San Juan de la Maguana weather in September

In September, San Juan de la Maguana sees average daytime highs of 28°C and overnight lows near 19°C, with 111 mm of rain across 20.2 wet days and about 12.1 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 20% 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 San Juan de la Maguana's 10th-clearest and 10th-windiest month. For the whole year in context, see San Juan de la Maguana's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
19°
11th coldest
Rainfall
111 mm
20.2 wet days
Daylight
12 h 06 min
6:36 AM – 6:42 PM
Cloud cover
65%
10th clearest
Wind
4 km/h
10th windiest
Solar energy
5.77 kWh/m²
Travel score
4.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in San Juan de la Maguana reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12819
22819
32819
42819
52819
62819
72819
82819
92819
102819
112819
122819
132819
142819
152819
162819
172819
182819
192819
202819
212819
222819
232719
242719
252719
262719
272719
282719
292719
302719

San Juan de la Maguana weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 16°143.8118.1
Feb26° / 16°266.211.47.6
Mar26° / 17°7112.511.96.5
Apr26° / 18°10116.712.45.7
May26° / 19°12219.712.95.2
Jun27° / 19°7416.713.15.4
Jul28° / 19°6215.9135.5
Aug28° / 19°10318.512.64.9
Sep28° / 19°11120.212.14.8
Oct27° / 19°10418.311.65.3
Nov26° / 18°5911.411.16.5
Dec26° / 16°184.210.97.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 24% of September, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34456
44456
54456
64555
74555
84555
94555
104456
114555
124555
134555
144456
154456
164456
174357
184357
194456
204357
214357
224258
234357
244258
254258
264159
274159
284258
294258
304258

Chance of precipitation in September

Any precipitation

San Juan de la Maguana gets around 111 mm of rain over 20.2 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 67% and peaks near 71% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
165
264
364
464
564
664
764
864
965
1065
1166
1266
1367
1468
1569
1669
1770
1870
1971
2071
2171
2271
2371
2470
2570
2669
2768
2868
2967
3067

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 83% of days. Sticky, muggy-or-worse air turns up on roughly 84% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
114842
214842
315832
415832
515832
616822
716822
816822
917812
1017812
1117812
1217812
1316822
1416822
1516822
1615841
1715841
1815841
1915841
2015841
2115841
2215841
2315841
2415850
2515850
2615850
2715850
2815841
2915841
3016831

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 6:33 AM to 6:39 AM, and sunset from 6:56 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:336:56
212.46:346:55
312.36:346:54
412.36:346:53
512.36:346:52
612.36:346:51
712.36:346:51
812.36:356:50
912.26:356:49
1012.26:356:48
1112.26:356:47
1212.26:356:46
1312.26:366:45
1412.16:366:44
1512.16:366:43
1612.16:366:42
1712.16:366:41
1812.16:366:41
1912.16:376:40
2012.06:376:39
2112.06:376:38
2212.06:376:37
2312.06:376:36
2412.06:386:35
2511.96:386:34
2611.96:386:33
2711.96:386:32
2811.96:386:31
2911.96:396:31
3011.86:396:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.77 kWh/m².

For context, solar energy here swings from a low near 4.49 kWh/m² to a high of 6.52 kWh/m² in July across the year — September's 5.77 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.4Bright
305.4Bright
Planning a trip in September

Is September a good time to visit San Juan de la Maguana?

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

4.8
Sightseeing
12th-best month of the year
5.1
Beach & pool
11th-best month of the year

September is a reasonable time to visit San Juan de la Maguana for sightseeing.

What to pack for San Juan de la Maguana in September

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

In September, San Juan de la Maguana sees daytime highs around 28°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near San Juan de la Maguana 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 61 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
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in San Juan de la Maguana in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Juan de la Maguana peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 24UV 13Dec 15UV 7
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in San Juan de la Maguana 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 San Juan de la Maguana 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 2230 µg/m³Feb 1014 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar16Moderate
Apr16Moderate
May21Moderate
Jun30Moderate
Jul29Moderate
Aug25Moderate
Sep22Moderate
Oct23Moderate
Nov18Moderate
Dec15Moderate
Location & terrain

Where is San Juan de la Maguana?

San Juan de la Maguana sits at 18.8°N, 71.2°W, 406 m above sea level, in Dominican Republic. The nearest listed city is Las Matas de Farfán, 31 km away.

Las Matas de FarfánNeibaConstanzaAzuaSanta Cruz de BarahonaJarabacoaSan Ignacio de SabanetaSan José de Ocoa

Topography around San Juan de la Maguana

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Juan de la Maguana.

Within 3 km, the terrain around San Juan de la Maguana has only modest variations in elevation — a maximum elevation change of 55 m around an average of 410 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,406 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,109 m.

The land around San Juan de la Maguana is covered by cropland (49%) and artificial surfaces (24%) within 3 km, trees (51%), grassland (24%) and cropland (22%) within 16 km, and trees (54%) and grassland (29%) within 80 km.

3 km
55 m
16 km
1,406 m
80 km
3,109 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Las Matas de Farfán 31 km · Neiba 41 km · Constanza 52 km · Azua 65 km · Santa Cruz de Barahona 68 km · Jarabacoa 71 km · San Ignacio de Sabaneta 76 km · San José de Ocoa 81 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 San Juan de la Maguana (18.8064°, -71.2263°, elevation 406 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. 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).