Surabaya monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Surabaya

Surabaya average temperature chart (Celsius) Surabaya average temperature chart (Fahrenheit)
Average monthly temperatures in Surabaya (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 31 31.2 31.4 31.9 31.7 31.2 31.1 31.5 32.3 33.3 33 31.8
°F 87.9 88.2 88.5 89.4 89 88.2 87.9 88.6 90.2 91.9 91.3 89.2

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Surabaya monthly rainfall chart (mm) Surabaya monthly rainfall chart (inches)
Average monthly rainfall in Surabaya (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 281 250 267 176 122 62 22 13 20 49 120 216
inches 11.1 9.9 10.5 6.9 4.8 2.4 0.9 0.5 0.8 1.9 4.7 8.5
Rainy days 17 17 15 10 7 6 2 1 1 2 4 14

Average annual rainfall in Surabaya: 1701.9mm (670 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Surabaya

Surabaya average daily sunshine chart
Average daily sunshine Surabaya
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.4 7.6 7.8 9.3 9.5 10.1 11.2 11.7 11.4 10.7 9.2 7.9

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Surabaya average minimum / maximum temperatures (Celsius) Surabaya average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Surabaya (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 24.6 24.6 24.7 25 24.8 24 23.2 23.4 23.9 24.9 25.3 24.9
Max °C 31.2 31.4 31.6 32.1 31.9 31.4 31.3 31.7 32.6 33.5 33.2 32
Min °F 76.3 76.3 76.4 76.9 76.6 75.2 73.7 74 74.9 76.8 77.5 76.7
Max °F 82.2 82.4 82.6 83.3 82.9 81.9 81 81.5 82.8 84.6 84.6 83.1

Sea temperature

The graph below shows the average sea temperature.

Surabaya average sea temperature chart (Celsius) Surabaya average sea temperature chart (Fahrenheit)
Average sea temperature around Surabaya in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 29.1 28.9 29.2 29.4 29.2 28.5 27.6 27.1 27.3 28.2 29.2 29.3
°F 84.3 84 84.5 85 84.5 83.2 81.6 80.7 81.1 82.7 84.5 84.7

Wind speed

The graph below shows the average wind speed.

Surabaya average winspeed by month (km/h) Surabaya average winspeed by month (mph)
Average wind speed in Surabaya (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 13 12 11 9 10 11 12 14 13 12 10 10
mph 8 8 7 6 6 7 8 9 8 7 7 7

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Surabaya relative humidity averages
Average relative humidity in Surabaya
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
82% 83% 83% 80% 79% 76% 74% 71% 69% 68% 72% 79%

Other monthly averages

UV index Best time to go?

Surabaya weather stats

Surabaya weather statistics
Hottest month: October 33.3°C 91.9°F
Driest month: August 13mm 0.5ins
Sunniest month: August 11.7hrs
Coldest month: July 31.1°C 88°F
Wettest month: January 281mm 11.1ins
Warmest sea: April 29.4°C 84.9°F
Map showing location of Surabaya (-7.24917, 112.75083) Surabaya map pin © Google

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