Gualán weather in May

In May, Gualán sees average daytime highs of 30°C and overnight lows near 21°C, with 182 mm of rain across 22.5 wet days and about 12.7 hours of daylight. It is the 1st-warmest and 6th-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 11% of the time in May, and the air most often feels muggy.

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 Gualán's 6th-clearest and 8th-windiest month. For the whole year in context, see Gualán's year-round climate.

Daytime high
30°
1st warmest
Overnight low
21°
11th coldest
Rainfall
182 mm
22.5 wet days
Daylight
12 h 42 min
5:33 AM – 6:15 PM
Cloud cover
72%
6th clearest
Wind
5 km/h
8th windiest
Solar energy
5.63 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 30°C through the month.

A typical May day in Gualán reaches about 30°C in the afternoon and slips back to 21°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13020
23020
33020
43020
53020
63020
73020
83020
93020
103020
113020
123021
133021
143021
153021
163021
173021
183021
193021
203021
213021
223021
233021
243021
253021
263021
273021
283021
293021
303021
313021

How May really feels in Gualán

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.

Gualán weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 17°9217.711.25.8
Feb26° / 17°6514.511.55.9
Mar28° / 18°6112.811.96.0
Apr30° / 20°6713.312.34.7
May30° / 21°18222.512.73.5
Jun29° / 21°30028.212.93.0
Jul28° / 20°26230.212.83.3
Aug28° / 20°26229.212.53.2
Sep29° / 20°30528.312.13.1
Oct27° / 20°24826.211.73.9
Nov25° / 18°15820.411.35.0
Dec24° / 17°1031911.15.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 71%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24159
34159
44159
53961
63862
73763
83763
93565
103466
113367
123268
133169
143070
152872
162872
172773
182674
192575
202377
212377
222377
232278
242278
252278
262080
272080
281882
291882
301882
311783

Chance of precipitation in May

Any precipitation

Gualán gets around 182 mm of rain over 22.5 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 72% 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 (%)
153
255
357
458
560
661
763
864
966
1067
1168
1269
1370
1471
1572
1673
1774
1875
1976
2077
2178
2279
2380
2481
2582
2683
2784
2885
2986
3087
3188

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 57% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11106326
2196327
3096328
4086329
5086230
6076231
7076132
8066232
9066133
10066034
11066034
12056035
13056035
14055936
15055837
16045937
17045838
18035938
19035839
20035740
21025741
22025642
23025444
24025345
25015247
26015049
27014950
28014752
29014653
30004456
31004258

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

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 5:39 AM to 5:30 AM, and sunset from 6:11 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:396:11
212.55:386:11
312.65:386:11
412.65:376:11
512.65:376:12
612.65:366:12
712.65:366:12
812.65:356:12
912.65:356:13
1012.65:356:13
1112.65:346:13
1212.75:346:14
1312.75:346:14
1412.75:336:14
1512.75:336:14
1612.75:336:15
1712.75:326:15
1812.75:326:15
1912.75:326:16
2012.75:326:16
2112.75:316:16
2212.85:316:17
2312.85:316:17
2412.85:316:17
2512.85:316:18
2612.85:316:18
2712.85:306:18
2812.85:306:19
2912.85:306:19
3012.85:306:19
3112.85:306:20

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.63 kWh/m².

For context, solar energy here swings from a low near 3.49 kWh/m² to a high of 6.01 kWh/m² in April across the year — May's 5.63 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in May

Hazard calendar for Gualán

In seasonPeak

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

Gualán's rainy season runs May–November, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Gualán?

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
4.8
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Gualán.

What to pack for Gualán in May

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

In May, Gualán sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

UV index in Gualán 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 Gualán peaks around April 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highApr 11UV 13Dec 15UV 9
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr14Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Gualán 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 Gualán is worst in April — around 42 µg/m³ PM2.5 (poor), about 4.0× the cleanest month (December, 10 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodApr 2141 µg/m³Dec 2010 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Good
Mar15Moderate
Apr42Poor
May37Poor
Jun22Moderate
Jul22Moderate
Aug18Moderate
Sep17Moderate
Oct14Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Gualán?

Gualán sits at 15.1°N, 89.4°W, 123 m above sea level, in Guatemala. The nearest listed city is Zacapa, 25 km away.

Copán RuinasChiquimulaPanzosEl EstorEsquipulasSan Luis JilotepequeMorales

Topography around Gualán

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

Within 3 km, the terrain around Gualán has significant variations in elevation — a maximum elevation change of 263 m around an average of 170 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,920 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,990 m.

The land around Gualán is covered by trees (36%) and grassland (33%) within 3 km, trees (69%) within 16 km, and trees (69%) within 80 km.

3 km
263 m
16 km
1,920 m
80 km
2,990 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Zacapa 25 km · Copán Ruinas 38 km · Chiquimula 41 km · Panzos 44 km · El Estor 46 km · Esquipulas 62 km · San Luis Jilotepeque 66 km · Morales 68 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 Gualán (15.1195°, -89.3572°, elevation 123 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. 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).