Amatitlán weather in May

In May, Amatitlán sees average daytime highs of 25°C and overnight lows near 16°C, with 241 mm of rain across 26.2 wet days and about 12.7 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 5% of the time in May, and the air most often feels humid.

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 Amatitlán's 9th-clearest and 11th-windiest month. For the whole year in context, see Amatitlán's year-round climate.

Daytime high
25°
4th warmest
Overnight low
16°
12th coldest
Rainfall
241 mm
26.2 wet days
Daylight
12 h 42 min
5:39 AM – 6:19 PM
Cloud cover
80%
9th clearest
Wind
4 km/h
11th windiest
Solar energy
5.38 kWh/m²
Travel score
4.2
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical May day in Amatitlán reaches about 25°C in the afternoon and slips back to 16°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, May runs about 1°C cooler than April and on par with June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12616
22616
32616
42616
52616
62516
72516
82516
92516
102516
112516
122516
132516
142516
152516
162516
172516
182516
192516
202516
212516
222516
232516
242516
252516
262516
272416
282416
292416
302416
312416

Amatitlán weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 13°72.611.28.6
Feb26° / 14°113.311.58.1
Mar26° / 14°338.911.97.1
Apr26° / 15°861712.35.6
May25° / 16°24126.212.74.2
Jun25° / 16°30425.712.84.1
Jul25° / 16°16217.812.85.3
Aug25° / 16°22321.712.54.8
Sep24° / 16°32126.912.14.0
Oct24° / 16°22920.911.75.1
Nov24° / 14°488.111.37.3
Dec25° / 14°102.711.28.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 84%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
22971
32971
42872
52674
62575
72377
82377
92278
102080
111981
121981
131783
141684
151486
161387
171288
181189
191090
201090
21991
22991
23892
24892
25793
26694
27694
28694
29694
30694
31694

Chance of precipitation in May

Any precipitation

Amatitlán gets around 241 mm of rain over 26.2 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 84% and peaks near 94% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
171
271
372
473
574
675
776
877
977
1078
1179
1280
1381
1482
1583
1684
1786
1887
1988
2089
2190
2290
2391
2492
2592
2693
2793
2893
2994
3094
3194

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the humid band about 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1730612
2629632
3629623
4528643
5528643
6427663
7426673
8425683
9424693
10423703
11422704
12321724
13320734
14319735
15318745
16317755
17316756
18215776
19214786
20213796
21213796
22212806
23111826
24111826
25111826
26110836
27110836
2809856
2908866
3008866
3108866

Wind in May

Winds average 4 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
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
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 5:44 AM to 5:36 AM, and sunset from 6:15 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:446:15
212.55:446:15
312.55:436:15
412.55:436:16
512.65:436:16
612.65:426:16
712.65:426:16
812.65:416:17
912.65:416:17
1012.65:416:17
1112.65:406:17
1212.65:406:18
1312.65:406:18
1412.75:396:18
1512.75:396:19
1612.75:396:19
1712.75:386:19
1812.75:386:19
1912.75:386:20
2012.75:386:20
2112.75:386:20
2212.75:376:21
2312.75:376:21
2412.75:376:21
2512.75:376:22
2612.85:376:22
2712.85:376:22
2812.85:376:23
2912.85:366:23
3012.85:366:23
3112.85:366:24

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.38 kWh/m².

For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 6.16 kWh/m² in March across the year — May's 5.38 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.6Bright
115.6Bright
125.5Bright
135.5Bright
145.5Bright
155.4Bright
165.4Bright
175.4Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.2Bright
235.1Bright
245.1Bright
255.1Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
304.9Bright
314.9Bright
Planning a trip in May

Hazard calendar for Amatitlán

In seasonPeak

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

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

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

Is May a good time to visit Amatitlán?

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

4.2
Sightseeing
10th-best month of the year
3.8
Beach & pool
10th-best month of the year

May is a reasonable time to visit Amatitlán for sightseeing.

What to pack for Amatitlán in May

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

In May, Amatitlán sees daytime highs around 25°C and nights near 16°C. Pack rain gear. Worth having: light clothes and sun protection. About 26 days see rain.

rain gearlight clothessun protection

Sea temperature near Amatitlán 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 67 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 Amatitlán 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 Amatitlán peaks around April 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 21 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highApr 14UV 13Nov 21UV 8
UV index (midday)Level
Jan9Very high
Feb13Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep10Extreme
Oct11Extreme
Nov8Very high
Dec9Very high

Air quality in Amatitlán 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 Amatitlán 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 Amatitlán?

Amatitlán sits at 14.5°N, 90.6°W, 1,219 m above sea level, in Guatemala. The nearest listed city is Villa Nueva, 8.0 km away.

Topography around Amatitlán

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

Within 3 km, the terrain around Amatitlán has large variations in elevation — a maximum elevation change of 720 m around an average of 1,328 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,293 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,937 m.

The land around Amatitlán is covered by trees (34%), artificial surfaces (29%) and grassland (20%) within 3 km, trees (63%) within 16 km, and trees (57%) within 80 km.

3 km
720 m
16 km
3,293 m
80 km
3,937 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Villa Nueva 8.0 km · Petapa 8.0 km · Santa María de Jesús 8.0 km · Palín 11 km · Villa Canales 11 km · Antigua Guatemala 14 km · Ciudad Vieja 15 km · San Lucas Sacatepéquez 15 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 Amatitlán (14.4774°, -90.6349°, elevation 1,219 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. 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).