Les Cayes weather in December

In December, Les Cayes sees average daytime highs of 27°C and overnight lows near 23°C, with 27 mm of rain across 6 wet days and about 10.9 hours of daylight. It is the 9th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 69% of the time in December, and the air most often feels muggy.

Daylight stretches from about 11 hours at the start of December to 10 h 54 min by month's end. Set against the rest of the year, December is Les Cayes's 3rd-clearest and 10th-windiest month. For the whole year in context, see Les Cayes's year-round climate.

Daytime high
27°
9th warmest
Overnight low
23°
4th coldest
Rainfall
27 mm
6 wet days
Daylight
10 h 54 min
6:24 AM – 5:19 PM
Cloud cover
34%
3rd clearest
Wind
9 km/h
10th windiest
Solar energy
4.62 kWh/m²
Travel score
7.6
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical December day in Les Cayes reaches about 27°C in the afternoon and slips back to 23°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12723
22723
32723
42723
52723
62723
72723
82723
92723
102723
112723
122723
132723
142723
152723
162723
172723
182723
192723
202723
212723
222723
232723
242722
252722
262722
272722
282622
292622
302622
312622

How December really feels in Les Cayes

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Les Cayes weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 22°235.1118.0
Feb26° / 22°225.711.47.8
Mar26° / 22°411011.97.1
Apr27° / 23°6013.112.46.4
May27° / 24°10015.612.85.7
Jun28° / 25°621013.15.9
Jul29° / 25°5410135.7
Aug29° / 25°7812.512.65.3
Sep29° / 25°10016.412.14.8
Oct28° / 24°14518.311.65.2
Nov27° / 24°8412.211.16.3
Dec27° / 23°27610.97.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 69% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 19%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17624
27723
37822
47921
57921
67921
77921
88020
97921
107921
117921
127921
137921
147921
158020
168020
178020
188020
198119
208218
218218
228218
238317
248416
258416
268515
278515
288614
298713
308713
318713

Chance of precipitation in December

Any precipitation

Les Cayes gets around 27 mm of rain over 6 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 20% and peaks near 25% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
125
224
323
423
522
622
721
821
921
1020
1120
1220
1320
1420
1519
1619
1719
1819
1919
2018
2118
2218
2318
2417
2517
2617
2717
2817
2917
3017
3117

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the muggy band about 57% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1024652
2024751
3034850
4034849
5034948
6035047
7035047
8035146
9035245
10035344
11045244
12045343
13045442
14045541
15045640
16045739
17055738
18155737
19155836
20155935
21165934
22166033
23166132
24166231
25166330
26166429
27166528
28166627
29166825
30166924
31057322

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 hours at the start of December to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:15 AM to 6:30 AM, and sunset from 5:14 PM to 5:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:155:14
211.06:165:15
311.06:165:15
411.06:175:15
511.06:185:15
611.06:185:15
710.96:195:16
810.96:195:16
910.96:205:16
1010.96:205:16
1110.96:215:17
1210.96:225:17
1310.96:225:17
1410.96:235:18
1510.96:235:18
1610.96:245:19
1710.96:245:19
1810.96:255:19
1910.96:255:20
2010.96:265:20
2110.96:265:21
2210.96:275:21
2310.96:275:22
2410.96:285:22
2510.96:285:23
2610.96:295:23
2710.96:295:24
2810.96:295:24
2910.96:305:25
3010.96:305:25
3110.96:305:26

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.62 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.83 kWh/m² in July across the year — December's 4.62 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in December

Hazard calendar for Les Cayes

In seasonPeak

None of Les Cayes's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Les Cayes sits in the Atlantic hurricane belt; the season peaks August–October.

Les Cayes's rainy season runs August–November, when most of the year's rain falls.

Les Cayes sees seasonal dust haze (July), heaviest in July.

Atlantic hurricane
Rainy season
Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Les Cayes?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.6
Sightseeing
3rd-best month of the year
7.6
Beach & pool
2nd-best month of the year

December is one of the better times to visit Les Cayes for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Les Cayes in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Les Cayes sees daytime highs around 27°C and nights near 23°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Les Cayes in December

The nearest coast averages about 28°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in September at about 29°C and coldest in February near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr27Warm
May28Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Les Cayes in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Les Cayes peaks around June 12 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highJun 12UV 12Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec7High

Air quality in Les Cayes in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Les Cayes is worst in July — around 29 µg/m³ PM2.5 (moderate), about 4.0× the cleanest month (December, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 929 µg/m³Dec 227 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar9Good
Apr11Good
May18Moderate
Jun29Moderate
Jul29Moderate
Aug23Moderate
Sep16Moderate
Oct15Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Les Cayes?

Les Cayes sits at 18.2°N, 73.7°W, 1 m above sea level, in Haiti. The nearest listed city is Jérémie, 64 km away.

JérémieMiragoâneTigwavGrangwavLéogâneJacmelGressierArcahaie

Topography around Les Cayes

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Les Cayes.

Within 3 km, the terrain around Les Cayes has only modest variations in elevation — a maximum elevation change of 38 m around an average of 4 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 354 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,322 m.

The land around Les Cayes is covered by water (45%) within 3 km, water (43%) and grassland (28%) within 16 km, and water (64%) and trees (23%) within 80 km.

3 km
38 m
16 km
354 m
80 km
2,322 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
December weather nearby: Jérémie 64 km · Miragoâne 75 km · Tigwav 97 km · Grangwav 107 km · Léogâne 123 km · Jacmel 128 km · Gressier 135 km · Arcahaie 145 km

Haiti travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type A / B
110 V · 60 Hz
Prices
≈ 86% of US
price level, 2025
GDP per capita
$2,694
2025
Happiness
3.6 / 10
World Happiness, 2020
Homicide rate
41.2
per 100k, 2023
Road deaths
18.8
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 444
Religion
Catholic 55%Protestant 29%none 10%other 5%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Les Cayes (18.192°, -73.7495°, elevation 1 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).