Guayaquil weather in May

In May, Guayaquil sees average daytime highs of 29°C and overnight lows near 23°C, with 229 mm of rain across 24.1 wet days and about 11.9 hours of daylight. It is the 4th-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 1% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of May to 11 h 54 min by month's end. Set against the rest of the year, May is Guayaquil's 7th-clearest and 8th-windiest month. For the whole year in context, see Guayaquil's year-round climate.

Daytime high
29°
4th warmest
Overnight low
23°
8th coldest
Rainfall
229 mm
24.1 wet days
Daylight
11 h 54 min
6:19 AM – 6:13 PM
Cloud cover
84%
7th clearest
Wind
6 km/h
8th windiest
Solar energy
3.58 kWh/m²
Travel score
3.6
out of 10

Guayaquil is city of Ecuador.

Density
7,684/km²
people per km²
Founded
1534

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

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 Guayaquil reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°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 about 1°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
192923
202923
212923
222923
232823
242823
252823
262823
272823
282823
292823
302823
312823

How May really feels in Guayaquil

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.

Guayaquil weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°24923.312.13.7
Feb29° / 24°37825.912.13.0
Mar29° / 24°39426.1123.2
Apr29° / 24°31824.6123.3
May29° / 23°22924.111.93.6
Jun28° / 22°14720.811.94.5
Jul27° / 21°11918.911.95.0
Aug27° / 21°8415.711.95.4
Sep27° / 21°9616.9125.1
Oct27° / 21°7013.9125.5
Nov28° / 21°539.512.15.7
Dec29° / 22°12014.312.14.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 6% of May, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3991
4991
5991
6991
7991
8991
9892
10892
11892
12793
13694
14694
15694
16694
17694
18694
19694
20694
21694
22694
23793
24793
25793
26793
27793
28694
29694
30694
31694

Chance of precipitation in May

Any precipitation

Guayaquil gets around 229 mm of rain over 24.1 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 82% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
182
282
382
482
582
682
782
882
982
1081
1181
1281
1381
1480
1580
1679
1778
1877
1977
2076
2175
2274
2374
2473
2573
2673
2772
2872
2972
3072
3171

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 84% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
118118
218118
318118
418217
518217
618217
718316
818316
918316
1018415
1118415
1218415
1318514
1418613
1528513
1628612
1738512
1848511
1948610
205869
216859
227858
238857
248857
259856
2610855
2711845
2812844
2913834
3014833
3115823

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 5 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
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
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 11 h 54 min at the start of May to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over May. Sunrise moves from 6:19 AM to 6:20 AM, and sunset from 6:14 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:196:14
211.96:196:14
311.96:196:14
411.96:196:14
511.96:196:14
611.96:196:14
711.96:196:14
811.96:196:13
911.96:196:13
1011.96:196:13
1111.96:196:13
1211.96:196:13
1311.96:196:13
1411.96:196:13
1511.96:196:13
1611.96:196:13
1711.96:196:13
1811.96:196:13
1911.96:196:13
2011.96:196:13
2111.96:196:13
2211.96:196:13
2311.96:196:13
2411.96:196:13
2511.96:206:13
2611.96:206:13
2711.96:206:13
2811.96:206:13
2911.96:206:13
3011.96:206:13
3111.96:206:13

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.58 kWh/m².

For context, solar energy here swings from a low near 3.49 kWh/m² to a high of 4.5 kWh/m² in November across the year — May's 3.58 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.7Moderate
33.7Moderate
43.7Moderate
53.7Moderate
63.7Moderate
73.7Moderate
83.6Moderate
93.6Moderate
103.6Moderate
113.6Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.5Moderate
173.5Moderate
183.5Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.5Moderate
Planning a trip in May

Hazard calendar for Guayaquil

In seasonPeak

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

Guayaquil's rainy season runs January–May, 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 Guayaquil?

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

3.6
Sightseeing
9th-best month of the year
4.5
Beach & pool
9th-best month of the year

May is a weaker month for outdoor sightseeing in Guayaquil.

What to pack for Guayaquil in May

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

In May, Guayaquil sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 24 days see rain.

light clothesrain gear

Sea temperature near Guayaquil in May

The nearest coast averages about 26°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 55 km away) is warmest in March at about 27°C and coldest in September near 23°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb27Warm
Mar27Warm
Apr26Warm
May26Warm
Jun25Warm
Jul24Refreshing
Aug23Refreshing
Sep23Refreshing
Oct23Refreshing
Nov24Refreshing
Dec25Warm

UV index in Guayaquil 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 Guayaquil peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 11UV 15Jul 14UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr12Extreme
May12Extreme
Jun10Extreme
Jul10Very high
Aug11Extreme
Sep11Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Guayaquil 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 Guayaquil is worst in March — around 21 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (August, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1621 µg/m³Aug 179 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb19Moderate
Mar21Moderate
Apr19Moderate
May15Moderate
Jun12Moderate
Jul10Good
Aug9Good
Sep10Good
Oct14Moderate
Nov18Moderate
Dec18Moderate
Location & terrain

Where is Guayaquil?

Guayaquil sits at 2.2°S, 79.9°W, 14 m above sea level, in Ecuador. The nearest listed city is Eloy Alfaro, 6.0 km away.

Topography around Guayaquil

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

Within 3 km, the terrain around Guayaquil has only modest variations in elevation — a maximum elevation change of 86 m around an average of 6 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 463 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,581 m.

The land around Guayaquil is covered by artificial surfaces (58%) and water (27%) within 3 km, water (28%) and artificial surfaces (26%) within 16 km, and trees (37%) and grassland (24%) within 80 km.

3 km
86 m
16 km
463 m
80 km
3,581 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
May weather nearby: Eloy Alfaro 6.0 km · Yaguachi Nuevo 24 km · El Triunfo 31 km · Samborondón 32 km · Milagro 33 km · Daule 39 km · Naranjito 47 km · Pedro Carbo 57 km

Ecuador travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 43% of US
price level, 2025
GDP per capita
$7,125
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
70%
of population, 2024
Homicide rate
45.7
per 100k, 2023
Road deaths
20.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 466
Religion
Roman Catholic 68%Protestant 19%none 8%other 2%

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 Guayaquil (-2.1962°, -79.8862°, elevation 14 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).