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Surabaya weather

East Java · 3,018,022 inhabitants · Friday, October 30 · updated 00:01

Raining now Air: Extremely poor Heatwave risk · 14 d Moderate storm risk · Today, Tomorrow, Sun

30°

Mainly clear

Feels like 42°C

Wind

6 km/h

Gusts

17 km/h

Humidity

73 %

Pressure

1012 hPa

Clouds

25 %

Storm

Rise 05:02 Set 17:23 Day 12 h 21 min UV 9 · Very high

Morning, afternoon, evening

Trend

Night

Rain showers

28°27°

Feels like 38°

Wind ↑ SSW 3 km/h

Gusts 9 km/h

Humidity 77 %

💧 2.3 mm

⚡ storm

Morning

Rain showers

33°29°

Feels like 43°

Wind ↑ E 6 km/h

Humidity 53 %

💧 0.8 mm

⚡ storm

Afternoon

Mainly clear

34°32°

Feels like 44°

Wind ↑ ESE 14 km/h

Humidity 55 %

💧 0.2 mm

Evening

Rain showers

29°

Feels like 39°

Wind ↑ S 12 km/h

Gusts 20 km/h

Humidity 72 %

💧 0.9 mm

⚡ storm

07:00

29°

0.7mm

SSW 3

10:00

33°

0.1mm

E 6

13:00

34°

0.1mm

E 6

16:00

32°

0.1mm

ESE 14

19:00

29°

0.8mm

S 2

22:00

29°

0.1mm

E 12

01:00

27°

0.9mm

SW 4

04:00

27°

SW 5

Surabaya forecast in charts · next 7 days

The week ahead: highs and lows

▲ This week runs +2.4° warmer than usual

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

Temperature (°C) Rain (mm) Wind (km/h)

Surabaya climate: what a normal year looks like

Every month of the year sees typical highs of 30 °C or more — January, the mildest, still averages 31 °C.

A normal year brings roughly 1,830 mm of rain — more than 85% of the towns of 20,000+ people we compared it with.

Days are almost the same length all year: 11 h 42 min of daylight in late June, 12 h 32 min in late December.

Forecast highs for the coming week average 34 °C, 1 °C warmer than a normal October (33 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall
Jan	31 °C	25 °C	298 mm
Feb	31 °C	25 °C	279 mm
Mar	31 °C	26 °C	283 mm
Apr	32 °C	26 °C	198 mm
May	32 °C	26 °C	94 mm
Jun	31 °C	25 °C	55 mm
Jul	31 °C	25 °C	26 mm
Aug	31 °C	24 °C	10 mm
Sep	32 °C	25 °C	24 mm
Oct	33 °C	26 °C	81 mm
Nov	32 °C	26 °C	191 mm
Dec	31 °C	26 °C	288 mm
Whole year	32 °C	25 °C	1,820 mm

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 7.21° S, 112.72° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air you breathe in Surabaya: pollution and pollen

6/6

Extremely poor

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.590µg/m³

PM1092µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around Surabaya

Rain observed over the last two hours by official weather radars around Surabaya, followed by the radar forecast for the next hour where the weather service provides one.

Rain radar Last two hours, then forecast where available · drag the timeline

No open weather radar covers Surabaya yet: the map shows our hour-by-hour rain forecast (ICON, GFS).

Moon over Surabaya

Waning gibbous

79 % illuminated · 19.3 days

Rise 20:30 Set 07:37

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Tue 10/11 1% New moon

Wed 11/11 3%

Moonrise and moonset in local time (Asia/Jakarta); phase and lit fraction from a synodic calculation.

Look up a past day in Surabaya

Curious about the weather in Surabaya on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

Surabaya weather at a glance

This page gathers everything about the weather in Surabaya, East Java: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “mainly clear”, it is 30 °C (feels like 42 °C) and the wind blows at 6 km/h.

Expected range today: 27 °C to 34 °C and around 3 mm of rain; keep an eye on thunderstorms; it will be very hot. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.

Other big cities nearby

Surabaya weather data for developers

Use the Surabaya forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

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Where does this forecast come from? Our engine, checked every day against 1125 weather stations