Guantánamo weather in May

In May, Guantánamo sees average daytime highs of 31°C and overnight lows near 22°C, with 139 mm of rain across 17.2 wet days and about 12.9 hours of daylight. It is the 5th-warmest and 1st-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 26% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 42 min at the start of May to 13 h 06 min by month's end. Set against the rest of the year, May is Guantánamo's 9th-clearest and 9th-windiest month. For the whole year in context, see Guantánamo's year-round climate.

Daytime high
31°
5th warmest
Overnight low
22°
7th coldest
Rainfall
139 mm
17.2 wet days
Daylight
13 hours
5:29 AM – 6:26 PM
Cloud cover
60%
9th clearest
Wind
7 km/h
9th windiest
Solar energy
6.29 kWh/m²
Travel score
4.0
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical May day in Guantánamo 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 28°C and 32°C. Set against its neighbours, May runs on par with April and about 1°C cooler than June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13021
23021
33121
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
293123
303123
313123

How May really feels in Guantánamo

Once humidity and wind are folded in, May averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Guantánamo weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°164.210.97.1
Feb29° / 19°163.611.36.8
Mar29° / 20°346.411.96.1
Apr30° / 21°589.712.45.2
May31° / 22°13917.212.94.0
Jun32° / 23°9916.713.23.4
Jul33° / 24°7716.713.13.2
Aug32° / 24°9818.412.73.1
Sep32° / 23°13721.612.13.1
Oct30° / 23°11718.711.53.9
Nov29° / 22°5810115.5
Dec28° / 20°265.210.86.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 24% of May, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
26931
36931
46931
56832
66733
76535
86436
96238
106139
115941
125644
135446
145347
155149
164951
174753
184654
194357
204159
214159
223961
233862
243763
253565
263565
273565
283367
293367
303268
313169

Chance of precipitation in May

Any precipitation

Guantánamo gets around 139 mm of rain over 17.2 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 55% and peaks near 65% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
140
241
341
441
542
643
744
845
947
1048
1150
1251
1353
1454
1556
1657
1759
1860
1961
2062
2163
2264
2365
2465
2565
2665
2765
2865
2965
3065
3165

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
12116423
22106424
32106424
42106325
52106226
61106227
7196228
8196030
9195931
10195733
11095635
12085537
13085240
14075142
15064945
16054748
17054550
18044353
19044155
20033958
21033760
22023563
23023266
24013168
25012970
26012772
27012574
28012475
29002278
30002179
31001981

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 42 min at the start of May to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over May. Sunrise moves from 5:36 AM to 5:25 AM, and sunset from 6:20 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:366:20
212.75:366:20
312.85:356:21
412.85:346:21
512.85:346:21
612.85:336:22
712.85:336:22
812.85:326:22
912.95:326:23
1012.95:316:23
1112.95:316:24
1212.95:306:24
1312.95:306:24
1412.95:296:25
1512.95:296:25
1613.05:296:26
1713.05:286:26
1813.05:286:26
1913.05:276:27
2013.05:276:27
2113.05:276:28
2213.05:266:28
2313.05:266:29
2413.15:266:29
2513.15:266:29
2613.15:256:30
2713.15:256:30
2813.15:256:31
2913.15:256:31
3013.15:256:31
3113.15:256:32

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.29 kWh/m².

For context, solar energy here swings from a low near 4.18 kWh/m² to a high of 6.77 kWh/m² in July across the year — May's 6.29 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.4Intense
116.4Intense
126.4Intense
136.3Intense
146.3Intense
156.3Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.2Intense
316.2Intense
Planning a trip in May

Hazard calendar for Guantánamo

In seasonPeak

None of Guantánamo's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Guantánamo 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 May a good time to visit Guantánamo?

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

4.0
Sightseeing
7th-best month of the year
5.7
Beach & pool
7th-best month of the year

May is a reasonable time to visit Guantánamo for sightseeing.

What to pack for Guantánamo in May

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

In May, Guantánamo sees daytime highs around 31°C and nights near 22°C. Pack light clothes, rain gear and sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Guantánamo in May

The nearest coast averages about 28°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 31 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
Apr27Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Guantánamo in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Guantánamo peaks around June 16 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 16UV 12Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct10Very high
Nov7Very high
Dec7High

Air quality in Guantánamo in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Guantánamo is worst in June — around 23 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (December, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2223 µg/m³Dec 195 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb6Good
Mar7Good
Apr9Good
May13Moderate
Jun23Moderate
Jul22Moderate
Aug18Moderate
Sep13Moderate
Oct11Good
Nov6Good
Dec5Good
Location & terrain

Where is Guantánamo?

Guantánamo sits at 20.1°N, 75.2°W, 56 m above sea level, in Cuba. The nearest listed city is Río Guayabal de Yateras, 32 km away.

MoaSantiago de CubaSan LuisBaracoaPalma SorianoCueto

Topography around Guantánamo

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

Within 3 km, the terrain around Guantánamo has only modest variations in elevation — a maximum elevation change of 63 m around an average of 52 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 734 m; within 80 km, large variations in elevation — a maximum elevation change of 1,196 m.

The land around Guantánamo is covered by artificial surfaces (37%), trees (31%) and grassland (20%) within 3 km, trees (45%) and grassland (30%) within 16 km, and trees (49%) and water (38%) within 80 km.

3 km
63 m
16 km
734 m
80 km
1,196 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
May weather nearby: Río Guayabal de Yateras 32 km · Sagua de Tánamo 49 km · Moa 63 km · Santiago de Cuba 65 km · San Luis 67 km · Baracoa 78 km · Palma Soriano 82 km · Cueto 94 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 Guantánamo (20.1444°, -75.2092°, elevation 56 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).