Mild
Average highs are around 26°C, so days are mild rather than hot.
December verdict
Koloa, Hawaii, United States in December
Weather score56Good
Good for holiday weather
Average highs are around 26°C, so days are mild rather than hot. Sunshine averages 5.2h per day, enough for a balanced month. Rainfall averages 215mm, so showers are a real planning factor.
December weather
Monthly averages
Temp
26°C
Rain
215mm
Sun
5.2h
Sea
25°C
Weather score
56
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 215mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.2h per day, enough for a balanced month.
Swimmable
Sea temperatures average 25°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Koloa, Hawaii, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December26°C average high
December is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsJune to October
This stretch sets the upper range for average daytime heat.
Rain
December215mm average rain
December is one of Koloa's wettest months, so rain is likely to be a major planning factor.
Driest monthsJune to July and September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December5.2 hours average sun
December is one of Koloa's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to September
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December25°C average sea
December is close to Koloa's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJune to November
Sea temperatures are usually near 26°C in this stretch, so swimming comfort is at its strongest.
Weather score
December56 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 monthsMay to October
These months have the strongest weather score in the monthly averages.
