Warm
Average highs sit around 27°C, giving warm days by monthly-average standards.
September verdict
San Jose, San Jose, Costa Rica in September
Weather score48Mixed
Mixed for holiday weather
Average highs sit around 27°C, giving warm days by monthly-average standards. Sunshine averages 5.5h per day, enough for a balanced month. Rainfall averages 332mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
27°C
Rain
332mm
Sun
5.5h
Weather score
48
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 332mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.5h per day, enough for a balanced month.
Map
Weather map
Compare San Jose, San Jose, Costa Rica with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September27°C average high
September 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.
Rain
September332mm average rain
September is one of San Jose's wettest months, so rain is likely to be a major planning factor.
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
September5.5 hours average sun
September 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.
Weather score
September48 weather score
September 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 in San Jose, San Jose, Costa Rica
Marriott
Sheraton San Jose Hotel, Costa RicaSan Jose, San Jose, Costa Rica
Delta Hotels by Marriott San Jose AurolaSan Jose, San Jose, Costa Rica
Aloft San Jose Hotel, Costa RicaSan Jose, San Jose, Costa Rica
Courtyard San Jose EscazuSan Jose, Costa Rica
D Sabana Hotel San JoséSan Jose, San Jose, Costa Rica
Four Points by Sheraton San Jose Costa RicaSan Jose, Costa Rica