Santiago de Cuba weather in September

In September, Santiago de Cuba sees average daytime highs of 30°C and overnight lows near 24°C, with 115 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 30°C through the month. The sky is clear or mostly clear about 22% 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 Santiago de Cuba's 11th-clearest and 12th-windiest month. For the whole year in context, see Santiago de Cuba's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
24°
10th coldest
Rainfall
115 mm
20 wet days
Daylight
12 h 06 min
5:54 AM – 6:01 PM
Cloud cover
63%
11th clearest
Wind
7 km/h
12th windiest
Solar energy
5.69 kWh/m²
Travel score
3.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical September day in Santiago de Cuba reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°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 about 1°C cooler than August and about 1°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024

How September really feels in Santiago de Cuba

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.

Santiago de Cuba 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
Jan28° / 21°122.610.98.0
Feb28° / 20°122.711.37.9
Mar28° / 21°285.511.97.1
Apr29° / 22°468.112.46.1
May29° / 23°11415.612.94.8
Jun30° / 24°8013.313.24.4
Jul31° / 24°5612.613.14.3
Aug31° / 25°8214.912.74.0
Sep30° / 24°1152012.13.7
Oct29° / 24°11117.311.54.4
Nov29° / 23°597.811.16.0
Dec28° / 21°223.410.87.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 23% of September, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24852
34753
44852
54951
64852
74852
84852
94951
104753
114852
124852
134654
144654
154654
164654
174654
184654
194555
204456
214456
224357
234357
244357
254258
264258
274258
284258
294159
304258

Chance of precipitation in September

Any precipitation

Santiago de Cuba gets around 115 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 69% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
161
261
362
462
562
663
763
864
964
1065
1166
1266
1367
1468
1568
1669
1769
1869
1969
2069
2169
2269
2369
2468
2568
2667
2767
2866
2966
3065

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
11936
21936
31936
41936
51936
61936
71936
81936
91936
101936
111936
121936
131936
141936
151936
161936
171936
181936
191936
201945
211945
221945
231954
241954
251954
261954
271954
281954
291954
301954

Wind in September

Winds average 7 km/h in September, the calmest month.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
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 5:51 AM to 5:57 AM, and sunset from 6:15 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:516:15
212.45:516:14
312.45:516:13
412.35:526:12
512.35:526:11
612.35:526:10
712.35:526:10
812.35:536:09
912.25:536:08
1012.25:536:07
1112.25:536:06
1212.25:536:05
1312.25:546:04
1412.25:546:03
1512.15:546:02
1612.15:546:01
1712.15:546:00
1812.15:555:59
1912.15:555:58
2012.05:555:57
2112.05:555:56
2212.05:565:55
2312.05:565:54
2412.05:565:53
2511.95:565:52
2611.95:565:51
2711.95:575:51
2811.95:575:50
2911.95:575:49
3011.85:575:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.69 kWh/m².

For context, solar energy here swings from a low near 4.25 kWh/m² to a high of 6.69 kWh/m² in July across the year — September's 5.69 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Bright
36.0Bright
46.0Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.7Bright
165.7Bright
175.7Bright
185.6Bright
195.6Bright
205.6Bright
215.5Bright
225.5Bright
235.5Bright
245.4Bright
255.4Bright
265.4Bright
275.3Bright
285.3Bright
295.3Bright
305.2Bright
Planning a trip in September

Hazard calendar for Santiago de Cuba

In seasonPeak

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

Santiago de Cuba 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 Santiago de Cuba?

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

3.7
Sightseeing
12th-best month of the year
5.2
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Santiago de Cuba.

What to pack for Santiago de Cuba in September

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

In September, Santiago de Cuba sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Santiago de Cuba in September

The nearest coast averages about 30°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 17 km away) is warmest in September at about 30°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°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr28Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov29Tropical
Dec28Warm

UV index in Santiago de Cuba 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 Santiago de Cuba peaks around June 14 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 14UV 12Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr11Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct10Very high
Nov7Very high
Dec7High

Air quality in Santiago de Cuba 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 Santiago de Cuba is worst in June — around 25 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2124 µg/m³Dec 167 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar10Good
Apr12Good
May15Moderate
Jun25Moderate
Jul23Moderate
Aug19Moderate
Sep15Moderate
Oct12Moderate
Nov8Good
Dec7Good
Location & terrain

Where is Santiago de Cuba?

Santiago de Cuba sits at 20.0°N, 75.8°W, 33 m above sea level, in Cuba. The nearest listed city is San Luis, 19 km away.

GuantánamoCuetoSan GermánJiguaníGuisa

Topography around Santiago de Cuba

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

Within 3 km, the terrain around Santiago de Cuba has only modest variations in elevation — a maximum elevation change of 125 m around an average of 29 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 993 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,730 m.

The land around Santiago de Cuba is covered by artificial surfaces (56%) and trees (31%) within 3 km, trees (59%) and water (26%) within 16 km, and trees (47%) and water (32%) within 80 km.

3 km
125 m
16 km
993 m
80 km
1,730 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: San Luis 19 km · Palma Soriano 28 km · Contramaestre 54 km · Guantánamo 65 km · Cueto 70 km · San Germán 72 km · Jiguaní 74 km · Guisa 79 km

Cuba travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C / L
110 V · 60 Hz
Prices
≈ 39% of US
price level, 2011
GDP per capita
$9,605
2020
Happiness
5.4 / 10
World Happiness, 2011
Homicide rate
4.5
per 100k, 2019
Road deaths
8.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 515
Religion
Christian 59%none 23%folk religion 18%

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 Santiago de Cuba (20.0229°, -75.8217°, elevation 33 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).