Port-au-Prince weather in September

September in Port-au-Prince: sweltering, soaked, with muggy air — not the time — 25 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Port-au-Prince🇭🇹 Haiti · Greater Antilles · City49
  1. 77Jan
  2. 75Feb
  3. 70Mar
  4. 58Apr
  5. 57May
  6. 59Jun
  7. 54Jul
  8. 50Aug
  9. 49Sep
  10. 53Oct
  11. 65Nov
  12. 74Dec

#12 of 12 months in Port-au-Prince · #1274 of 1413 destinations to visit in September · comfort 49/100 (tier F)

Days
35°C
Nights
26°C
Wet days
25
Sun
10.8 h
Humidity
80%
Daylight
12 h
Port-au-Prince, Haiti
Photo: Matteo Favre · Pexels

Traveller notes on Port-au-Prince in September

Other months in Port-au-Prince

Forum posters describe Port-au-Prince as staying fairly consistent year-round, with average lows just below 70F and average highs just above 85F, though posters flag real seasonal rainfall and hurricane risk that visitors should weigh alongside those steady temperatures. Posters discussing summer travel to Haiti specifically warn that a week-long July visit will likely include a few severe rainstorms on top of genuinely overwhelming heat and humidity. Posters generally recommend monitoring hurricane season developments for any Haiti trip planned for this time of year, given the real, if not guaranteed, storm risk. Posters generally rate July as hot and storm-prone, workable for a visit but requiring real weather-contingency awareness.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe January as sitting within Port-au-Prince's driest stretch of the year, with December and January each seeing around six inches of rainfall - genuinely the least rain of any two-month period. Posters note temperatures stay warm essentially year-round here, with average lows just below 70F and average highs just above 85F showing relatively little seasonal swing compared to many destinations. Posters generally frame January as a good pick from a pure weather standpoint, combining the year's driest conditions with consistently warm temperatures, though posters' broader discussion of Port-au-Prince tends to focus heavily on safety and logistics given the security situation.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Port-au-Prince's card on the map.

Port-au-Prince climate normals — September

Daytime high35°C / 94°F🔥 sweltering
Nighttime low26°C / 78°F
Feels like (high)42°C / 108°F
Sea temperature31°C / 88°F♨️ bath-warm
Rainfall211 mm / 8.3 in⛈ soaked
Rainy days25 days
Humidity80%💦 very humid
Dew point23°C / 74°F
Sunshine10.8 h/day
Daylight12.2 h
Wind6 km/h / 4 mph
Air quality (US AQI)78🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Port-au-Prince 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)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Port-au-Prince'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).

Toughest weatherPort-au-Prince's weather peaks December–February, best around January.

September coincides with Hurricane season.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Port-au-Prince in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Hurricane season

    1 Jun – 30 Nov

    The hills behind the city were logged long ago, so the rain arrives in the ravines faster than the wind arrives at all. A tropical storm well offshore is enough to close roads in the lower districts. Source ↗

  • Season

    Wet season

    MonsoonRisk

    25 rainy days and about 211 mm in the month — the real kind of rainy season, not afternoon showers.

    from the climate normals

What's on around the world in September →

Where is Port-au-Prince?

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Port-au-Prince in September — FAQ

Is September a good time to visit Port-au-Prince?
September in Port-au-Prince: sweltering, soaked, with muggy air — not the time — 25 rainy days. It ranks #12 of 12 months for Port-au-Prince on SeasonMap's comfort score (49/100).
What is the weather like in Port-au-Prince in September?
In September, Port-au-Prince averages a daily high of 34.5°C and a low of 25.7°C, with about 210.7 mm of rain over roughly 25.2 rainy days.
What is the air quality in Port-au-Prince in September?
Port-au-Prince has a mean US Air Quality Index of about 78 in September.