Oranjestad (Aruba) weather in September
September in Oranjestad: sweltering, a little rain, with clean air — fine if you can take 38°C afternoons.
Updated September 2026 · climate normals from ERA5 reanalysis
#10 of 12 months in Oranjestad · #497 of 1413 destinations to visit in September · comfort 85/100 (tier A)
- Days
- 33°C
- Nights
- 27°C
- Wet days
- 9
- Sun
- 10.9 h
- Humidity
- 80%
- Daylight
- 12 h

Traveller notes on Oranjestad in September
Notes from nearby Willemstad (132 km away)
Oranjestad doesn't have its own notes for September yet — these are about Willemstad, close enough to share the season.
Forum posters describe Curaçao's climate as remarkably consistent year-round, with daytime temperatures in the 80sF and nights in the 70sF, tempered by a steady 12-15mph trade wind out of the east that keeps the heat comfortable even as the rainy season begins toward the very end of September. Posters are consistent that this rainy season is genuinely low-key - short, overnight or early-morning showers rather than anything that disrupts a full day, with sea temperatures around this time among the warmest of the year at roughly 84F. Posters do flag one exception worth knowing: when a storm or hurricane passes to the north, it can knock out the usual trade breeze, making conditions feel unusually humid and sticky even without direct rain. Posters generally rate September as a good, reliably warm time for Willemstad, with the trade wind and brief showers keeping conditions comfortable outside of the occasional storm-linked humid spell.
Other months in Oranjestad
The Aruba forum's February-weather thread reads like a victory lap: regulars quote the month's averages - highs of 87F (30.5 degrees), lows of 76F (24.4), sea at 79F (26), total rainfall of three-quarters of an inch and an average windspeed of 17mph - and add that when showers do come they are short and quickly blown out to sea by the trade winds. Oranjestad's February row agrees: 30.5-degree days, 24.6-degree nights, seven precipitation days, 10.8 hours of sun and a 25.8-degree sea.
Aruba forum threads consistently call January weather terrific overall - highs around 86F, lows near 76F, ocean water around 80F - but the recurring topic every thread circles back to is wind. Aruba's steady trade winds run genuinely strong (posters cited typical forecasts around 17-18mph with gusts to 25-26mph), and opinions split hard on whether that's a plus or minus: some visitors said sand blowing across the beach into their faces was the low point of the trip, while others said the constant breeze is exactly what keeps the island comfortable despite temperatures well into the 90s. Rain, when it comes, was described as brief and typically overnight or early morning rather than a daytime concern.
Forum posters describe January as terrific - typically 80s-degree highs, sunny and breezy - with Aruba's famous trade winds a near-constant presence. Posters are candid the wind can sound alarming in a forecast (some report apps predicting 'substantial wind every single day'), but describe the reality as comfortable and even welcome, since the breeze offsets the tropical heat rather than making the beach unpleasant. Rain is most likely in the morning hours, typically tapering off through the day, and when it does fall it's usually brief - posters describe showers most often arriving overnight or in the very early morning rather than disrupting daytime plans. January wind levels are described as broadly similar to April's, both well within the island's normal, manageable range.
Add your own note from Oranjestad's card on the map.
Oranjestad climate normals — September
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Oranjestad in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 2 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Oranjestad's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherOranjestad's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
Nearby, and something's on
Within 300 km of Oranjestad — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Oranjestad?
Oranjestad in September — FAQ
- Is September a good time to visit Oranjestad?
- September in Oranjestad: sweltering, a little rain, with clean air — fine if you can take 38°C afternoons. It ranks #10 of 12 months for Oranjestad on SeasonMap's comfort score (85/100).
- What is the weather like in Oranjestad in September?
- In September, Oranjestad averages a daily high of 33.4°C and a low of 27.4°C, with about 47.2 mm of rain over roughly 8.6 rainy days.
- What is the air quality in Oranjestad in September?
- Oranjestad has a mean US Air Quality Index of about 38 in September.
Within 300 km: Kralendijk's Sea turtle nesting around 1 May – 15 Dec.