Measurements:
°C
°F
Surabaya
90°F
NW 14 mph
Feels like: 96°F
Precip: 3%
World Resorts Indonesia Surabaya Weather

Surabaya Sea Water Temperature

Current Sea Water Temperature:
+85.2°F
Maximum Sea Water Temperature in August: 89.0°F
Minimum Sea Water Temperature in August: 83.8°F
Average water temperature in August: 86.5°F

Sea Water Temperature for the Last 10 Days:

August 02 85.2°F July 28 84.8°F
August 01 85.4°F July 27 84.8°F
July 31 85.6°F July 26 84.8°F
July 30 85.2°F July 25 85.0°F
July 29 85.0°F July 24 86.0°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: 2026 2025 2024

The average sea surface temperature in April 2026 for Surabaya was 90.5°F. The maximum and minimum values were 89.0°F and 91.2°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 92.1 °F
January 92.3 °F
March 93.7 °F
The most rainy months:
January 17 days
February 16 days
March 16 days
The most windy months:
January 7 mph
September 6 mph
February 6 mph

Surabaya on the Weather Map

Indonesia Resorts:
NAME
Bali +86
Batam +92
Bintan +90
Denpasar +84
Gili +86
Jakarta +94
Jimbaran +82
Kuta +82
Legian +82
Lombok +82
Nusa Dua +82
Padang +86
Sanur +84
Seminyak +82
Yogyakarta +88
24 Hours Weather Forecast
Surabaya
Local time: 15:15
02 aug, sunday
1800 84°F
NW
12 mph
2100 84°F
W
11 mph
03 aug, monday
0000 82°F
W
9 mph
0300 82°F
NW
8 mph
0600 82°F
NW
9 mph
0900 88°F
W
12 mph
1200 92°F
NW
13 mph
1500 90°F
NW
12 mph