Climate averages 1991–2020
Pétionville weather
in September.
A hot, very wet month: the 4th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Pétionville: daytime highs average 29.7°C and nights cool to about 22.7°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 223 mm of rain on roughly 25 days, which makes September a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average September day.
The nearest other city in this atlas is Port-au-Prince (7 km away). In September its highs average 32.1°C, 2.5°C warmer than Pétionville, with 223 mm of rain.
Among the 18 cities listed in Haiti, Pétionville ranks 16th of 18 for the warmest September highs and joint 15th of 18 for the driest September (rainfall, lowest first). The mean September high of those 18 cities is 31.0°C; Pétionville is 1.4°C cooler than that mean.
From September to October, average highs fall by 0.8°C to 28.8°C, and monthly rainfall falls from 223 mm to 208 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Pétionville climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.9°C19.1°C | 19.1°C | 25 | 6.5 | 11.111 h |
| February | 28.4°C19.5°C | 19.5°C | 42 | 8.3 | 11.512 h |
| March | 28.4°C20.1°C | 20.1°C | 103 | 15.3 | 12.012 h |
| April | 28.5°C21.1°C | 21.1°C | 169 | 20.3 | 12.613 h |
| May | 28.8°C22.1°C | 22.1°C | 240 | 24.0 | 13.013 h |
| June | 30.0°C22.8°C | 22.8°C | 142 | 20.1 | 13.213 h |
| July | 30.7°C23.0°C | 23.0°C | 130 | 20.3 | 13.113 h |
| August | 30.5°C23.2°C | 23.2°C | 193 | 23.4 | 12.813 h |
| September, selected | 29.7°C22.7°C | 22.7°C | 223 | 25.4 | 12.312 h |
| October | 28.8°C22.2°C | 22.2°C | 208 | 24.2 | 11.712 h |
| November | 28.1°C20.9°C | 20.9°C | 101 | 15.8 | 11.311 h |
| December | 27.8°C19.6°C | 19.6°C | 36 | 7.2 | 11.011 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Port-au-Prince in SeptemberHaiti · 7 kmHigh 32.1°C · Low 24.5°C · 223 mm rain
- Cité Soleil in SeptemberHaiti · 9 kmHigh 32.3°C · Low 25.0°C · 223 mm rain
- Croix-des-Bouquets in SeptemberHaiti · 9 kmHigh 32.1°C · Low 25.0°C · 223 mm rain
- Carrefour in SeptemberHaiti · 12 kmHigh 30.9°C · Low 24.7°C · 180 mm rain
- Léogâne in SeptemberHaiti · 37 kmHigh 30.8°C · Low 24.8°C · 121 mm rain
- Arcahaie in SeptemberHaiti · 37 kmHigh 31.1°C · Low 24.7°C · 43 mm rain
- Jacmel in SeptemberHaiti · 41 kmHigh 29.4°C · Low 25.1°C · 137 mm rain
- Tigwav in SeptemberHaiti · 62 kmHigh 31.4°C · Low 26.3°C · 121 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Pétionville) is explained once on the Pétionville year overview and on the Sources, method and limits page.
Port-au-Prince, Cité Soleil and Croix-des-Bouquets lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.