Mao weather in September

In September, Mao sees average daytime highs of 33°C and overnight lows near 22°C, with 75 mm of rain across 11.9 wet days and about 12.1 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 31% of the time in September, and the air most often feels muggy.

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 Mao's 11th-clearest and 11th-windiest month. For the whole year in context, see Mao's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
22°
10th coldest
Rainfall
75 mm
11.9 wet days
Daylight
12 h 06 min
6:35 AM – 6:42 PM
Cloud cover
59%
11th clearest
Wind
8 km/h
11th windiest
Solar energy
5.89 kWh/m²
Travel score
3.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical September day in Mao reaches about 33°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 35°C. Set against its neighbours, September runs about 1°C cooler than August and about 1°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13322
23322
33322
43322
53322
63322
73322
83322
93322
103322
113322
123322
133322
143322
153322
163322
173322
183322
193322
203322
213322
223322
233322
243322
253322
263322
273322
283322
293322
303322

How September really feels in Mao

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.

Mao weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 18°325.1116.8
Feb29° / 19°28511.36.4
Mar30° / 19°457.411.95.8
Apr30° / 20°7110.312.44.9
May31° / 21°1101512.94.0
Jun33° / 22°539.213.23.7
Jul34° / 23°265.513.13.6
Aug34° / 23°477.512.73.3
Sep33° / 22°7511.912.13.3
Oct32° / 21°8412.911.53.9
Nov30° / 20°541011.15.2
Dec29° / 19°295.310.86.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% 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 48%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15347
25248
35248
45248
55248
65248
75248
85347
95347
105347
115347
125347
135248
145248
155347
165347
175347
185347
195347
205248
215248
225248
235149
245149
255050
265050
275050
285050
295050
305050

Chance of precipitation in September

Any precipitation

Mao gets around 75 mm of rain over 11.9 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 39% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
236
336
436
536
636
736
837
937
1037
1138
1238
1338
1439
1539
1639
1740
1840
1941
2041
2142
2242
2342
2442
2542
2642
2741
2841
2941
3041

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
126038
226038
326137
426137
526137
626236
726236
826236
926335
1026335
1126335
1226335
1336235
1436235
1536235
1636235
1736136
1836136
1936037
2026137
2126038
2226038
2326038
2425939
2525939
2625939
2716039
2816039
2916039
3025939

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 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
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:32 AM to 6:38 AM, and sunset from 6:56 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:326:56
212.46:336:55
312.46:336:54
412.36:336:53
512.36:336:52
612.36:336:51
712.36:346:50
812.36:346:49
912.26:346:48
1012.26:346:48
1112.26:346:47
1212.26:356:46
1312.26:356:45
1412.16:356:44
1512.16:356:43
1612.16:356:42
1712.16:366:41
1812.16:366:40
1912.16:366:39
2012.06:366:38
2112.06:366:37
2212.06:376:36
2312.06:376:35
2412.06:376:34
2511.96:376:33
2611.96:376:33
2711.96:386:32
2811.96:386:31
2911.96:386:30
3011.86:386:29

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.89 kWh/m².

For context, solar energy here swings from a low near 4.24 kWh/m² to a high of 6.63 kWh/m² in July across the year — September's 5.89 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.0Bright
126.0Bright
136.0Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.5Bright
Planning a trip in September

Hazard calendar for Mao

In seasonPeak

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

Mao 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 Mao?

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

3.3
Sightseeing
11th-best month of the year
5.9
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Mao.

What to pack for Mao in September

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

In September, Mao sees daytime highs around 33°C and nights near 22°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Mao 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 37 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
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Mao 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 Mao peaks around June 19 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 highHighJun 19UV 12Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct10Very high
Nov7Very high
Dec7High

Air quality in Mao 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 Mao is worst in June — around 30 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (February, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2030 µg/m³Feb 914 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar16Moderate
Apr18Moderate
May22Moderate
Jun30Moderate
Jul28Moderate
Aug25Moderate
Sep23Moderate
Oct23Moderate
Nov18Moderate
Dec14Moderate
Location & terrain

Where is Mao?

Mao sits at 19.5°N, 71.1°W, 76 m above sea level, in Dominican Republic. The nearest listed city is Esperanza, 11 km away.

San Ignacio de SabanetaRío GrandeSantiago de los CaballerosPuerto PlataTamborilMonte Llano

Topography around Mao

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

Within 3 km, the terrain around Mao has only modest variations in elevation — a maximum elevation change of 94 m around an average of 87 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 383 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,073 m.

The land around Mao is covered by trees (39%) and artificial surfaces (20%) within 3 km, trees (53%) within 16 km, and trees (45%), water (24%) and grassland (22%) within 80 km.

3 km
94 m
16 km
383 m
80 km
3,073 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Esperanza 11 km · Villa Bisonó 21 km · San Ignacio de Sabaneta 28 km · Río Grande 35 km · Santiago de los Caballeros 42 km · Puerto Plata 49 km · Tamboril 49 km · Monte Llano 54 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 Mao (19.5491°, -71.0781°, elevation 76 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).