Cotuí weather in September

In September, Cotuí sees average daytime highs of 31°C and overnight lows near 22°C, with 90 mm of rain across 17.2 wet days and about 12.1 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°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 48 min by month's end. Set against the rest of the year, September is Cotuí's 10th-clearest and 8th-windiest month. For the whole year in context, see Cotuí's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
22°
11th coldest
Rainfall
90 mm
17.2 wet days
Daylight
12 h 06 min
6:32 AM – 6:38 PM
Cloud cover
62%
10th clearest
Wind
5 km/h
8th windiest
Solar energy
5.49 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 31°C through the month.

A typical September day in Cotuí reaches about 31°C in the afternoon and slips back to 22°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°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)
13122
23122
33122
43122
53122
63122
73122
83122
93122
103122
113122
123122
133122
143122
153122
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122

How September really feels in Cotuí

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.

Cotuí weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°5411.6116.6
Feb27° / 18°4710.211.46.6
Mar28° / 19°6210.211.96.4
Apr29° / 20°10113.712.45.3
May29° / 21°14916.912.94.5
Jun30° / 22°6813.813.14.2
Jul31° / 22°7817.7134.0
Aug31° / 22°8818.312.63.8
Sep31° / 22°9017.212.13.8
Oct30° / 22°9716.911.64.2
Nov28° / 21°9615.611.15.3
Dec27° / 19°5911.910.96.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in September.

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 (%)
14852
24852
34852
44951
54951
64951
74951
84951
95050
105050
115149
125149
135050
145050
155149
165050
175050
185149
195050
205050
215050
224951
234951
244852
254753
264654
274753
284654
294753
304753

Chance of precipitation in September

Any precipitation

Cotuí gets around 90 mm of rain over 17.2 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 57% and peaks near 60% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
157
256
356
455
555
655
754
854
954
1054
1154
1254
1355
1455
1556
1656
1757
1858
1959
2060
2160
2260
2360
2460
2560
2660
2760
2859
2959
3059

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 (%)
14942
24942
34942
44942
54942
64942
74942
84942
94942
104951
115941
125941
135941
145941
155941
166931
176931
186931
196931
207930
217930
227930
238920
248920
258920
268920
279910
289910
299910
309910

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 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 36 minutes over September. Sunrise moves from 6:29 AM to 6:35 AM, and sunset from 6:52 PM to 6:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:296:52
212.46:296:51
312.36:296:50
412.36:306:49
512.36:306:48
612.36:306:47
712.36:306:46
812.36:306:45
912.26:306:45
1012.26:316:44
1112.26:316:43
1212.26:316:42
1312.26:316:41
1412.16:316:40
1512.16:326:39
1612.16:326:38
1712.16:326:37
1812.16:326:36
1912.16:326:35
2012.06:326:34
2112.06:336:33
2212.06:336:33
2312.06:336:32
2412.06:336:31
2511.96:336:30
2611.96:346:29
2711.96:346:28
2811.96:346:27
2911.96:346:26
3011.86:356:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.49 kWh/m².

For context, solar energy here swings from a low near 3.87 kWh/m² to a high of 6.04 kWh/m² in June across the year — September's 5.49 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
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.5Bright
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 Cotuí

In seasonPeak

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

Cotuí 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 Cotuí?

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
5.5
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Cotuí.

What to pack for Cotuí in September

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

In September, Cotuí sees daytime highs around 31°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Cotuí 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 46 km away) is warmest in September at about 29°C and coldest in February near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr26Warm
May27Warm
Jun28Warm
Jul28Warm
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Cotuí 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 Cotuí peaks around March 23 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 highHighMar 23UV 12Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Cotuí 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 Cotuí is worst in June — around 31 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (February, 17 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2131 µg/m³Feb 1417 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb17Moderate
Mar18Moderate
Apr18Moderate
May23Moderate
Jun31Moderate
Jul29Moderate
Aug26Moderate
Sep25Moderate
Oct26Moderate
Nov21Moderate
Dec18Moderate
Location & terrain

Where is Cotuí?

Cotuí sits at 19.1°N, 70.2°W, 58 m above sea level, in Dominican Republic. The nearest listed city is San Francisco de Macorís, 29 km away.

San Francisco de MacorísBonaoSabana Grande de BoyáVilla AltagraciaLa VegaSalcedoMonte PlataNagua

Topography around Cotuí

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

Within 3 km, the terrain around Cotuí has significant variations in elevation — a maximum elevation change of 282 m around an average of 76 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 545 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,805 m.

The land around Cotuí is covered by trees (48%) and grassland (32%) within 3 km, trees (47%) and grassland (32%) within 16 km, and trees (61%) within 80 km.

3 km
282 m
16 km
545 m
80 km
2,805 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: San Francisco de Macorís 29 km · Bonao 30 km · Sabana Grande de Boyá 40 km · Villa Altagracia 42 km · La Vega 44 km · Salcedo 46 km · Monte Plata 47 km · Nagua 49 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 Cotuí (19.0539°, -70.1512°, elevation 58 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).