Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
December verdict
Cocos Island National Park, Costa Rica in December
Weather score64Good
Good for holiday weather
Average highs sit around 29°C, giving warm days by monthly-average standards. Sunshine averages 0h per day, so this is not one of the brighter months. Rainfall averages 162mm, so some wet days are possible.
December weather
Monthly averages
Temp
29°C
Rain
162mm
Sun
0h
Sea
27°C
Weather score
64
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 162mm, so some wet days are possible.
Limited sun
Sunshine averages 0h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 27°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Cocos Island National Park, Costa Rica with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December29°C average high
December is close to Cocos Island National Park's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
December162mm average rain
December sits on the drier side of Cocos Island National Park's year, which helps with sightseeing and transfers.
Driest monthsJanuary to March and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December0 hours average sun
December is close to Cocos Island National Park's usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
December27°C average sea
December is below Cocos Island National Park's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaFebruary to May
Sea temperatures are usually near 29°C in this stretch, so swimming comfort is at its strongest.
Weather score
December64 weather score
December scores above Cocos Island National Park's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJanuary to March and November to December
These months have the strongest weather score in the monthly averages.