Climate averages 1991–2020
Saint-Marc weather
in August.
A hot, moderately wet month: the 2nd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Saint-Marc: daytime highs average 31.9°C and nights cool to about 25.8°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 84 mm of rain on roughly 19 days, which makes August a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 47 min on an average August day.
The nearest other city in this atlas is Dessalines (26 km away). In August its highs average 33.8°C, 1.9°C warmer than Saint-Marc, with 121 mm of rain.
Among the 18 cities listed in Haiti, Saint-Marc ranks joint 9th of 18 for the warmest August highs and 7th of 18 for the driest August (rainfall, lowest first). The mean August high of those 18 cities is 31.8°C; Saint-Marc is 0.1°C warmer than that mean.
From August to September, average highs fall by 0.7°C to 31.2°C, and monthly rainfall rises from 84 mm to 97 mm.
The annual picture
August 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-Marc climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.5°C22.2°C | 22.2°C | 11 | 2.6 | 11.111 h |
| February | 29.7°C22.3°C | 22.3°C | 11 | 2.8 | 11.512 h |
| March | 29.9°C22.7°C | 22.7°C | 20 | 5.8 | 12.012 h |
| April | 30.3°C23.7°C | 23.7°C | 37 | 11.9 | 12.613 h |
| May | 30.5°C24.7°C | 24.7°C | 73 | 17.1 | 13.013 h |
| June | 31.3°C25.4°C | 25.4°C | 63 | 17.0 | 13.313 h |
| July | 32.0°C25.6°C | 25.6°C | 63 | 16.6 | 13.213 h |
| August, selected | 31.9°C25.8°C | 25.8°C | 84 | 19.2 | 12.813 h |
| September | 31.2°C25.5°C | 25.5°C | 97 | 20.8 | 12.312 h |
| October | 30.4°C25.0°C | 25.0°C | 87 | 18.8 | 11.712 h |
| November | 30.0°C24.0°C | 24.0°C | 45 | 9.5 | 11.211 h |
| December | 29.8°C22.9°C | 22.9°C | 11 | 3.0 | 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
August in nearby cities
- Dessalines in AugustHaiti · 26 kmHigh 33.8°C · Low 24.6°C · 121 mm rain
- Gonaïves in AugustHaiti · 37 kmHigh 32.2°C · Low 25.2°C · 58 mm rain
- Arcahaie in AugustHaiti · 43 kmHigh 31.9°C · Low 25.1°C · 36 mm rain
- Saint-Michel de l'Atalaye in AugustHaiti · 48 kmHigh 31.2°C · Low 22.0°C · 143 mm rain
- Léogâne in AugustHaiti · 67 kmHigh 31.4°C · Low 25.2°C · 111 mm rain
- Cité Soleil in AugustHaiti · 70 kmHigh 33.4°C · Low 25.7°C · 193 mm rain
- Carrefour in AugustHaiti · 72 kmHigh 31.6°C · Low 25.1°C · 159 mm rain
- Port-au-Prince in AugustHaiti · 74 kmHigh 33.4°C · Low 25.0°C · 193 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-Marc) is explained once on the Saint-Marc year overview and on the Sources, method and limits page.