Saint-Marc climate
Saint-Marc (Haiti) has a hot semi-arid climate (Köppen BSh). The average temperature over the year is 27 °C81 °F, and about 499 mm20 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Saint-Marc climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3086 | 1967 | 2576 | 251.0 |
| Feb | 3188 | 2068 | 2578 | 180.7 |
| Mar | 3188 | 2069 | 2679 | 240.9 |
| Apr | 3290 | 2271 | 2781 | 351.4 |
| May | 3290 | 2374 | 2882 | 592.3 |
| Jun | 3392 | 2476 | 2984 | 391.5 |
| Jul | 3493 | 2576 | 2985 | 341.3 |
| Aug | 3493 | 2576 | 2985 | 562.2 |
| Sep | 3391 | 2476 | 2883 | 481.9 |
| Oct | 3189 | 2374 | 2781 | 732.9 |
| Nov | 3086 | 2271 | 2679 | 602.4 |
| Dec | 3086 | 2068 | 2577 | 291.2 |
| Year | 3493 | 1967 | 2781 | 49920 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 69% | 36% | 4.6 | 11:06 |
| Feb | 64% | 35% | 5.2 | 11:30 |
| Mar | 63% | 40% | 5.7 | 11:59 |
| Apr | 63% | 45% | 6.1 | 12:34 |
| May | 65% | 58% | 5.9 | 13:02 |
| Jun | 63% | 53% | 6.4 | 13:16 |
| Jul | 61% | 48% | 6.5 | 13:10 |
| Aug | 64% | 53% | 6.3 | 12:46 |
| Sep | 68% | 54% | 5.8 | 12:13 |
| Oct | 72% | 56% | 5.0 | 11:40 |
| Nov | 73% | 47% | 4.4 | 11:12 |
| Dec | 71% | 34% | 4.4 | 10:59 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Saint-Marc is like
The warmest month is July, with an average high of 34 °C93 °F and a low of 25 °C76 °F. The coldest is January, when highs average 30 °C86 °F and lows 19 °C67 °F. Seasonal differences are small — just 4.7 °C8.5 °F between the warmest and the coolest month.
Annual precipitation is moderate at about 499 mm20 in. The wettest three-month stretch is September–November, which brings 36% of the annual total. Months with less than 20 mm0.8 in on average: February. The wettest month is October (73 mm2.9 in), the driest is February (18 mm0.7 in).
Relative humidity ranges from 61% in July to 73% in November. The clearest skies (lowest average cloud amount, 34%) are typical of December. Average wind speed near the ground ranges from 6 km/h (4 mph) in June to 9 km/h (6 mph) in March. Daylight lasts from about 11.0 hours in December to 13.3 hours in June.
Best time to visit Saint-Marc
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–February: average highs of 30 °C86 °F to 31 °C88 °F with 18 mm0.7 in to 60 mm2.4 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 34 °C93 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Saint-Marc
- Wetter months (May, August–November) — highs 3086 to 34 °C93 °F, lows 2271 to 25 °C76 °F, about 59 mm2.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Drier months (December–April, June and July) — highs 3086 to 34 °C93 °F, lows 1967 to 25 °C76 °F, about 29 mm1.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Saint-Marc compares
Compared with Port-au-Prince, about 74 km to the southeast, Saint-Marc is on average 1.8 °C3.2 °F cooler and receives a similar amount of precipitation. The difference is largest in December (2.5 °C4.6 °F cooler).
Of the 9 places in Haiti covered by World Climates, Saint-Marc is the 9th warmest by annual mean temperature and the 8th wettest by annual precipitation. See all of them on the Haiti climate page.
Places in other countries with the most similar temperature and rainfall pattern: La Vega (Dominican Republic, BSh), Santo Domingo (Dominican Republic, BSh) and San Cristóbal (Dominican Republic, BSh).
Nearby places
- Dessalines 26 km · 28 °C82 °F · 542 mm21 in
- Arcahaie 43 km · 29 °C84 °F · 499 mm20 in
- Port-au-Prince 74 km · 29 °C84 °F · 509 mm20 in
- Tigwav 78 km · 29 °C83 °F · 538 mm21 in
- Cap-Haïtien 89 km · 27 °C81 °F · 653 mm26 in
- Port-de-Paix 93 km · 27 °C81 °F · 700 mm28 in
- Jacmel 99 km · 28 °C83 °F · 584 mm23 in
- Les Cayes 151 km · 28 °C82 °F · 797 mm31 in
Frequently asked questions
What is the warmest month in Saint-Marc?
July is the warmest month in Saint-Marc, with an average high of 34 °C (93 °F) and an average low of 25 °C (76 °F).
What is the coldest month in Saint-Marc?
January is the coldest month, with an average high of 30 °C (86 °F) and an average low of 19 °C (67 °F).
When does it rain the most in Saint-Marc?
October is the wettest month with about 73 mm (2.9 in) of precipitation; February is the driest with about 18 mm (0.7 in).
What is the best time to visit Saint-Marc?
Judging by long-term averages, the most comfortable months are November–February.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.