Climate averages 1991–2020
Saint-Michel de l'Atalaye 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 Saint-Michel de l'Atalaye: daytime highs average 30.2°C and nights cool to about 21.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 182 mm of rain on roughly 24 days, which makes September a very wet month (the 11th 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 Dessalines (23 km away). In September its highs average 32.6°C, 2.4°C warmer than Saint-Michel de l'Atalaye, with 158 mm of rain.
Among the 18 cities listed in Haiti, Saint-Michel de l'Atalaye ranks 14th of 18 for the warmest September highs and 14th of 18 for the driest September (rainfall, lowest first). The mean September high of those 18 cities is 31.0°C; Saint-Michel de l'Atalaye is 0.8°C cooler than that mean.
From September to October, average highs fall by 1.1°C to 29.1°C, and monthly rainfall falls from 182 mm to 151 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
Saint-Michel de l'Atalaye climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.6°C17.8°C | 17.8°C | 19 | 5.6 | 11.111 h |
| February | 28.3°C17.9°C | 17.9°C | 22 | 5.9 | 11.511 h |
| March | 28.9°C18.5°C | 18.5°C | 46 | 8.4 | 12.012 h |
| April | 29.4°C19.7°C | 19.7°C | 111 | 14.4 | 12.613 h |
| May | 29.5°C20.7°C | 20.7°C | 211 | 20.7 | 13.013 h |
| June | 30.6°C21.6°C | 21.6°C | 138 | 19.3 | 13.313 h |
| July | 31.3°C21.7°C | 21.7°C | 118 | 20.0 | 13.213 h |
| August | 31.2°C22.0°C | 22.0°C | 143 | 22.5 | 12.813 h |
| September, selected | 30.2°C21.6°C | 21.6°C | 182 | 24.2 | 12.312 h |
| October | 29.1°C21.0°C | 21.0°C | 151 | 22.3 | 11.712 h |
| November | 27.8°C19.8°C | 19.8°C | 74 | 14.4 | 11.211 h |
| December | 27.6°C18.5°C | 18.5°C | 23 | 5.9 | 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
- Dessalines in SeptemberHaiti · 23 kmHigh 32.6°C · Low 24.1°C · 158 mm rain
- Gonaïves in SeptemberHaiti · 38 kmHigh 31.4°C · Low 24.7°C · 85 mm rain
- Cap-Haïtien in SeptemberHaiti · 46 kmHigh 29.3°C · Low 25.5°C · 101 mm rain
- Saint-Marc in SeptemberHaiti · 48 kmHigh 31.2°C · Low 25.5°C · 97 mm rain
- Arcahaie in SeptemberHaiti · 69 kmHigh 31.1°C · Low 24.7°C · 43 mm rain
- Port-de-Paix in SeptemberHaiti · 82 kmHigh 31.3°C · Low 25.8°C · 94 mm rain
- Cité Soleil in SeptemberHaiti · 88 kmHigh 32.3°C · Low 25.0°C · 223 mm rain
- Croix-des-Bouquets in SeptemberHaiti · 89 kmHigh 32.1°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 Saint-Michel de l'Atalaye) is explained once on the Saint-Michel de l'Atalaye year overview and on the Sources, method and limits page.