5
78%
1018
07:00
+16°C
9.9
77%
1018
08:00
+17°C
9.4
75%
1018
09:00
+18°C
9
69%
1018
10:00
+19°C
8.4
61%
1017
11:00
+21°C
8
53%
1017
12:00
+23°C
7.8
46%
1017
13:00
+25°C
7.6
40%
1016
14:00
+26°C
7.4
37%
1016
15:00
+27°C
7.3
35%
1016
16:00
+27°C
7.1
35%
1015
17:00
+27°C
6.8
34%
1015
18:00
+27°C
6.7
34%
1015
19:00
+27°C
6.8
35%
1014
20:00
+27°C
7
36%
1014
21:00
+26°C
7.7
37%
1014
22:00
+25°C
8.7
40%
1014
23:00
+23°C
9.9
43%
1014
01 June 2026, Monday
+19°C / +31°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+22°C
11
47%
1014
01:00
+21°C
11.7
50%
1014
02:00
+20°C
12.1
53%
1014
03:00
+19°C
11.9
55%
1014
04:00
+19°C
11.2
58%
1014
05:00
+19°C
10.5
60%
1014
06:00
+19°C
9.5
61%
1013
07:00
+19°C
8.7
61%
1013
08:00
+20°C
8.3
60%
1013
09:00
+21°C
8.6
56%
1012
10:00
+23°C
9.5
50%
1012
11:00
+26°C
11.2
44%
1012
12:00
+28°C
13.3
39%
1011
13:00
+30°C
14.8
36%
1011
14:00
+31°C
15.2
35%
1011
15:00
+31°C
14.2
36%
1010
16:00
+30°C
11.9
39%
1010
17:00
+29°C
9.3
44%
1010
18:00
+28°C
7.3
50%
1010
19:00
+26°C
6.4
56%
1010
20:00
+25°C
6.2
61%
1010
21:00
+25°C
6.1
64%
1009
22:00
+24°C
6.5
65%
1009
23:00
+24°C
7.9
66%
1008
02 June 2026, Tuesday
+15°C / +24°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+24°C
10.2
67%
1008
01:00
+23°C
12.5
68%
1007
02:00
+23°C
14.2
69%
1007
03:00
+22°C
15.2
73%
1007
04:00
+21°C
15.8
77%
1007
05:00
+21°C
16.4
82%
1007
06:00
+20°C
16.9
87%
1007
07:00
+19°C
17.5
92%
1007
08:00
+19°C
18
94%
1007
09:00
+19°C
18.5
92%
1007
10:00
+19°C
19.1
88%
1007
11:00
+20°C
19.5
83%
1007
12:00
+20°C
19.7
78%
1007
13:00
+21°C
19.9
75%
1007
14:00
+21°C
19.6
73%
1007
15:00
+20°C
18.7
74%
1007
16:00
+20°C
17.5
76%
1007
17:00
+19°C
15.8
79%
1007
18:00
+18°C
14.3
83%
1007
19:00
+18°C
13
87%
1007
20:00
+17°C
12.2
89%
1008
21:00
+16°C
11.8
90%
1008
22:00
+16°C
11.8
90%
1008
23:00
+15°C
11.9
90%
1009
03 June 2026, Wednesday
+13°C / +17°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+15°C
12.1
89%
1009
01:00
+14°C
12.5
88%
1010
02:00
+14°C
13.1
87%
1010
03:00
+14°C
13.9
86%
1010
04:00
+13°C
15
85%
1010
05:00
+13°C
16.3
84%
1011
06:00
+13°C
17.5
82%
1011
07:00
+14°C
18.7
81%
1011
08:00
+14°C
19.3
79%
1011
09:00
+14°C
19.6
77%
1011
10:00
+15°C
19.6
74%
1011
11:00
+15°C
19.6
71%
1011
12:00
+16°C
19.2
68%
1011
13:00
+16°C
19.1
66%
1011
14:00
+17°C
18.8
65%
1011
15:00
+17°C
18.3
65%
1011
16:00
+17°C
17.7
65%
1011
17:00
+17°C
17
66%
1011
18:00
+17°C
16.2
67%
1011
19:00
+16°C
15.5
68%
1011
20:00
+16°C
14.9
69%
1011
21:00
+16°C
14.4
70%
1011
22:00
+15°C
14.2
72%
1011
23:00
+15°C
13.9
73%
1012
04 June 2026, Thursday
+13°C / +20°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+14°C
13.7
74%
1012
01:00
+14°C
13.4
76%
1012
02:00
+13°C
13
76%
1012
03:00
+13°C
12.3
77%
1012
04:00
+13°C
11.4
78%
1012
05:00
+13°C
10.5
79%
1012
06:00
+13°C
9.5
79%
1013
07:00
+13°C
8.9
79%
1013
08:00
+14°C
8.6
77%
1013
09:00
+14°C
8.8
73%
1013
10:00
+15°C
9.6
68%
1013
11:00
+16°C
10.6
62%
1013
12:00
+17°C
11.6
57%
1013
13:00
+18°C
12.2
53%
1013
14:00
+19°C
12.1
51%
1012
15:00
+19°C
11.3
50%
1012
16:00
+19°C
10.2
50%
1012
17:00
+20°C
8.9
50%
1012
18:00
+19°C
7.7
51%
1012
19:00
+19°C
6.5
53%
1012
20:00
+19°C
5.5
55%
1012
21:00
+18°C
4.1
59%
1012
22:00
+17°C
2.8
64%
1012
23:00
+16°C
3.4
71%
1013


Climate Characteristics of Aalst

General Overview

Aalst enjoys a temperate oceanic climate (Cfb per the Köppen classification), typical of central Belgium. The city's weather is influenced by its relative proximity to the North Sea, resulting in mild temperatures throughout the year and precipitation spread fairly evenly across seasons. Cloud cover is high and rain can occur at any time, keeping the agricultural surroundings of the city green and fertile.

Summer Season and Warm Months

Summer in Aalst is pleasant and very comfortable. Average daytime temperatures range between 22°C and 23°C (72-73°F), making it an ideal time for walking tours in the historic city center. Although days are mostly sunny, short summer showers are a common sight, and occasionally short heatwaves strike the area, pushing temperatures above 30°C (86°F).

Winter Season and Precipitation

Winter in Aalst is cool, grey, and humid. Daytime temperatures range around 6°C (43°F), with nighttime lows near 1°C (34°F). Snow is not very common and usually melts quickly, while rain and fog are central features of the season. Westerly winds from the ocean can increase the wind chill on clear days.

Transition Seasons and Special Phenomena

The transition seasons in Aalst are characterized by frequent weather changes. Spring brings gradual warming but is very volatile, while autumn features a decrease in sunshine hours and beautiful foliage along the banks of the Dender River. February is sometimes known for particularly stormy weather, coinciding with the famous Aalst Carnival.

 

Weather in Aalst by Month

January

The coldest month. Temperatures around 6°C (43°F) during the day and 1°C (34°F) at night. Most days are cloudy and rainy.

February

The weather remains cold with a daytime average of 7°C (45°F). Strong winds and rain are possible, but days are starting to lengthen.

March

Spring arrives with daytime temperatures of about 11°C (52°F). Volatile weather – sunny moments alongside cold rain showers.

April

Temperatures climb to 15°C (59°F). Blossoms are seen throughout the city and the atmosphere becomes more pleasant.

May

A very pleasant month with an average temperature of 19°C (66°F). Days are long and bright, and nature is at peak bloom.

June

Summer begins with an average of 21°C (70°F) during the day. Daylight hours are very long and evenings are pleasant.

July

The warmest month (average 23°C/73°F daytime). Comfortable weather that usually does not become oppressive.

August

Similar to July with 23°C (73°F) during the day. Brief afternoon thunderstorms may occur.

September

Temperatures drop to an average of 20°C (68°F). The air is very pleasant and foliage begins to appear.

October

Autumn is felt with 15°C (59°F) during the day. A wetter and cooler month, but the city is beautiful in its autumnal hues.

November

A grey and cool month with 10°C (50°F) during the day. Sunshine hours decrease significantly and rain is frequent.

December

Winter returns with 6°C (43°F) during the day. Christmas markets and lights add warmth to the short, humid days.

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