Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
Weather Guide
Guanacaste, Guanacaste, Costa Rica Average Monthly Weather
Weather score64Good annual avg
Best months: January, February, March
Across the year, average daytime temperatures are around 31°C, sunshine averages 6.3h per day, and rainfall totals about 1752mm. Sea temperatures average 28°C across the year.
Annual weather
Annual averages
Temp
31°C
Rain
1752mm
Annual total
Sun
6.3h
Sea
28°C
Weather score
64
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 160mm, so some wet days are possible.
Some sun
Sunshine averages 5.7h per day, enough for a balanced month.
Warm sea
Sea temperatures average 29°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
July31°C average high
July 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
July160mm average rain
July sits near Guanacaste's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
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
July5.7 hours average sun
July is below Guanacaste's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary to April
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July29°C average sea
July sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaApril to October
Sea temperatures are usually near 28°C in this stretch, so swimming comfort is at its strongest.
Weather score
July59 weather score
July scores below Guanacaste's yearly average, so the weather trade-offs are more noticeable.
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