Temperature
Hot by day, warm at night.
91°Ftypical Aug high
Surabaya is most comfortable in the drier months around July and August. Typical daytime highs run about 88-94°F year-round. The climate is hot and humid. Rainy season runs roughly November to April.

Hot by day, warm at night.
One of the driest months, with very little rain.
Plenty of sun this month.
Hot days, with humid stretches.
Partly cloudy across the month.
Want a side-by-side climate view? Compare Surabaya with Singapore.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 27, 2026
Data & methodology