Puerto San José weather in May

In May, Puerto San José sees average daytime highs of 29°C and overnight lows near 25°C, with 181 mm of rain across 23.7 wet days and about 12.6 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 18% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 48 min by month's end. Set against the rest of the year, May is Puerto San José's 7th-clearest and 12th-windiest month. For the whole year in context, see Puerto San José's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
25°
12th coldest
Rainfall
181 mm
23.7 wet days
Daylight
12 h 36 min
5:40 AM – 6:19 PM
Cloud cover
69%
7th clearest
Wind
7 km/h
12th windiest
Solar energy
5.84 kWh/m²
Travel score
3.9
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical May day in Puerto San José reaches about 29°C in the afternoon and slips back to 25°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, May runs on par with April and on par with June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52925
62925
72925
82925
92925
102925
112925
122925
132925
142925
152925
162925
172925
182925
192925
202925
212825
222825
232825
242825
252825
262825
272825
282825
292825
302825
312825

How May really feels in Puerto San José

Once humidity and wind are folded in, May averages 18 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
18
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.

Puerto San José weather by month

How May compares with the rest of the year at a glance. May 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
Jan28° / 24°4111.38.5
Feb28° / 24°3111.58.0
Mar29° / 25°113.711.97.1
Apr29° / 25°369.712.35.8
May29° / 25°18123.712.63.9
Jun28° / 25°28125.812.83.5
Jul29° / 25°17425.412.73.6
Aug28° / 25°21727.212.53.5
Sep28° / 25°31827.712.13.5
Oct28° / 25°28225.311.74.1
Nov28° / 24°6611.211.46.4
Dec28° / 24°11311.28.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 65%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
25941
35743
45545
55446
65149
74951
84852
94654
104555
114159
124060
133862
143664
153466
163169
173169
182872
192773
202773
212476
222377
232278
242278
252080
261981
271981
281882
291783
301783
311783

Chance of precipitation in May

Any precipitation

Puerto San José gets around 181 mm of rain over 23.7 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 75% and peaks near 88% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
155
257
358
460
561
663
764
866
967
1068
1170
1271
1373
1474
1576
1677
1779
1880
1982
2083
2184
2285
2386
2486
2587
2687
2787
2887
2988
3087
3187

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 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
13889
23889
32899
42899
52899
61909
71909
818910
918910
1018910
1118910
1218910
1309010
1409010
1509010
1609010
1708911
1808911
1918811
2018910
2118910
2218910
231909
241909
251918
260928
270937
280937
290937
300937
310937

Wind in May

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

Across May, 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.

0246810151015202531
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
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over May. Sunrise moves from 5:46 AM to 5:38 AM, and sunset from 6:15 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:466:15
212.55:456:15
312.55:456:16
412.55:446:16
512.55:446:16
612.55:446:16
712.65:436:16
812.65:436:17
912.65:426:17
1012.65:426:17
1112.65:426:17
1212.65:416:18
1312.65:416:18
1412.65:416:18
1512.65:416:19
1612.65:406:19
1712.75:406:19
1812.75:406:19
1912.75:406:20
2012.75:396:20
2112.75:396:20
2212.75:396:21
2312.75:396:21
2412.75:396:21
2512.75:396:21
2612.75:386:22
2712.75:386:22
2812.75:386:22
2912.75:386:23
3012.75:386:23
3112.85:386:23

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.84 kWh/m².

For context, solar energy here swings from a low near 4.95 kWh/m² to a high of 6.54 kWh/m² in March across the year — May's 5.84 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.1Intense
116.1Intense
126.0Intense
136.0Intense
146.0Bright
155.9Bright
165.9Bright
175.8Bright
185.8Bright
195.8Bright
205.7Bright
215.7Bright
225.6Bright
235.6Bright
245.5Bright
255.5Bright
265.5Bright
275.4Bright
285.4Bright
295.4Bright
305.3Bright
315.3Bright
Planning a trip in May

Hazard calendar for Puerto San José

In seasonPeak

In May, Puerto San José sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Puerto San José sits in the Atlantic hurricane belt; the season peaks August–October.

Puerto San José's monsoon runs May–October, when most of the year's rain falls.

Atlantic hurricane
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Puerto San José?

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

3.9
Sightseeing
8th-best month of the year
4.9
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Puerto San José.

What to pack for Puerto San José in May

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

In May, Puerto San José sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Puerto San José in May

The nearest coast averages about 30°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 30°C and coldest in January near 28°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
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Puerto San José in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Puerto San José peaks around March 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 20UV 12Nov 23UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep10Very high
Oct10Very high
Nov8Very high
Dec8Very high

Air quality in Puerto San José 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 Puerto San José is worst in April — around 47 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModeratePoorApr 2046 µg/m³Jul 2030 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb34Moderate
Mar37Poor
Apr47Poor
May44Poor
Jun31Moderate
Jul30Moderate
Aug30Moderate
Sep33Moderate
Oct37Poor
Nov40Poor
Dec37Poor
Location & terrain

Where is Puerto San José?

Puerto San José sits at 13.9°N, 90.8°W, 5 m above sea level, in Guatemala. The nearest listed city is La Gomera, 31 km away.

La GomeraMasaguaEscuintlaGuazacapánSanta Lucía CotzumalguapaPalínAlotenangoSanta María de Jesús

Topography around Puerto San José

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

Within 3 km, the terrain around Puerto San José has only modest variations in elevation — a maximum elevation change of 20 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 45 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,937 m.

The land around Puerto San José is covered by water (41%) and trees (20%) within 3 km, water (49%) and cropland (23%) within 16 km, and trees (34%) and water (34%) within 80 km.

3 km
20 m
16 km
45 m
80 km
3,937 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
May weather nearby: La Gomera 31 km · Masagua 31 km · Escuintla 42 km · Guazacapán 47 km · Santa Lucía Cotzumalguapa 51 km · Palín 55 km · Alotenango 63 km · Santa María de Jesús 65 km

Guatemala travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 43% of US
price level, 2025
GDP per capita
$6,598
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
49%
of population, 2024
Homicide rate
23.4
per 100k, 2023
Road deaths
22.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 510
Religion
Evangelical 46%Roman Catholic 42%none 11%

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 Puerto San José (13.9222°, -90.8191°, elevation 5 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).