Webknow what's coming with accuweather's extended daily forecasts for surabaya, east java, indonesia. Up to 90 days of daily highs, lows, and precipitation chances. Webget the monthly weather forecast for calendar, id, including daily high/low, historical averages, to help you plan ahead. Webjan 25, 2024 · april weather for surabaya, indonesia: Surabaya, during april nights, records a temperature marginally cooler than the daytime average, at a moderately hot 25. 6°c. Webget the monthly weather forecast for surabaya, east java, indonesia, including daily high/low, historical averages, to help you plan ahead.