Weather Guide

Costa Rica Average Monthly Weather

Weather score59Good annual avg

Best months: February, March, January

Across the year, average daytime temperatures are around 29°C, sunshine averages 5.8h per day, and rainfall totals about 2605mm. Sea temperatures average 20°C across the year.

Guanacaste, Guanacaste, Costa Rica, Costa Rica travel weather guide
Photo by Sterling Lanier on Unsplash

Annual weather

Annual averages

Temp

29°C

Rain

2605mm

Annual total

Sun

5.8h

Sea

20°C

Weather score

59

Good avg

Seasonal climate calendar

TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score

Trip feel

Warm

Average highs sit around 28°C, giving warm days by monthly-average standards.

Wet

Rainfall averages 270mm, so showers are a real planning factor.

Some sun

Sunshine averages 5.5h per day, enough for a balanced month.

Cool sea

Sea temperatures average 20°C, so the water can feel cool.

Map

Weather map

Compare Costa Rica with nearby places by weather score, rain, sun, temperature, and swim conditions.

Temperature

View on map

July28°C average high

July is close to Costa Rica's usual daytime heat, with little temperature swing across the year.

Warmest monthsAll year

Daytime heat stays consistently warm through the year.

July270mm average rain

July sits near Costa Rica's yearly rainfall average, so rain is a normal planning factor rather than an outlier.

Driest monthsJanuary to April and December

This is the drier part of the year, when outdoor plans usually need less weather flexibility.

July5.5 hours average sun

July is below Costa Rica'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

View on map

July20°C average sea

July is close to Costa Rica's usual sea temperature, with limited seasonal change in the water.

Warmest seaAll year

Sea temperatures stay warm enough for easy swimming through the year.

Weather score

View on map

July52 weather score

July is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.

Best weather monthsJanuary to April and December

These months have the strongest weather score in the monthly averages.

Hotels near Costa Rica