Cool
Average highs are around 3掳C, so pack for cooler days.
December verdict
Poor for holiday weather
Average highs are around 3掳C, so pack for cooler days. Sunshine averages 5.7h per day, enough for a balanced month. Rainfall averages 11mm, which is relatively low for holiday planning.

Monthly averages
Temp
3掳C
Rain
11mm
Sun
5.7h
Sea
9掳C
Weather score
36
Poor
Cool
Average highs are around 3掳C, so pack for cooler days.
Drier
Rainfall averages 11mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.7h per day, enough for a balanced month.
Cool sea
Sea temperatures average 9掳C, so the water can feel cool.
Map
Compare Dalian, Liaoning, China with nearby places by weather score, rain, sun, temperature, and swim conditions.
December3掳C average high
December is on the cooler side of Dalian's year, useful if you prefer less intense daytime heat.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
December11mm average rain
December is one of Dalian's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to May and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December5.7 hours average sun
December is one of Dalian's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to June
This stretch has the strongest sunshine in the monthly averages.
December9掳C average sea
December is below Dalian's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 22掳C in this stretch, so swimming comfort is at its strongest.
December36 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.