Current sea water temperature:
+83.1°F
| Minimum sea water temperature in September: | 86.7°F |
| Maximum sea water temperature in September: | 81.5°F |
| Average sea water temperature in September: | 83.7°F |
| more information | |
14 days
forecast
forecast
| Surabaya |
monthly
weather
weather
| Surabaya |
Sea water temperature for the last 10 days:
| September 17 | 83.1°F | September 12 | 83.1°F |
| September 16 | 83.3°F | September 11 | 82.9°F |
| September 15 | 83.3°F | September 10 | 82.6°F |
| September 14 | 83.3°F | September 9 | 82.8°F |
| September 13 | 83.7°F | September 8 | 82.2°F |
Monthly sea water temperature, °F
When is the warmest sea in Surabaya?
Based on the data about daily sea water temperature for the last three years the warmest sea in Surabaya was noticed in November, April and December.
Monthly Sea Temperatures in Surabaya, °F
Sea water temperature in November, °F
Show year:
2025
2024
2023
The average sea water temperature in November of 2025 was 86.2°F. The highest and lowest sea temperatures during the month were 87.6°F and 85.6°F.
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 86.5°F. The highest and lowest sea temperatures during the month were 87.1°F and 85.1°F.
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 85.9°F. The highest and lowest sea temperatures during the month were 87.4°F and 85.1°F.
current
weather
weather
| Surabaya |
weather in
September
September
| Surabaya |
Best time for vacation in Surabaya
Surabaya on a weather map
Places in Indonesia:
Name
°F
24 Hours Forecast
Surabaya
Local time: 03:30
September 18, friday
0600
79°F
W
5 mph
5 mph
0900
86°F
W
6 mph
6 mph
1200
90°F
W
7 mph
7 mph
1500
88°F
W
7 mph
7 mph
1800
82°F
W
11 mph
11 mph
2100
81°F
W
9 mph
9 mph
September 19, saturday
0000
81°F
NW
7 mph
7 mph
0300
79°F
NW
6 mph
6 mph
