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San Jose weather in September 2023
- 2424°C max day temperature
- 2424 days with some rainfall
- 1717°C min night temperature
- 1212 hours of daylight per day
- LLow heat & humidity
- 372372 mm of monthly rainfall
- 1111+ (Extreme) UV index
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The September weather guide for Costa Rica (San Jose) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
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How hot is it in San Jose in September?
Daytime temperatures usually reach 24°C in San Jose in September, falling to 17°C at night.
How sunny is it in San Jose in September?
There are normally 6 hours of bright sunshine each day in San Jose in September - that's 49% of daylight hours.
Does it rain in San Jose in September?
There are usually 24 days with some rain in San Jose in September and the average monthly rainfall is 372mm.
San Jose September sunrise & sunset times
Browse the sunrise and sunset times for San Jose in September 2023. Select a month to view San Jose sunrise and sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Friday, 1st September 2023||05:27||17:45|
|Friday, 15th September 2023||05:26||17:37|
|Saturday, 30th September 2023||05:25||17:27|
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