Measurements:
°C
°F
Surabaya
80°F
E 5 mph
Feels like: 86°F
Precip: 100%
World Resorts Indonesia Surabaya Weather

Surabaya Sea Water Temperature

Current Sea Water Temperature:
+89.0°F
Maximum Sea Water Temperature in January: 92.4°F
Minimum Sea Water Temperature in January: 84.4°F
Average water temperature in January: 88.4°F

Sea Water Temperature for the Last 10 Days:

January 08 89.0°F January 03 88.8°F
January 07 89.0°F January 02 89.0°F
January 06 89.2°F January 01 89.2°F
January 05 89.0°F December 31 89.4°F
January 04 88.8°F December 30 89.6°F

When is the Warmest Sea for Surabaya?

According to our data for the last three years for Surabaya the highest average sea water temperature was in November, April and December.

Average Water Temperature by Month, °F

Sea Water Temperature in November

Select Year: 2025 2024 2023

The average sea surface temperature in November 2025 for Surabaya was 90.3°F. The maximum and minimum values were 89.6°F and 91.8°F respectively.

Sea Water Temperature in April

Select Year: 2025 2024 2023

The average sea surface temperature in April 2025 for Surabaya was 89.9°F. The maximum and minimum values were 89.0°F and 91.0°F respectively.

Sea Water Temperature in December

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Surabaya was 89.9°F. The maximum and minimum values were 89.0°F and 91.6°F respectively.

Best Time to Visit Surabaya
The most sunny months:
September 26 days
August 26 days
July 24 days
The most warm months:
October 98.7 °F
September 97.7 °F
November 97.0 °F
Warmest sea temperature:
November 90.7 °F
April 90.2 °F
December 89.9 °F
The most cold months:
February 92.3 °F
January 92.5 °F
March 93.9 °F
The most rainy months:
January 18 days
February 16 days
March 16 days
The most windy months:
January 7 mph
September 6 mph
August 6 mph

Surabaya on the Weather Map

Indonesia Resorts:
NAME
Bali +78
Bintan +80
Denpasar +80
Gili +82
Jakarta +86
Jimbaran +84
Kuta +84
Legian +84
Lombok +82
Medan +78
Nusa Dua +84
Padang +76
Sanur +80
Seminyak +84
Yogyakarta +76
24 Hours Weather Forecast
Surabaya
Local time: 01:23
09 jan, friday
0300 80°F
E
6 mph
0600 78°F
E
5 mph
0900 84°F
E
6 mph
1200 92°F
E
7 mph
1500 94°F
E
7 mph
1800 86°F
SE
7 mph
2100 82°F
SE
6 mph
10 jan, saturday
0000 80°F
E
6 mph