August · Indonesia
Best time to visit Surabaya in August Weather, crowds & prices
Weather in Surabaya in August
Average temperature 27°C, 9 mm of rain, about 25 days with 6+ hours of sunshine and 66% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
8.1/10
Ranked #1 of 12 months
- Avg temp
- 27°C
- Rainfall
- 9 mm
- Humidity
- 66%
- Days with 6h+ sun
- 25
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Surabaya scores 8.1/10 for sightseeing and cultural travel - the single best month of the year. Expect around 27°C, 9 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
Surabaya pairs Indonesia's busiest port with colonial lanes, markets and a shark-and-crocodile landmark.
August in Surabaya tops the year's climate scores
August averages 27°C (81°F), so the practical pattern is early mornings, a long midday break, and evenings back outside.
Rain is a non-issue at 9 mm for the month, with about 25 days with 6+ hours of sunshine and 11.8 hours of daylight to work with.
On our climate-comfort scale this is the top-ranked month of the year for Surabaya at 8.1/10 — the reference point every other month on this page is measured against.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Surabaya in August?
- In August, Surabaya averages 27°C, 9 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 8.1/10.
- Is August a good time to visit Surabaya?
- August earns a 8.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Surabaya in August?
- Expect about 9 mm of rain in August. Average humidity is 66% and there are about 25 days with 6+ hours of sunshine.
Curated in Surabaya
Tickets & experiences
Things to do in Surabaya
Surabaya, Indonesia. Live activities and tours from GetYourGuide, matched to this destination.