Santo Domingo Este weather in September

In September, Santo Domingo Este sees average daytime highs of 29°C and overnight lows near 25°C, with 148 mm of rain across 22.7 wet days and about 12.1 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 32% of the time in September, and the air most often feels miserable.

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 Santo Domingo Este's 12th-clearest and 12th-windiest month. For the whole year in context, see Santo Domingo Este's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
25°
11th coldest
Rainfall
148 mm
22.7 wet days
Daylight
12 h 06 min
6:31 AM – 6:37 PM
Cloud cover
60%
12th clearest
Wind
11 km/h
12th windiest
Solar energy
5.5 kWh/m²
Travel score
3.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Santo Domingo Este reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13025
23025
33025
43025
53025
63025
73025
83025
93025
103025
112925
122925
132925
142925
152925
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925

How September really feels in Santo Domingo Este

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 Este weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 23°3311.8116.7
Feb27° / 22°2810.111.46.8
Mar27° / 23°3410.711.96.7
Apr28° / 24°5714.412.45.9
May28° / 24°11321.712.94.4
Jun29° / 25°11422.913.13.9
Jul30° / 25°12222.7133.9
Aug30° / 25°14723.512.63.7
Sep29° / 25°14822.712.13.8
Oct29° / 25°13622.411.64.0
Nov28° / 24°8716.811.15.1
Dec28° / 23°4211.310.96.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25149
35149
45248
55248
65248
75248
85248
95248
105149
115149
125149
135149
145050
155050
165050
174951
184951
194852
204852
214753
224753
234753
244753
254654
264753
274753
284852
294753
304753

Chance of precipitation in September

Any precipitation

Santo Domingo Este gets around 148 mm of rain over 22.7 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 76% and peaks near 80% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
175
274
373
473
573
672
772
872
972
1072
1173
1273
1373
1474
1574
1675
1776
1876
1977
2078
2178
2279
2379
2479
2579
2680
2780
2879
2979
3079

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 56% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
14159
24159
34060
44060
54060
63961
73961
83961
93961
104060
114060
124060
134159
144258
154258
164357
174456
184555
194654
204753
214753
224852
234951
245050
255050
265149
275248
285347
295347
305446

Wind in September

Winds average 11 km/h in September, the calmest month.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 6:28 AM to 6:33 AM, and sunset from 6:50 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:286:50
212.46:286:49
312.36:286:48
412.36:296:48
512.36:296:47
612.36:296:46
712.36:296:45
812.26:296:44
912.26:296:43
1012.26:306:42
1112.26:306:41
1212.26:306:40
1312.26:306:40
1412.16:306:39
1512.16:306:38
1612.16:316:37
1712.16:316:36
1812.16:316:35
1912.06:316:34
2012.06:316:33
2112.06:316:32
2212.06:326:31
2312.06:326:30
2412.06:326:30
2511.96:326:29
2611.96:326:28
2711.96:336:27
2811.96:336:26
2911.96:336:25
3011.96:336:24

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.5 kWh/m².

For context, solar energy here swings from a low near 4.07 kWh/m² to a high of 6.06 kWh/m² in June across the year — September's 5.5 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.4Bright
195.4Bright
205.4Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.1Bright
Planning a trip in September

Hazard calendar for Santo Domingo Este

In seasonPeak

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

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

Santo Domingo Este's rainy season runs May–November, 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 Este?

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

3.8
Sightseeing
11th-best month of the year
4.9
Beach & pool
12th-best month of the year

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

What to pack for Santo Domingo Este in September

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

In September, Santo Domingo Este sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Santo Domingo Este 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 13 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
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec28Warm

UV index in Santo Domingo Este 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 Este peaks around August 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 highAug 16UV 12Dec 13UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct10Very high
Nov7Very high
Dec7High

Air quality in Santo Domingo Este 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 Este is worst in June — around 31 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 15 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2130 µg/m³Dec 2015 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb16Moderate
Mar17Moderate
Apr18Moderate
May23Moderate
Jun31Moderate
Jul29Moderate
Aug25Moderate
Sep23Moderate
Oct24Moderate
Nov18Moderate
Dec15Moderate
Location & terrain

Where is Santo Domingo Este?

Santo Domingo Este sits at 18.5°N, 69.8°W, 41 m above sea level, in Dominican Republic. The nearest listed city is Villa Francisca, 4.0 km away.

Topography around Santo Domingo Este

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

Within 3 km, the terrain around Santo Domingo Este has only modest variations in elevation — a maximum elevation change of 54 m around an average of 28 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 73 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,231 m.

The land around Santo Domingo Este is covered by artificial surfaces (77%) within 3 km, water (38%) and artificial surfaces (26%) within 16 km, and trees (43%), water (31%) and grassland (20%) within 80 km.

3 km
54 m
16 km
73 m
80 km
2,231 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Villa Francisca 4.0 km · Santo Domingo 5.0 km · Ciudad Nueva 5.0 km · Villa Consuelo 6.0 km · Cristo Rey 9.0 km · Bella Vista 11 km · Santo Domingo Oeste 16 km · Bajos de Haina 21 km

Dominican Republic travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
120 V · 60 Hz
Prices
≈ 39% of US
price level, 2025
GDP per capita
$11,059
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
45%
of population, 2024
Homicide rate
10.9
per 100k, 2023
Road deaths
64.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 503

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 Este (18.4851°, -69.8476°, elevation 41 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).