Climate averages 1991–2020
Cap-Haïtien weather
in September.
A hot, wet month: the warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Cap-Haïtien: daytime highs average 29.3°C and nights cool to about 25.5°C. By daytime temperature it is the warmest month of the year.
Expect about 101 mm of rain on roughly 22 days, which makes September a wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 16 min on an average September day.
The nearest other city in this atlas is Saint-Michel de l'Atalaye (46 km away). In September its highs average 30.2°C, 0.9°C warmer than Cap-Haïtien, with 182 mm of rain.
Among the 18 cities listed in Haiti, Cap-Haïtien ranks 18th of 18 for the warmest September highs and 7th of 18 for the driest September (rainfall, lowest first). The mean September high of those 18 cities is 31.0°C; Cap-Haïtien is 1.8°C cooler than that mean.
From September to October, average highs fall by 0.6°C to 28.6°C, and monthly rainfall rises from 101 mm to 125 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
Cap-Haïtien climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.9°C22.2°C | 22.2°C | 108 | 15.4 | 11.111 h |
| February | 25.9°C22.1°C | 22.1°C | 77 | 13.7 | 11.511 h |
| March | 26.0°C22.2°C | 22.2°C | 98 | 15.3 | 12.012 h |
| April | 26.7°C22.9°C | 22.9°C | 96 | 16.8 | 12.613 h |
| May | 27.7°C24.0°C | 24.0°C | 112 | 19.9 | 13.113 h |
| June | 28.9°C25.3°C | 25.3°C | 65 | 15.5 | 13.313 h |
| July | 29.0°C25.6°C | 25.6°C | 60 | 15.3 | 13.213 h |
| August | 29.1°C25.8°C | 25.8°C | 82 | 19.3 | 12.813 h |
| September, selected | 29.3°C25.5°C | 25.5°C | 101 | 22.2 | 12.312 h |
| October | 28.6°C24.8°C | 24.8°C | 125 | 23.4 | 11.712 h |
| November | 27.3°C23.8°C | 23.8°C | 151 | 22.0 | 11.211 h |
| December | 26.5°C23.0°C | 23.0°C | 101 | 17.8 | 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
- Saint-Michel de l'Atalaye in SeptemberHaiti · 46 kmHigh 30.2°C · Low 21.6°C · 182 mm rain
- Gonaïves in SeptemberHaiti · 62 kmHigh 31.4°C · Low 24.7°C · 85 mm rain
- Dessalines in SeptemberHaiti · 65 kmHigh 32.6°C · Low 24.1°C · 158 mm rain
- Port-de-Paix in SeptemberHaiti · 69 kmHigh 31.3°C · Low 25.8°C · 94 mm rain
- Saint-Marc in SeptemberHaiti · 89 kmHigh 31.2°C · Low 25.5°C · 97 mm rain
- Arcahaie in SeptemberHaiti · 115 kmHigh 31.1°C · Low 24.7°C · 43 mm rain
- Croix-des-Bouquets in SeptemberHaiti · 132 kmHigh 32.1°C · Low 25.0°C · 223 mm rain
- Cité Soleil in SeptemberHaiti · 132 kmHigh 32.3°C · Low 25.0°C · 223 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 Cap-Haïtien) is explained once on the Cap-Haïtien year overview and on the Sources, method and limits page.