20.09
sun
sun
Day
90°F
W 9 mph
Precip.
1%
1%
Night
81°F
NW 8 mph
Precip.
13%
13%
21.09
mon
mon
Day
90°F
W 8 mph
Precip.
7%
7%
Night
81°F
NW 6 mph
Precip.
19%
19%
22.09
tue
tue
Day
91°F
NW 8 mph
Precip.
1%
1%
Night
81°F
NW 5 mph
Precip.
21%
21%
23.09
wed
wed
Day
91°F
W 9 mph
Precip.
10%
10%
Night
81°F
NW 7 mph
Precip.
19%
19%
24.09
thu
thu
Day
90°F
W 11 mph
Precip.
2%
2%
Night
81°F
NW 7 mph
Precip.
15%
15%
25.09
fri
fri
Day
90°F
W 7 mph
Precip.
2%
2%
Night
81°F
N 5 mph
Precip.
17%
17%
26.09
sat
sat
Day
91°F
W 6 mph
Precip.
3%
3%
Night
81°F
NW 4 mph
Precip.
8%
8%
sea water
temperature
temperature
| Surabaya |
monthly
weather
weather
| Surabaya |
current
weather
weather
| Surabaya |
14 days
forecast
forecast
| Surabaya |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 82.8°F. The highest and lowest sea temperatures during the month were 83.7°F and 82.0°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 86.8°F. The highest and lowest sea temperatures during the month were 87.6°F and 85.5°F.
Air temperature in Surabaya, °F
Precipitation total in Surabaya, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Surabaya
Surabaya on a weather map
Places in Indonesia:
Name
°F
24 Hours Forecast
Surabaya
Local time: 16:31
September 20, sunday
1800
82°F
W
12 mph
12 mph
2100
81°F
W
11 mph
11 mph
September 21, monday
0000
81°F
NW
8 mph
8 mph
0300
79°F
NW
4 mph
4 mph
0600
79°F
NE
2 mph
2 mph
0900
86°F
NW
6 mph
6 mph
1200
90°F
W
8 mph
8 mph
1500
88°F
W
9 mph
9 mph
