| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Number of Wet Days (probability of rain on a day)
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average temperature in Willemstad in September is very hot at 28.7 °C (83.66 °F).
- Afternoons can be severely hot with average high temperatures reaching 35 °C (95 °F).
- Overnight temperatures are generally fairly hot with an average low of 23 °C (73.4 °F).
- The average diurnal temperature range/ variation in September is 12 °C (21.6 °F).
- The weather in September is a little parched with seldom any rain. A mere 45mm (1.8in) of water accrues across an average of 4 days.
- The blue above Willemstad is sunny with on balance a sizable 9:01 of resplendent solar radiation per day.
- The shortest day is 12:00 long and the longest day is 12:20 long with an average length of 12:10.
- There are approximately 3:01 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 74.9% of daylight hours and cloudy 25.1% of daylight hours.
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Weather Trend Graph for September in Willemstad, Curaçao
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