Warm
Average highs sit around 27°C, giving warm days by monthly-average standards.
Weather Guide
Best months: February, March, January
Across the year, average daytime temperatures are around 27°C, sunshine averages 6.7h per day, and rainfall totals about 1831mm.
Annual averages
Temp
27°C
Rain
1831mm
Annual total
Sun
6.7h
Weather score
66
Good avg
Warm
Average highs sit around 27°C, giving warm days by monthly-average standards.
Wet
Rainfall averages 250mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Map
Compare San Jose, San Jose, Costa Rica with nearby places by weather score, rain, sun, temperature, and swim conditions.
August27°C average high
August is close to San Jose's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
August250mm average rain
August is wetter than San Jose's yearly average, so flexible plans matter more.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
August5.8 hours average sun
August is one of San Jose's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJanuary to April
This stretch has the strongest sunshine in the monthly averages.
August53 weather score
August scores below San Jose'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.
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