Santo Domingo weather in September

In September, Santo Domingo sees average daytime highs of 32°C and overnight lows near 24°C, with 148 mm of rain across 21.9 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 19% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Santo Domingo's 11th-clearest and 12th-windiest month. For the whole year in context, see Santo Domingo's year-round climate.

Daytime high
32°
4th warmest
Overnight low
24°
10th coldest
Rainfall
148 mm
21.9 wet days
Daylight
12 h 06 min
6:11 AM – 6:19 PM
Cloud cover
67%
11th clearest
Wind
9 km/h
12th windiest
Solar energy
5.37 kWh/m²
Travel score
3.0
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Santo Domingo reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113224
123224
133224
143224
153224
163224
173124
183124
193124
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123

How September really feels in Santo Domingo

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Santo Domingo weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°223.610.87.7
Feb28° / 18°24311.27.5
Mar29° / 19°204.211.86.5
Apr31° / 21°376.612.55.1
May31° / 22°12115.513.13.9
Jun32° / 24°15119.913.43.1
Jul32° / 24°9817.813.23.1
Aug33° / 24°11819.412.82.9
Sep32° / 24°14821.912.13.0
Oct30° / 23°10717.311.54.2
Nov28° / 21°367.410.96.6
Dec27° / 19°193.710.67.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24159
34159
44060
54060
64060
73961
83961
93862
103862
113862
123961
133961
143961
153961
163961
174060
184060
194159
204060
214060
224060
234060
244060
254060
263862
273862
283862
293862
303961

Chance of precipitation in September

Any precipitation

Santo Domingo gets around 148 mm of rain over 21.9 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 73% and peaks near 74% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
172
272
373
473
573
674
774
874
974
1073
1173
1273
1373
1473
1572
1672
1772
1872
1972
2072
2172
2272
2372
2473
2573
2673
2772
2872
2972
3071

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 93% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
10946
20946
30937
40937
50937
60937
70937
80937
90937
100928
110928
120928
130928
141918
151918
161918
171918
181927
191927
201927
211936
221936
231945
241945
251945
262944
272944
282944
292944
303934

Wind in September

Winds average 9 km/h in September, the calmest month.

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

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 30 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over September. Sunrise moves from 6:07 AM to 6:16 AM, and sunset from 6:34 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:076:34
212.46:076:33
312.46:086:32
412.46:086:31
512.46:086:30
612.36:086:29
712.36:096:28
812.36:096:27
912.36:096:26
1012.36:106:25
1112.26:106:24
1212.26:106:23
1312.26:116:22
1412.26:116:21
1512.26:116:20
1612.16:116:19
1712.16:126:18
1812.16:126:17
1912.16:126:16
2012.06:136:15
2112.06:136:14
2212.06:136:13
2312.06:146:12
2411.96:146:11
2511.96:146:10
2611.96:146:09
2711.96:156:08
2811.96:156:07
2911.86:156:06
3011.86:166:05

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.37 kWh/m².

For context, solar energy here swings from a low near 3.7 kWh/m² to a high of 6.49 kWh/m² in July across the year — September's 5.37 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.6Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.4Bright
155.4Bright
165.4Bright
175.3Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.2Bright
235.1Bright
245.1Bright
255.1Bright
265.0Bright
275.0Bright
285.0Bright
294.9Bright
304.9Bright
Planning a trip in September

Hazard calendar for Santo Domingo

In seasonPeak

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

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

Santo Domingo's rainy season runs May–October, when most of the year's rain falls.

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

Is September a good time to visit Santo Domingo?

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

3.0
Sightseeing
11th-best month of the year
4.7
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Santo Domingo.

What to pack for Santo Domingo in September

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

In September, Santo Domingo sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

Sea temperature near Santo Domingo 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 49 km away) is warmest in September at about 29°C and coldest in February near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb25Warm
Mar25Warm
Apr26Warm
May27Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov27Warm
Dec26Warm

UV index in Santo Domingo 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 Santo Domingo peaks around June 13 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighJun 13UV 12Dec 16UV 6
UV index (midday)Level
Jan7High
Feb9Very high
Mar11Extreme
Apr11Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep11Extreme
Oct10Very high
Nov7High
Dec6High

Air quality in Santo Domingo 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 Santo Domingo is worst in July — around 23 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (November, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1222 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar13Moderate
Apr14Moderate
May14Moderate
Jun22Moderate
Jul23Moderate
Aug19Moderate
Sep15Moderate
Oct11Good
Nov8Good
Dec8Good
Location & terrain

Where is Santo Domingo?

Santo Domingo sits at 22.6°N, 80.2°W, 51 m above sea level, in Cuba. The nearest listed city is Lajas, 20 km away.

Topography around Santo Domingo

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

Within 3 km, the terrain around Santo Domingo has only modest variations in elevation — a maximum elevation change of 22 m around an average of 47 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 126 m; within 80 km, large variations in elevation — a maximum elevation change of 1,099 m.

The land around Santo Domingo is covered by grassland (41%) and trees (35%) within 3 km, trees (48%) and grassland (35%) within 16 km, and trees (37%), grassland (26%) and water (26%) within 80 km.

3 km
22 m
16 km
126 m
80 km
1,099 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Lajas 20 km · Cifuentes 21 km · Ranchuelo 26 km · Cruces 27 km · Sagua la Grande 30 km · Santa Clara 35 km · Encrucijada 39 km · Palmira 41 km

Cuba travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C / L
110 V · 60 Hz
Prices
≈ 39% of US
price level, 2011
GDP per capita
$9,605
2020
Happiness
5.4 / 10
World Happiness, 2011
Homicide rate
4.5
per 100k, 2019
Road deaths
8.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 515
Religion
Christian 59%none 23%folk religion 18%

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 Santo Domingo (22.5867°, -80.2426°, elevation 51 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).