Oranjestad weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: December – June
What is the weather like in Oranjestad in September?
In September, Oranjestad is hot: daytime highs average 32 °C, and even at night it stays warm at around 26 °C. The sea averages 29.1 °C – almost as warm as a bath. The sun shines for around 7.9 hours a day. It is the rainy season: rain falls on about 17 days, totalling 112 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, September is a good month for a holiday in Oranjestad.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 76 | 75 | 74 |
| Day | 32° | 32° | 31° |
| Night | 26° | 26° | 26° |
| Sea | 29° | 29° | 29° |
| Sun | 8.4 h | 7.9 h | 7.8 h |
| Rain days | 17 | 17 | 18 |
More details for September
- Daylight
- 12 h 15 min06:00 – 18:15
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 27 km/haverage daily peakAll months
- Cloud cover
- 57 %on averageAll months
- Hot days
- 30 days30 °C or moreAll months
- Time zone
- UTC−4offset from UTC
How the score comes together
- Temperatureweight 35 %91 %
- Seaweight 25 %100 %
- Sunshineweight 20 %82 %
- Few rainy daysweight 20 %9 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Oranjestad in September: quick answers
Is Oranjestad hot in September?
Yes. In September, Oranjestad is hot: daytime highs average 32 °C and nights stay around 26 °C. The thermometer climbs to 30 °C or more every day.
Can you swim in Oranjestad in September?
Yes. In September the sea averages 29.1 °C – almost as warm as a bath.
Does it rain much in Oranjestad in September?
It is the rainy season: rain falls on about 17 days, totalling 112 mm.
Oranjestad month by month
The whole year in OranjestadAll destinations: Caribbean NetherlandsCaribbean weather in SeptemberWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences