Portoviejo weather in May

In May, Portoviejo sees average daytime highs of 29°C and overnight lows near 23°C, with 75 mm of rain across 14.3 wet days and about 12 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 12 hours at the start of May to 11 h 54 min by month's end. Set against the rest of the year, May is Portoviejo's 9th-clearest and 8th-windiest month. For the whole year in context, see Portoviejo's year-round climate.

Daytime high
29°
4th warmest
Overnight low
23°
8th coldest
Rainfall
75 mm
14.3 wet days
Daylight
12 hours
6:19 AM – 6:17 PM
Cloud cover
84%
9th clearest
Wind
6 km/h
8th windiest
Solar energy
4.07 kWh/m²
Travel score
4.5
out of 10

Portoviejo is city in Ecuador, capital of the Manabí Province.

Air quality
Good
PM10 24.6 µg/m³ · 2012
Density
6,822/km²
people per km²
Founded
1535

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 Portoviejo 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 31°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
232923
242923
252923
262923
272923
282922
292922
302922
312922

How May really feels in Portoviejo

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.

Portoviejo 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°13218.212.14.1
Feb29° / 23°25322.7123.4
Mar29° / 23°23423.1123.5
Apr29° / 23°15820.3123.7
May29° / 23°7514.3124.5
Jun28° / 22°327.911.95.6
Jul28° / 21°225.911.96.3
Aug28° / 21°144126.3
Sep28° / 21°205.1126.0
Oct29° / 21°184.5125.9
Nov29° / 21°224.3125.7
Dec29° / 22°6110.112.15.0

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 5% of May, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3892
4892
5892
6892
7793
8793
9694
10694
11595
12595
13595
14595
15496
16595
17595
18595
19595
20694
21694
22694
23694
24793
25793
26694
27694
28793
29793
30793
31793

Chance of precipitation in May

Any precipitation

Portoviejo gets around 75 mm of rain over 14.3 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 46% and peaks near 58% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
158
257
356
456
555
654
754
853
953
1052
1151
1251
1350
1449
1548
1647
1746
1845
1944
2043
2142
2241
2340
2439
2538
2637
2737
2836
2935
3035
3134

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 76% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
16877
26877
35887
45887
55896
66886
76886
87876
98866
108866
1110855
1211845
1312835
1414815
1515814
1617794
1719774
1821763
1924733
2026722
2128702
2230682
2332662
2434651
2536631
2637621
2739601
2841581
2943561
3044551
3146531

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 7 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
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 hours at the start of May to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over May. Sunrise moves from 6:20 AM to 6:21 AM, and sunset from 6:18 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:206:18
212.06:206:18
312.06:206:18
412.06:206:17
512.06:206:17
612.06:206:17
712.06:206:17
812.06:206:17
912.06:206:17
1012.06:196:17
1112.06:196:17
1212.06:196:17
1312.06:196:17
1412.06:196:17
1512.06:196:17
1612.06:196:17
1712.06:206:17
1812.06:206:17
1912.06:206:17
2011.96:206:17
2111.96:206:17
2211.96:206:17
2311.96:206:17
2411.96:206:17
2511.96:206:17
2611.96:206:17
2711.96:206:17
2811.96:206:17
2911.96:216:17
3011.96:216:17
3111.96:216:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.07 kWh/m².

For context, solar energy here swings from a low near 3.7 kWh/m² to a high of 4.65 kWh/m² in March across the year — May's 4.07 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.0Bright
184.0Bright
194.0Bright
204.0Bright
214.0Bright
224.0Moderate
234.0Moderate
244.0Moderate
254.0Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
313.9Moderate
Planning a trip in May

Hazard calendar for Portoviejo

In seasonPeak

None of Portoviejo's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Portoviejo's monsoon runs January–April, 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 Portoviejo?

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

4.5
Sightseeing
8th-best month of the year
5.9
Beach & pool
8th-best month of the year

May is a reasonable time to visit Portoviejo for sightseeing.

What to pack for Portoviejo in May

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

In May, Portoviejo sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 14 days see rain.

light clothesrain gear

Sea temperature near Portoviejo 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 28 km away) is warmest in February at about 26°C and coldest in September near 24°C.

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

22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr26Warm
May26Warm
Jun26Warm
Jul25Warm
Aug25Warm
Sep24Warm
Oct25Warm
Nov25Warm
Dec25Warm

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

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 10UV 15Jul 14UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep11Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme

Air quality in Portoviejo 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 Portoviejo is worst in March — around 22 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (August, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1821 µg/m³Aug 1712 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar22Moderate
Apr20Moderate
May17Moderate
Jun15Moderate
Jul13Moderate
Aug12Good
Sep13Moderate
Oct14Moderate
Nov19Moderate
Dec19Moderate
Location & terrain

Where is Portoviejo?

Portoviejo sits at 1.1°S, 80.5°W, 90 m above sea level, in Ecuador. The nearest listed city is Montecristi, 23 km away.

Topography around Portoviejo

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

Within 3 km, the terrain around Portoviejo has significant variations in elevation — a maximum elevation change of 251 m around an average of 88 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 634 m; within 80 km, large variations in elevation — a maximum elevation change of 846 m.

The land around Portoviejo is covered by trees (45%) and artificial surfaces (45%) within 3 km, trees (61%) and grassland (29%) within 16 km, and trees (42%), water (29%) and grassland (24%) within 80 km.

3 km
251 m
16 km
634 m
80 km
846 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Montecristi 23 km · Sucre 25 km · Manta 33 km · Jipijapa 35 km · Calceta 40 km · Bahía de Caráquez 51 km · Chone 56 km · Canoa 66 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 Portoviejo (-1.0576°, -80.4514°, elevation 90 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).