Port-au-Prince 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
Poor
Best time to visit: December – February
What is the weather like in Port-au-Prince in September?
In September, Port-au-Prince is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 30.3 °C – almost as warm as a bath. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 23 days, totalling 139 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is not an ideal month for a holiday in Port-au-Prince.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 27 | 32 | 36 |
| Day | 34° | 32° | 31° |
| Night | 26° | 25° | 25° |
| Sea | 30° | 30° | 30° |
| Sun | 9 h | 8 h | 7 h |
| Rain days | 21 | 23 | 21 |
More details for September
- Daylight
- 12 h 16 min06:37 – 18:53
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 13 km/haverage daily peakAll months
- Cloud cover
- 62 %on averageAll months
- Hot days
- 29 days30 °C or moreAll months
- Time zone
- UTC−4America/Port-au-Prince
How the score comes together
- Temperatureweight 50 %33 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Port-au-Prince in September: quick answers
Is Port-au-Prince hot in September?
Yes. In September, Port-au-Prince is hot: daytime highs average 32 °C and nights stay around 25 °C. On about 29 days the thermometer climbs to 30 °C or more.
Can you swim in Port-au-Prince in September?
Yes. In September the sea averages 30.3 °C – almost as warm as a bath.
Does it rain much in Port-au-Prince in September?
It rains often – on about 23 days, adding up to 139 mm.
Port-au-Prince month by month
The whole year in Port-au-PrinceAll destinations: HaitiCaribbean weather in SeptemberWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, 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