Caldera weather in May

In May, Caldera sees average daytime highs of 17°C and overnight lows near 13°C, with 3 mm of rain across 0.7 wet days and about 10.7 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 17°C through the month. The sky is clear or mostly clear about 58% of the time in May, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of May to 10 h 24 min by month's end. Set against the rest of the year, May is Caldera's 12th-clearest and 11th-windiest month. For the whole year in context, see Caldera's year-round climate.

Daytime high
17°
7th warmest
Overnight low
13°
6th coldest
Rainfall
3 mm
0.7 wet days
Daylight
10 h 42 min
8:19 AM – 7:00 PM
Cloud cover
38%
12th clearest
Wind
9 km/h
11th windiest
Solar energy
4.34 kWh/m²
Travel score
7.2
out of 10

Caldera is settlement in Chile.

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 17°C through the month.

A typical May day in Caldera reaches about 17°C in the afternoon and slips back to 13°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 19°C. Set against its neighbours, May runs about 2°C cooler than April and about 1°C warmer than June.

10°13°15°18°20°151015202531
Avg high (°C)Avg low (°C)
11813
21813
31813
41813
51813
61813
71813
81813
91813
101813
111813
121813
131713
141713
151713
161713
171713
181713
191713
201712
211712
221712
231712
241712
251712
261712
271712
281712
291712
301712
311712

Caldera weather by month

How May compares with the rest of the year at a glance. May is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 16°0013.58.6
Feb21° / 16°00138.7
Mar20° / 15°10.112.28.5
Apr19° / 14°10.111.48.0
May17° / 13°30.710.77.2
Jun16° / 11°40.510.36.6
Jul16° / 11°40.710.56.3
Aug16° / 11°30.4116.5
Sep16° / 11°10.111.86.9
Oct17° / 12°00.112.67.3
Nov18° / 13°0013.37.9
Dec20° / 14°0013.78.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 58% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 25%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28119
38020
48020
57921
67822
77822
87822
97624
107624
117624
127525
137525
147525
157426
167426
177327
187327
197327
207228
217228
227228
237129
247129
257129
267129
277129
287228
297228
307228
317228

Chance of precipitation in May

Any precipitation

Caldera gets around 3 mm of rain over 0.7 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 2% and peaks near 3% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
11
21
31
41
51
61
71
82
92
102
112
122
132
142
152
162
172
182
193
203
213
223
233
243
252
262
272
282
292
302
312

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 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
18317
28416
38515
48614
58713
68812
78812
88911
98911
109010
11919
12919
13919
14928
15928
16928
17928
18928
19937
20937
21937
22946
23946
24955
25955
26955
27964
28964
29964
30964
31964

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 hours at the start of May to 10 h 24 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 8:11 AM to 8:28 AM, and sunset from 7:10 PM to 6:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.08:117:10
211.08:117:09
310.98:127:08
410.98:137:08
510.98:137:07
610.98:147:06
710.98:147:05
810.88:157:05
910.88:157:04
1010.88:167:03
1110.88:177:03
1210.78:177:02
1310.78:187:01
1410.78:187:01
1510.78:197:00
1610.78:197:00
1710.78:206:59
1810.68:216:59
1910.68:216:58
2010.68:226:58
2110.68:226:57
2210.68:236:57
2310.58:236:56
2410.58:246:56
2510.58:246:56
2610.58:256:55
2710.58:266:55
2810.58:266:55
2910.58:276:54
3010.48:276:54
3110.48:286:54

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.34 kWh/m².

For context, solar energy here swings from a low near 3.84 kWh/m² to a high of 9 kWh/m² in December across the year — May's 4.34 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.7Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.3Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.0Bright
284.0Bright
294.0Bright
304.0Bright
314.0Moderate
Planning a trip in May

Is May a good time to visit Caldera?

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

7.2
Sightseeing
8th-best month of the year
2.0
Beach & pool
7th-best month of the year

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

What to pack for Caldera in May

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

In May, Caldera sees daytime highs around 17°C and nights near 13°C. Little to plan around — just the basics.

Sea temperature near Caldera 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 offshore is warmest in February at about 20°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°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan19Cool
Feb20Cool
Mar19Cool
Apr18Cool
May16Cool
Jun15Cool
Jul15Bracing
Aug14Bracing
Sep14Bracing
Oct15Cool
Nov16Cool
Dec18Cool

UV index in Caldera 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 Caldera peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 19UV 14Jun 22UV 4
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar12Extreme
Apr7High
May5High
Jun4Moderate
Jul4Moderate
Aug6High
Sep9Very high
Oct12Extreme
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Caldera?

Caldera sits at 27.1°S, 70.8°W, 23 m above sea level, in Chile. The nearest listed city is Copiapó, 59 km away.

La SerenaCoquimboVicuñaBelénAntofagastaOvalle

Topography around Caldera

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

Within 3 km, the terrain around Caldera has only modest variations in elevation — a maximum elevation change of 82 m around an average of 27 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 789 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,395 m.

The land around Caldera is covered by bare terrain (64%) and water (23%) within 3 km, bare terrain (60%) and water (38%) within 16 km, and bare terrain (65%) and water (33%) within 80 km.

3 km
82 m
16 km
789 m
80 km
2,395 m
shrubsgrasslandartificial surfacesbare terrainwater
May weather nearby: Copiapó 59 km · Vallenar 168 km · La Serena 318 km · Coquimbo 325 km · Vicuña 330 km · Belén 380 km · Antofagasta 382 km · Ovalle 395 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 Caldera (-27.0681°, -70.8192°, elevation 23 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).