The climate in Surabaya during April can be summarized as very hot, humid and wet.
April is in the fall / autumn in Surabaya and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 25°C (77°F) is normal.
|Daytime temperature||32.1°C 89.7°F|
|Nightly temperature||25°C 76.9°F|
|Average temperature||28.5°C 83.3°F|
|Daily sunshine||9.3 hrs|
|Avg rainfall||176 mm 6.9 ins|
|Rainy days||10 days|
|Sea temperature||29.4°C 85°F|
|Windspeed||9kph 6 mph|
On average April is the 5th wettest month of the year in Surabaya with around 176mm 6.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.3 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in April 2019.
|Hottest month:||October||33.3°C 91.9°F|
|Driest month:||August||13mm 0.5ins|
|Coldest month:||July||31.1°C 88°F|
|Wettest month:||January||281mm 11.1ins|