May · Indonesia
Best time to visit Surabaya in May Weather, crowds & prices
Weather in Surabaya in May
Average temperature 26°C, 113 mm of rain, about 20 days with 6+ hours of sunshine and 85% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
5.1/10
Ranked #6 of 12 months
- Avg temp
- 26°C
- Rainfall
- 113 mm
- Humidity
- 85%
- Days with 6h+ sun
- 20
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
May in Surabaya scores 5.1/10 for sightseeing and cultural travel - an above-average month (#6 of 12). Expect around 26°C, 113 mm of rain, and roughly 20 days with 6+ hours of sunshine this month.
Surabaya pairs Indonesia's busiest port with colonial lanes, markets and a shark-and-crocodile landmark.
May in Surabaya — workable with trade-offs
May averages 26°C (79°F) and humidity near 85%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Monthly rainfall reaches 113 mm — wet for this destination — but about 20 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 5.1/10 here, 6th of 12 months, against 8.1/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Plan for low-season pricing, with crowds are light for this destination. That combination — decent conditions at the lowest rates of the year — is the best value window on this page.
Flexible dates? August scores 3 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Surabaya in May?
- In May, Surabaya averages 26°C, 113 mm of rain, and about 20 days with 6+ hours of sunshine. Its climate-comfort score is 5.1/10.
- Is May a good time to visit Surabaya?
- May earns a 5.1/10 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 May?
- Expect about 113 mm of rain in May. Average humidity is 85% and there are about 20 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.