Surabaya shows a fairly mild monthly swing: sample heat runs higher around Sep–Oct, Dec, softer around Jul–Sep (monthly sample means about 1.1–1.2). Religious holidays, school breaks and resort-island seasons stack. Index ≈ each hotel’s off-peak baseline—not a live city-wide rate.
January 2026
2 public holidaysFebruary 2026
1 public holidaysMarch 2026
3 public holidaysApril 2026
2 public holidaysMay 2026
4 public holidaysJune 2026
2 public holidaysJuly 2026
No public holidays this month1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
August 2026
2 public holidaysSeptember 2026
No public holidays this month1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
301.3
October 2026
No public holidays this month1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
191.3
20
21
221.3
23
24
25
26
27
28
29
30
31
November 2026
No public holidays this month1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
December 2026
1 public holidaysIndex ≈ 1.0 is each hotel’s sample off-peak baseline; shown when >1.2. Sampled reference, not live city-wide rates