Hot
Average highs reach 32°C, so days can feel very hot.
December verdict
Surabaya, East Java, Indonesia in December
Weather score59Good
Good for holiday weather
Average highs reach 32°C, so days can feel very hot. Sunshine averages 7.4h per day, enough for a balanced month. Rainfall averages 216mm, so showers are a real planning factor.
December weather
Monthly averages
Temp
32°C
Rain
216mm
Sun
7.4h
Sea
30°C
Weather score
59
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 216mm, so showers are a real planning factor.
Some sun
Sunshine averages 7.4h per day, enough for a balanced month.
Warm sea
Sea temperatures average 30°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Surabaya, East Java, Indonesia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December32°C average high
December is close to Surabaya's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
December216mm average rain
December is wetter than Surabaya's yearly average, so flexible plans matter more.
Driest monthsJune to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December7.4 hours average sun
December is below Surabaya's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJuly to October
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December30°C average sea
December sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJanuary to June and October to December
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
December59 weather score
December scores below Surabaya's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to October
These months have the strongest weather score in the monthly averages.
Hotels in Surabaya, East Java, Indonesia
Marriott
JW Marriott Hotel SurabayaSurabaya, Indonesia
The Westin SurabayaSurabaya, East Java, Indonesia
Sheraton Surabaya Hotel & TowersSurabaya, East Java, Indonesia
New:Surabaya, East Java, Indonesia
Fairfield by Marriott SurabayaSurabaya, Indonesia
Four Points by Sheraton Surabaya, Pakuwon IndahSurabaya, East Java, Indonesia