Jacmel weather in September

In September, Jacmel sees average daytime highs of 28°C and overnight lows near 24°C, with 137 mm of rain across 22.3 wet days and about 12.1 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 27% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Jacmel's 12th-clearest and 7th-windiest month. For the whole year in context, see Jacmel's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
24°
10th coldest
Rainfall
137 mm
22.3 wet days
Daylight
12 h 06 min
5:41 AM – 5:48 PM
Cloud cover
62%
12th clearest
Wind
8 km/h
7th windiest
Solar energy
6.19 kWh/m²
Travel score
4.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Jacmel reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12824
22824
32824
42824
52824
62824
72824
82824
92824
102824
112824
122824
132824
142824
152824
162824
172824
182824
192824
202824
212824
222824
232824
242824
252824
262824
272824
282824
292824
302824

Jacmel weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 22°163.7118.3
Feb26° / 22°265.611.47.9
Mar26° / 22°6011.111.96.9
Apr26° / 23°9515.712.46.0
May27° / 24°13119.712.85.2
Jun28° / 24°7916.113.15.4
Jul28° / 24°8016.6135.5
Aug28° / 25°1242012.64.8
Sep28° / 24°13722.312.14.5
Oct27° / 24°14221.111.64.9
Nov27° / 23°7413.311.16.2
Dec26° / 22°255.210.97.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
24951
35149
45149
55149
65149
75248
85248
95149
105248
115248
125248
135149
145248
155149
165149
175050
185050
194951
204951
214753
224654
234654
244555
254555
264456
274555
284456
294555
304654

Chance of precipitation in September

Any precipitation

Jacmel gets around 137 mm of rain over 22.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 74% and peaks near 76% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
172
272
372
472
572
672
773
873
973
1074
1174
1275
1375
1475
1575
1676
1776
1876
1976
2076
2176
2276
2376
2476
2575
2675
2775
2874
2974
3074

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 98% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
10991
20991
30991
40991
50991
60991
70991
80991
90991
100991
110991
120982
130982
140982
150991
160991
170991
180991
190991
200991
210991
220991
230991
240991
250991
260991
270991
281981
291981
301981

Wind in September

Winds average 8 km/h in September.

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

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over September. Sunrise moves from 5:39 AM to 5:44 AM, and sunset from 6:01 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:396:01
212.35:396:00
312.35:395:59
412.35:395:58
512.35:405:57
612.35:405:56
712.35:405:56
812.25:405:55
912.25:405:54
1012.25:405:53
1112.25:415:52
1212.25:415:51
1312.25:415:50
1412.15:415:49
1512.15:415:48
1612.15:415:48
1712.15:425:47
1812.15:425:46
1912.05:425:45
2012.05:425:44
2112.05:425:43
2212.05:425:42
2312.05:435:41
2412.05:435:40
2511.95:435:39
2611.95:435:39
2711.95:435:38
2811.95:435:37
2911.95:445:36
3011.95:445:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.19 kWh/m².

For context, solar energy here swings from a low near 4.75 kWh/m² to a high of 6.98 kWh/m² in July across the year — September's 6.19 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.4Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.4Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.2Intense
166.2Intense
176.2Intense
186.1Intense
196.1Intense
206.1Intense
216.0Intense
226.0Intense
236.0Bright
245.9Bright
255.9Bright
265.9Bright
275.8Bright
285.8Bright
295.8Bright
305.7Bright
Planning a trip in September

Hazard calendar for Jacmel

In seasonPeak

In September, Jacmel sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

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

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

Is September a good time to visit Jacmel?

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

4.5
Sightseeing
12th-best month of the year
4.8
Beach & pool
12th-best month of the year

September is a reasonable time to visit Jacmel for sightseeing.

What to pack for Jacmel in September

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

In September, Jacmel sees daytime highs around 28°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 22 days see rain.

light clothesrain gearsun protection

Sea temperature near Jacmel in September

The nearest coast averages about 29°C in September — 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 March 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 Jacmel in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jacmel peaks around August 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighAug 20UV 12Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb9Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul10Very high
Aug12Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Jacmel in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Jacmel is worst in June — around 29 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (December, 8 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2329 µg/m³Dec 238 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar10Good
Apr11Good
May18Moderate
Jun29Moderate
Jul29Moderate
Aug23Moderate
Sep17Moderate
Oct16Moderate
Nov10Good
Dec8Good
Location & terrain

Where is Jacmel?

Jacmel sits at 18.2°N, 72.5°W, 29 m above sea level, in Haiti. The nearest listed city is Léogâne, 32 km away.

LéogâneGrangwavGressierKenscoffCarrefourPort-au-PrincePétionvilleTigwav

Topography around Jacmel

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

Within 3 km, the terrain around Jacmel has only modest variations in elevation — a maximum elevation change of 222 m around an average of 31 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 944 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,681 m.

The land around Jacmel is covered by trees (43%) and water (26%) within 3 km, water (37%), trees (35%) and grassland (27%) within 16 km, and water (52%) and grassland (28%) within 80 km.

3 km
222 m
16 km
944 m
80 km
2,681 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Léogâne 32 km · Grangwav 32 km · Gressier 34 km · Kenscoff 36 km · Carrefour 36 km · Port-au-Prince 40 km · Pétionville 41 km · Tigwav 41 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 Jacmel (18.2357°, -72.5369°, elevation 29 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).