S
M
T
W
T
F
S
28
87°
78°
29
85°
78°
30
87°
78°
31
89°
79°
1
90°
80°
2
88°
80°
3
89°
79°
4
88°
78°
5
87°
77°
6
87°
74°
7
88°
77°
8
87°
77°
9
89°
79°
10
88°
78°
11
87°
79°
12
87°
79°
13
88°
77°
14
89°
80°
15
90°
79°
16
88°
79°
17
87°
78°
18
88°
75°
19
88°
78°
20
85°
77°
21
87°
78°
22
87°
76°
23
87°
75°
24
87°
77°
25
87°
76°
26
86°
74°
27
86°
74°
28
87°
75°
29
87°
76°
30
87°
79°
31
90°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Willemstad
Willemstad's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Willemstad. See also: February | March | April.