Guazacapán weather in May

In May, Guazacapán sees average daytime highs of 29°C and overnight lows near 25°C, with 195 mm of rain across 24.6 wet days and about 12.6 hours of daylight. It is the 5th-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 15% 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 Guazacapán's 7th-clearest and 10th-windiest month. For the whole year in context, see Guazacapán's year-round climate.

Daytime high
29°
5th warmest
Overnight low
25°
12th coldest
Rainfall
195 mm
24.6 wet days
Daylight
12 h 36 min
5:38 AM – 6:17 PM
Cloud cover
71%
7th clearest
Wind
6 km/h
10th windiest
Solar energy
5.85 kWh/m²
Travel score
3.5
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 Guazacapán reaches about 29°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, May runs about 1°C cooler than April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13025
23025
33025
43025
53025
63025
73025
83025
93025
103025
113025
123025
133025
143025
153025
163025
172925
182925
192925
202925
212925
222925
232924
242924
252924
262924
272924
282924
292924
302924
312924

How May really feels in Guazacapán

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.

Guazacapán weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°41.211.37.0
Feb30° / 23°41.211.56.7
Mar30° / 23°134.511.96.0
Apr30° / 24°4110.712.35.0
May29° / 25°19524.612.63.5
Jun29° / 24°27927.112.83.2
Jul29° / 24°19326.712.73.3
Aug29° / 24°22228.312.53.2
Sep28° / 24°33028.512.13.1
Oct28° / 24°29126.311.73.6
Nov29° / 23°7412.511.35.4
Dec29° / 22°113.511.26.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 68%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25545
35347
45248
55149
64852
74654
84456
94258
104258
113961
123763
133565
143268
153169
163070
172773
182773
192476
202476
212377
222377
232080
242080
252080
261981
271882
281882
291882
301684
311684

Chance of precipitation in May

Any precipitation

Guazacapán gets around 195 mm of rain over 24.6 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 78% and peaks near 89% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
159
261
363
464
565
667
768
869
970
1071
1173
1274
1375
1476
1578
1679
1781
1882
1984
2085
2186
2287
2388
2488
2589
2689
2789
2889
2989
3089
3189

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 91% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
116885
205896
304906
404906
503916
603916
703916
802926
902926
1002926
1102926
1202917
1302917
1402917
1502917
1602908
1702908
1802908
1902908
2002908
2102908
2202908
2302908
2402908
2502908
2601918
2701927
2801927
2901918
3001918
3101918

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 5:44 AM to 5:36 AM, and sunset from 6:14 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:446:14
212.55:446:14
312.55:436:14
412.55:436:14
512.55:426:15
612.65:426:15
712.65:416:15
812.65:416:15
912.65:416:16
1012.65:406:16
1112.65:406:16
1212.65:406:16
1312.65:396:17
1412.65:396:17
1512.65:396:17
1612.65:386:17
1712.75:386:18
1812.75:386:18
1912.75:386:18
2012.75:376:19
2112.75:376:19
2212.75:376:19
2312.75:376:19
2412.75:376:20
2512.75:376:20
2612.75:376:20
2712.75:366:21
2812.75:366:21
2912.85:366:21
3012.85:366:22
3112.85:366:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.85 kWh/m².

For context, solar energy here swings from a low near 4.97 kWh/m² to a high of 6.57 kWh/m² in March across the year — May's 5.85 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
305.4Bright
315.3Bright
Planning a trip in May

Hazard calendar for Guazacapán

In seasonPeak

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

Guazacapán sits in the Atlantic hurricane belt; the season peaks August–October.

Guazacapán'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 Guazacapán?

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

3.5
Sightseeing
8th-best month of the year
4.7
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Guazacapán.

What to pack for Guazacapán in May

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

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

light clothesrain gearsun protection

Sea temperature near Guazacapán 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 at the nearest coast (about 23 km away) 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 Guazacapán 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 Guazacapán peaks around April 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 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 highApr 10UV 13Dec 11UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep10Very high
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Guazacapán 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 Guazacapán 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 Guazacapán?

Guazacapán sits at 14.1°N, 90.4°W, 265 m above sea level, in Guatemala. The nearest listed city is Cuilapa, 26 km away.

CuilapaBarberenaFraijanesJalpataguaPuerto San JoséVilla CanalesEscuintlaPalín

Topography around Guazacapán

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

Within 3 km, the terrain around Guazacapán has significant variations in elevation — a maximum elevation change of 436 m around an average of 286 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,945 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,937 m.

The land around Guazacapán is covered by trees (55%) and grassland (39%) within 3 km, trees (49%) and grassland (37%) within 16 km, and trees (43%) and water (23%) within 80 km.

3 km
436 m
16 km
1,945 m
80 km
3,937 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
May weather nearby: Cuilapa 26 km · Barberena 27 km · Fraijanes 44 km · Jalpatagua 45 km · Puerto San José 47 km · Villa Canales 47 km · Escuintla 47 km · Palín 47 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 Guazacapán (14.0742°, -90.4167°, elevation 265 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).