Saint-Marc, Haiti Climate
The warmest month is July, with an average high of 35°C; the coldest is January, with an average low of 20°C. A normal year brings 438 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 24
- Normal high
- 33°C
- Normal low
- 25°C
- Reanalysis high
- 37°Cin 1994
- Reanalysis low
- 23°Cin 1991
- Chance of a wet day
- 34%
- Daylight
- 12 h 05 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 31°C | 20°C | 34°C (2014) | 15°C (2000) | 25 mm | 6.2 |
| February | 32°C | 21°C | 35°C (1991) | 16°C (2005) | 14 mm | 2.8 |
| March | 32°C | 21°C | 36°C (2005) | 16°C (2010) | 22 mm | 6.2 |
| April | 33°C | 23°C | 37°C (2020) | 18°C (2000) | 30 mm | 6.0 |
| May | 33°C | 24°C | 37°C (1998) | 19°C (1992) | 59 mm | 9.3 |
| June | 34°C | 25°C | 38°C (1994) | 22°C (2002) | 33 mm | 6.0 |
| July | 35°C | 25°C | 39°C (1997) | 22°C (2010) | 25 mm | 6.2 |
| August | 35°C | 25°C | 39°C (2007) | 22°C (2014) | 47 mm | 6.2 |
| September | 33°C | 25°C | 38°C (2002) | 22°C (2011) | 45 mm | 9.0 |
| October | 32°C | 24°C | 37°C (2009) | 21°C (1996) | 59 mm | 12.4 |
| November | 31°C | 23°C | 36°C (2002) | 18°C (2004) | 51 mm | 9.0 |
| December | 31°C | 21°C | 34°C (1997) | 16°C (2010) | 28 mm | 6.2 |
| Year | 33°C | 23°C | 438 mm | 86 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
438 mm in a normal year, most in May.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Saint-Marc.
The muggiest month is August, when 99 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 18°C | 68% | 0% | 8% | 58% | 33% | 0% | 0% |
| February | 17°C | 64% | 0% | 13% | 66% | 21% | 0% | 0% |
| March | 17°C | 63% | 1% | 12% | 55% | 33% | 0% | 0% |
| April | 18°C | 62% | 0% | 4% | 41% | 53% | 1% | 0% |
| May | 20°C | 65% | 0% | 0% | 11% | 72% | 17% | 0% |
| June | 20°C | 63% | 0% | 0% | 5% | 71% | 25% | 0% |
| July | 20°C | 59% | 0% | 0% | 9% | 75% | 16% | 0% |
| August | 21°C | 62% | 0% | 0% | 2% | 65% | 34% | 0% |
| September | 21°C | 67% | 0% | 0% | 1% | 53% | 46% | 0% |
| October | 21°C | 70% | 0% | 0% | 2% | 47% | 51% | 0% |
| November | 20°C | 72% | 0% | 0% | 11% | 64% | 25% | 0% |
| December | 19°C | 70% | 0% | 4% | 37% | 55% | 4% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is January, with the sky 36 percent covered on average; the cloudiest is May, at 59 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is March, averaging 11.9 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 14, with 13 h 17 min of daylight; the shortest is Dec 14, with 10 h 59 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Saint-Marc in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.