Vallenar weather in May

In May, Vallenar sees average daytime highs of 21°C and overnight lows near 9°C, with 8 mm of rain across 1 wet days and about 10.6 hours of daylight. It is the 9th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 20°C by the end. The sky is clear or mostly clear about 66% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of May to 10 h 18 min by month's end. Set against the rest of the year, May is Vallenar's 11th-clearest and 12th-windiest month. For the whole year in context, see Vallenar's year-round climate.

Daytime high
21°
9th warmest
Overnight low
4th coldest
Rainfall
8 mm
1 wet days
Daylight
10 h 36 min
8:22 AM – 6:57 PM
Cloud cover
32%
11th clearest
Wind
5 km/h
12th windiest
Solar energy
4.23 kWh/m²
Travel score
8.3
out of 10

Vallenar is city in Chile.

Density
3,560/km²
people per km²
Founded
1789

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 20°C by the end.

A typical May day in Vallenar reaches about 21°C in the afternoon and slips back to 9°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 23°C. Set against its neighbours, May runs about 2°C cooler than April and about 2°C warmer than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12210
22210
32210
42210
52210
62210
72110
82110
9219
10219
11219
12219
13219
14219
15219
16219
17219
18219
19209
20208
21208
22208
23208
24208
25208
26208
27208
28208
29208
30207
31207

Vallenar weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 16°0013.69.2
Feb26° / 15°00139.3
Mar25° / 14°40.212.29.5
Apr23° / 12°20.411.39.3
May21° / 8110.68.3
Jun19° / 131.410.27.9
Jul19° / 91.410.48.0
Aug20° / 90.8118.3
Sep21° / 10.411.88.8
Oct23° / 11°10.212.79.2
Nov24° / 13°0013.49.7
Dec25° / 14°0013.89.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 66% 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 23%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18317
28317
38218
48218
58218
68119
78119
88119
98020
108020
118020
128020
137921
147921
157822
167822
177723
187723
197624
207624
217426
227426
237426
247327
257327
267327
277228
287228
297228
307228
317228

Chance of precipitation in May

Any precipitation

Vallenar gets around 8 mm of rain over 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 3% and peaks near 5% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
12
22
32
42
52
62
72
82
92
103
113
123
133
143
153
163
173
183
194
204
214
224
234
244
254
264
274
285
295
305
315

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in May

Winds average 5 km/h in May, the calmest month.

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
16calm
26calm
36calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 54 min at the start of May to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over May. Sunrise moves from 8:13 AM to 8:31 AM, and sunset from 7:08 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.98:137:08
210.98:137:07
310.98:147:06
410.88:147:05
510.88:157:04
610.88:167:04
710.88:167:03
810.88:177:02
910.78:187:01
1010.78:187:01
1110.78:197:00
1210.78:196:59
1310.68:206:59
1410.68:216:58
1510.68:216:57
1610.68:226:57
1710.68:226:56
1810.58:236:56
1910.58:246:55
2010.58:246:55
2110.58:256:54
2210.58:256:54
2310.58:266:53
2410.48:276:53
2510.48:276:52
2610.48:286:52
2710.48:286:52
2810.48:296:51
2910.48:296:51
3010.38:306:51
3110.38:316:50

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.23 kWh/m².

For context, solar energy here swings from a low near 3.7 kWh/m² to a high of 9.24 kWh/m² in December across the year — May's 4.23 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.5Bright
114.4Bright
124.4Bright
134.3Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.2Bright
194.1Bright
204.1Bright
214.0Bright
224.0Bright
234.0Moderate
244.0Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.8Moderate
313.8Moderate
Planning a trip in May

Is May a good time to visit Vallenar?

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

8.3
Sightseeing
9th-best month of the year
4.9
Beach & pool
9th-best month of the year

May is one of the better times to visit Vallenar for general sightseeing.

What to pack for Vallenar in May

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

In May, Vallenar sees daytime highs around 21°C and nights near 9°C. Little to plan around — just the basics.

Sea temperature near Vallenar in May

The nearest coast averages about 16°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 60 km away) is warmest in February at about 18°C and coldest in August near 14°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

12°14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan18Cool
Feb18Cool
Mar18Cool
Apr17Cool
May16Cool
Jun15Bracing
Jul14Bracing
Aug14Bracing
Sep14Bracing
Oct14Bracing
Nov15Bracing
Dec16Cool

UV index in Vallenar in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Vallenar peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 22UV 15Jun 19UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr7High
May5Moderate
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct12Extreme
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Vallenar?

Vallenar sits at 28.6°S, 70.8°W, 388 m above sea level, in Chile. The nearest listed city is Copiapó, 141 km away.

ChilecitoIllapel

Topography around Vallenar

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

Within 3 km, the terrain around Vallenar has only modest variations in elevation — a maximum elevation change of 210 m around an average of 468 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,150 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,526 m.

The land around Vallenar is covered by bare terrain (55%) and artificial surfaces (23%) within 3 km, bare terrain (84%) within 16 km, and bare terrain (69%) within 80 km.

3 km
210 m
16 km
1,150 m
80 km
4,526 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Copiapó 141 km · La Serena 155 km · Vicuña 162 km · Coquimbo 163 km · Caldera 168 km · Ovalle 229 km · Chilecito 324 km · Illapel 342 km

Chile travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
220 V · 50 Hz
Prices
≈ 48% of US
price level, 2025
GDP per capita
$17,995
2025
Happiness
6.3 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
6.3
per 100k, 2023
Road deaths
14.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 517
Religion
Catholic 57%none 26%Evangelical or Protestant 16%other Christians and traditions related to Christ 1%

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 Vallenar (-28.5762°, -70.7594°, elevation 388 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).