Saint-Marc climate

Name: Saint-Marc
Address: HT

Saint-Marc is warmest in July, with average highs of 32 °C, and coldest in January, when nights average 22 °C. September is the wettest month (101 mm) and January the driest (12 mm). Figures are 1991–2020 climate normals.

Across a full year Saint-Marc averages 644 mm of rain and 365 days above 25 °C.

Haiti · population 266,642 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 32 °C
Coldest month January 22 °C
Driest month January 12 mm
Wettest month September 101 mm
Least cloud February 23 % cloud
Hottest on record July 40 °C
Coldest on record January 17 °C
Warmest sea August 30 °C

What to expectSaint-Marc through the year

Saint-Marc has a clear annual cycle: average daily highs run from 30 °C in January to 32 °C in July, a swing of 3.2 °C in mean temperature across the year.

Counted across a normal year, 365 days a year reach 25 °C, 256 of them reach 30 °C. The warmest reading in the 1991–2020 record is 40 °C, in July.

Rain is strongly seasonal. September averages 101 mm against 12 mm in January — 8.5 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Saint-Marc is warmest in August at 30 °C and coldest in February at 27 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	29.8 °C	12 mm	23 %
February	30.0 °C	13 mm	23 %
March	30.2 °C	22 mm	27 %
April	30.6 °C	43 mm	34 %
May	30.8 °C	83 mm	53 %
June	31.6 °C	65 mm	58 %
July	32.4 °C	65 mm	51 %
August	32.2 °C	88 mm	57 %
September	31.5 °C	101 mm	59 %
October	30.8 °C	92 mm	56 %
November	30.3 °C	48 mm	42 %
December	30.1 °C	12 mm	28 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	29.8 °C	22.2 °C	25.7 °C	34.9 °C	17.2 °C	31	12
February	30.0 °C	22.2 °C	25.9 °C	35.2 °C	18.0 °C	28	13
March	30.2 °C	22.7 °C	26.2 °C	35.4 °C	18.3 °C	31	15
April	30.6 °C	23.7 °C	26.9 °C	35.9 °C	20.7 °C	30	20
May	30.8 °C	24.6 °C	27.5 °C	37.1 °C	21.0 °C	31	23
June	31.6 °C	25.4 °C	28.4 °C	36.9 °C	23.2 °C	30	28
July	32.4 °C	25.6 °C	28.9 °C	39.5 °C	23.5 °C	31	31
August	32.2 °C	25.8 °C	28.8 °C	38.7 °C	23.5 °C	31	30
September	31.5 °C	25.4 °C	28.2 °C	37.4 °C	23.2 °C	30	28
October	30.8 °C	24.9 °C	27.6 °C	36.2 °C	21.5 °C	31	23
November	30.3 °C	23.9 °C	26.8 °C	35.6 °C	20.5 °C	30	17
December	30.1 °C	22.8 °C	26.2 °C	34.4 °C	18.3 °C	31	16

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	12 mm	3	11 h/day	23 %	71 %	16 km/h	27.6 °C
February	13 mm	3	12 h/day	23 %	70 %	17 km/h	27.3 °C
March	22 mm	6	12 h/day	27 %	69 %	17 km/h	27.3 °C
April	43 mm	11	13 h/day	34 %	71 %	15 km/h	27.8 °C
May	83 mm	17	13 h/day	53 %	75 %	13 km/h	28.5 °C
June	65 mm	17	13 h/day	58 %	76 %	13 km/h	29.2 °C
July	65 mm	16	13 h/day	51 %	74 %	14 km/h	29.7 °C
August	88 mm	19	13 h/day	57 %	75 %	13 km/h	30.0 °C
September	101 mm	20	12 h/day	59 %	77 %	12 km/h	30.0 °C
October	92 mm	19	12 h/day	56 %	79 %	12 km/h	29.8 °C
November	48 mm	10	11 h/day	42 %	76 %	14 km/h	29.2 °C
December	12 mm	3	11 h/day	28 %	72 %	15 km/h	28.4 °C

How Saint-Marc compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Saint-Marc	32 °C	22 °C	644 mm	365
Dessalines · Haiti	34 °C	21 °C	966 mm	365
Carrefour · Haiti	33 °C	21 °C	1,285 mm	365
Port-au-Prince · Haiti	34 °C	21 °C	1,454 mm	365
Delmas · Haiti	33 °C	21 °C	1,454 mm	364
Pétionville · Haiti	31 °C	19 °C	1,532 mm	363
Port-de-Paix · Haiti	32 °C	22 °C	1,000 mm	360

Where Saint-Marc ranks

Ranking	Position	Value
The warmest places in North America in November	6thof 50	30 °C
The warmest places in North America in December	7thof 50	30 °C
The warmest places in North America in January	11thof 50	30 °C
The warmest places in North America in October	17thof 50	31 °C
The warmest places in North America year-round	17thof 50	31 °C
The warmest places in North America in February	19thof 50	30 °C

Planning a trip? See the best time to visit Saint-Marc.

QuestionsCommon questions about Saint-Marc’s climate

When is the best time to visit Saint-Marc?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, July is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Saint-Marc get?

In July, the warmest month, daily highs average 32 °C. About 256 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.

How cold does it get in winter?

Nights average 22 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Saint-Marc?

September, averaging 101 mm over 20 days with rain. The driest month is January with 12 mm. The year as a whole averages 644 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Saint-Marc rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.