Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
December verdict
Medan, North Sumatra, Indonesia in December
Weather score56Good
Good for holiday weather
Average highs sit around 31°C, giving warm days by monthly-average standards. Sunshine averages 4.8h per day, so this is not one of the brighter months. Rainfall averages 228mm, so showers are a real planning factor.
December weather
Monthly averages
Temp
31°C
Rain
228mm
Sun
4.8h
Sea
29°C
Weather score
56
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 228mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.8h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 29°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Medan, North Sumatra, Indonesia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December31°C average high
December is close to Medan's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
December228mm average rain
December is wetter than Medan's yearly average, so flexible plans matter more.
Driest monthsJanuary to March and June to July
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December4.8 hours average sun
December is one of Medan's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsFebruary to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December29°C average sea
December is one of the cooler sea months locally, though the water still averages warm enough for most swimmers.
Warmest seaMarch to November
Sea temperatures are usually near 30°C in this stretch, so swimming comfort is at its strongest.
Weather score
December56 weather score
December scores below Medan's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to March and June to July
These months have the strongest weather score in the monthly averages.
