Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
December verdict
Guanacaste, Guanacaste, Costa Rica in December
Weather score75Very good
Very good for holiday weather
Average highs sit around 31°C, giving warm days by monthly-average standards. Sunshine averages 6.3h per day, enough for a balanced month. Rainfall averages 17mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
31°C
Rain
17mm
Sun
6.3h
Sea
27°C
Weather score
75
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 17mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.3h per day, enough for a balanced month.
Warm sea
Sea temperatures average 27°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Guanacaste, Guanacaste, Costa Rica with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December31°C average high
December is close to Guanacaste's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
December17mm average rain
December is one of Guanacaste's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December6.3 hours average sun
December sits close to Guanacaste's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJanuary to April
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December27°C average sea
December is below Guanacaste's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaApril to October
Sea temperatures are usually near 28°C in this stretch, so swimming comfort is at its strongest.
Weather score
December75 weather score
December scores above Guanacaste's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJanuary to April and December
These months have the strongest weather score in the monthly averages.
Hotels in Guanacaste, Guanacaste, Costa Rica
Marriott
JW Marriott Guanacaste Resort & SpaGuanacaste, Costa Rica
W Costa Rica – Reserva ConchalGuanacaste, Costa Rica
The Westin Reserva Conchal, an All-Inclusive Golf Resort & SpaGuanacaste, Costa Rica
El Mangroove, Autograph CollectionGuanacaste, Costa Rica
Planet Hollywood Costa Rica, An Autograph Collection All-Inclusive ResortGuanacaste, Guanacaste, Costa Rica