Temperature
Hot by day, warm at night.
91°Ftypical May high
Typical range
May climate
May in Surabaya
Indonesia · Southeast Asia
Hot afternoons and plenty of sun. Humid air is the main drawback.
Some tradeoffs
Daytime high
91°F
Lows around 76°F
Rain
Several rainy days
Sun
10.5 h/day
Air feel
Very humid
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days, mostly brief and on-and-off. About 10 wet days this month.
32%wet-day frequency
AmountWet-day chance
Sunshine
A mix of sunshine and cloud.
10.5 hMay sunshine
Heat & humidity by month
Very hot days with very humid air.
64%May Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In May, afternoons feel about 96° and nights feel near 85°.
WarmHotSwelteringNight hours
Clear sky
Partly cloudy skies this month.
43%May Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in May.
3 mphMay Calm
More detailIncludes daypart comfort
Typical May day
May late afternoons are around 88°F, easing to about 83°F in early evening.
Avg temp Typical range
Morning84°F
Feels 92°F
Rain8%
Cloud52%
Humid airVery high
Sun intensityModerate
Midday90°F
Feels 96°F
Rain25%
Cloud57%
Humid airVery high
Sun intensityStrong
Late afternoon89°F
Feels 95°F
Rain37%
Cloud60%
Humid airVery high
Sun intensityModerate
Early evening83°F
Feels 91°F
Rain12%
Cloud61%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 88 | 76 | 11.8 | 29 | 8.7 | 84 |
| Feb | 88 | 76 | 11.0 | 27 | 8.9 | 85 |
| Mar | 88 | 76 | 10.0 | 28 | 9.3 | 84 |
| Apr | 89 | 76 | 5.6 | 21 | 9.7 | 81 |
| May | 91 | 76 | 1.9 | 10 | 10.5 | 75 |
| Jun | 91 | 75 | 0.9 | 6 | 10.6 | 71 |
| Jul | 91 | 74 | 0.5 | 3 | 10.8 | 67 |
| Aug | 91 | 73 | 0.1 | 2 | 11.0 | 64 |
| Sep | 93 | 75 | 0.4 | 3 | 11.2 | 63 |
| Oct | 94 | 77 | 1.5 | 8 | 11.4 | 65 |
| Nov | 92 | 78 | 4.6 | 18 | 10.4 | 72 |
| Dec | 89 | 77 | 10.0 | 27 | 8.9 | 82 |
Similar climates
Similar
Similar travel styleSingaporeSingaporeSimilar travel styleBangkokThailandSimilar travel styleHo Chi Minh CityVietnamSimilar travel styleKuala LumpurMalaysia
Want a side-by-side climate view? Compare Surabaya with Singapore.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 26, 2026
Data & methodology