Boca Chica weather in September

In September, Boca Chica sees average daytime highs of 29°C and overnight lows near 26°C, with 140 mm of rain across 20 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 30% 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 Boca Chica's 12th-clearest and 11th-windiest month. For the whole year in context, see Boca Chica's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
26°
11th coldest
Rainfall
140 mm
20 wet days
Daylight
12 h 06 min
6:30 AM – 6:36 PM
Cloud cover
60%
12th clearest
Wind
12 km/h
11th windiest
Solar energy
5.44 kWh/m²
Travel score
4.2
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 Boca Chica reaches about 29°C in the afternoon and slips back to 26°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)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282926
292925
302925

How September really feels in Boca Chica

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.

Boca Chica 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°236.5117.5
Feb27° / 23°19511.47.7
Mar27° / 23°256.711.97.4
Apr28° / 24°461012.46.6
May28° / 25°10416.512.95.2
Jun29° / 25°8616.213.14.7
Jul29° / 26°9015.9134.7
Aug29° / 26°11518.112.64.4
Sep29° / 26°1402012.14.2
Oct29° / 25°12019.911.64.4
Nov28° / 24°8014.311.15.7
Dec28° / 24°317.410.97.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% 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
55149
65149
75149
85149
95050
105050
115050
124951
134951
144951
154951
164852
174852
184852
194753
204753
214753
224753
234753
244753
254852
264852
274852
284852
294852
304951

Chance of precipitation in September

Any precipitation

Boca Chica gets around 140 mm of rain over 20 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 66% and peaks near 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
163
263
362
462
562
662
762
862
962
1063
1163
1264
1364
1465
1565
1666
1767
1868
1969
2069
2170
2271
2371
2471
2571
2671
2771
2871
2971
3071

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
14753
24753
34753
44753
54753
64753
74753
84753
94654
104753
114753
124753
134753
144852
154852
164951
174951
184951
195050
205050
215149
225149
235248
245248
255347
265347
275446
285545
295644
305644

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

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 6:27 AM to 6:32 AM, and sunset from 6:49 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:276:49
212.46:276:48
312.36:276:47
412.36:286:47
512.36:286:46
612.36:286:45
712.36:286:44
812.26:286:43
912.26:286:42
1012.26:296:41
1112.26:296:40
1212.26:296:39
1312.26:296:39
1412.16:296:38
1512.16:296:37
1612.16:306:36
1712.16:306:35
1812.16:306:34
1912.06:306:33
2012.06:306:32
2112.06:306:31
2212.06:316:30
2312.06:316:29
2412.06:316:29
2511.96:316:28
2611.96:316:27
2711.96:326:26
2811.96:326:25
2911.96:326:24
3011.96:326:23

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.44 kWh/m².

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 6.05 kWh/m² in June across the year — September's 5.44 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
95.6Bright
105.6Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.1Bright
Planning a trip in September

Hazard calendar for Boca Chica

In seasonPeak

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

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

Boca Chica'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 Boca Chica?

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

4.2
Sightseeing
12th-best month of the year
5.4
Beach & pool
12th-best month of the year

September is a reasonable time to visit Boca Chica for sightseeing.

What to pack for Boca Chica in September

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

In September, Boca Chica sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Boca Chica 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 offshore 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 Boca Chica 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 Boca Chica 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
Aug13Extreme
Sep11Extreme
Oct10Very high
Nov7Very high
Dec7High

Air quality in Boca Chica 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 Boca Chica 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 Boca Chica?

Boca Chica sits at 18.4°N, 69.6°W, 12 m above sea level, in Dominican Republic. The nearest listed city is Quisqueya, 23 km away.

QuisqueyaSanto Domingo EsteVilla FranciscaSan Pedro de MacorisSanto DomingoCiudad NuevaVilla ConsueloBayaguana

Topography around Boca Chica

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

Within 3 km, the terrain around Boca Chica has only modest variations in elevation — a maximum elevation change of 31 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 56 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,706 m.

The land around Boca Chica is covered by water (38%), trees (28%) and grassland (21%) within 3 km, water (40%), grassland (31%) and trees (21%) within 16 km, and trees (36%), water (35%) and grassland (24%) within 80 km.

3 km
31 m
16 km
56 m
80 km
1,706 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Quisqueya 23 km · Santo Domingo Este 26 km · Villa Francisca 31 km · San Pedro de Macoris 31 km · Santo Domingo 31 km · Ciudad Nueva 31 km · Villa Consuelo 32 km · Bayaguana 34 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 Boca Chica (18.45°, -69.6°, elevation 12 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).