Weather in September in San Jose

< September >
	Normal Max/ High Temperature	27°C (81°F)
	Average Temperature	22°C (71°F)
	Min/ Low Temperature	16°C (61°F)
	Normal Precipitation	305mm (12in)
	Number of Wet Days (probability of rain on a day)	24 (80%)
	Average Sunlight per day	04h 50'
	Average Daylight per day	12h 10'
	Sunny (Cloudy) Daylight Hours	40% (60%)
	Sun altitude at solar noon on the 21st day.	80.4°

• The average temperature in San Jose in September is really warm at 21.5 °C (70.7 °F).
• Afternoons can be hot with average high temperatures reaching 27 °C (80.6 °F).
• Overnight temperatures are generally very mild with an average low of 16 °C (60.8 °F).
• In September there is a range/ variation of daily average temperatures of 11 °C (19.8 °F).
• Precipitation averages for September are high with 305mm (12 in) recorded across 24 days.
• The skies in San Jose are slightly fair with on average a mediocre 4h 50' of dazzling solar radiation daily.
• The shortest day is 12h 01' long and the longest day is 12h 18' long with an average length of 12h 10'.
• There are approximately 7h 12' per day when the sun is occluded by cloud, haze, fog etc.
• It is sunny approximately 40.2% of daylight hours and cloudy 59.8% of daylight hours.

Weather Trend Graph for September in San Jose, Costa Rica