Osorno weather in May

In May, Osorno sees average daytime highs of 13°C and overnight lows near 6°C, with 194 mm of precipitation across 15.7 wet days and about 9.8 hours of daylight. It is the 9th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 14°C in the first days to 11°C by the end. The sky is clear or mostly clear about 12% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 18 min at the start of May to 9 h 18 min by month's end. Set against the rest of the year, May is Osorno's 11th-clearest and 11th-windiest month. For the whole year in context, see Osorno's year-round climate.

Daytime high
13°
9th warmest
Overnight low
5th coldest
Precipitation
194 mm
15.7 wet days
Daylight
9 h 48 min
8:56 AM – 6:41 PM
Cloud cover
75%
11th clearest
Wind
10 km/h
11th windiest
Solar energy
1.74 kWh/m²
Travel score
3.0
out of 10

Osorno is city in Chile.

Air quality
High
PM2.5 33.8 µg/m³ · 2019
Density
143/km²
people per km²
Founded
1558

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 14°C in the first days to 11°C by the end.

A typical May day in Osorno reaches about 13°C in the afternoon and slips back to 6°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 15°C. Set against its neighbours, May runs about 3°C cooler than April and about 2°C warmer than June.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1146
2146
3146
4146
5146
6146
7146
8146
9136
10136
11136
12136
13136
14136
15136
16136
17136
18125
19125
20125
21125
22125
23125
24125
25125
26125
27125
28125
29115
30115
31115

Osorno 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
Jan21° / 10°396.214.67.3
Feb22° / 10°415.213.67.5
Mar19° / 658.312.36.5
Apr16° / 11411.4114.6
May13° / 19415.79.83.0
Jun10° / 25118.89.21.9
Jul10° / 23218.29.41.8
Aug11° / 21318.310.42.2
Sep13° / 12914.311.73.1
Oct15° / 11413.713.14.0
Nov17° / 7710.514.35.1
Dec19° / 678.214.86.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23367
33169
43169
53169
62971
72971
82872
92773
102773
112674
122674
132674
142575
152575
162575
172575
182476
192476
202575
212674
222674
232674
242674
252674
262674
272674
282575
292575
302476
312476

Chance of precipitation in May

Any precipitation

Osorno gets around 194 mm of rain and snow over 15.7 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 51% and peaks near 60% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
143
243
343
443
544
644
744
845
945
1046
1147
1247
1348
1449
1550
1651
1752
1853
1953
2054
2155
2256
2356
2456
2557
2657
2758
2858
2959
3060
3160

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1982
2982
3982
4982
5982
6982
7982
8982
9982
10982
11982
12982
13982
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
241000
251000
261000
271000
281000
291000
301000
311000

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 10 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
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 18 min at the start of May to 9 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over May. Sunrise moves from 8:41 AM to 9:10 AM, and sunset from 6:59 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.38:416:59
210.38:426:57
310.28:436:56
410.28:446:55
510.18:456:53
610.18:466:52
710.18:476:51
810.08:486:50
910.08:496:49
1010.08:506:48
119.98:516:46
129.98:526:45
139.88:536:44
149.88:546:43
159.88:556:42
169.88:566:41
179.78:576:40
189.78:586:39
199.78:596:39
209.69:006:38
219.69:016:37
229.69:026:36
239.59:036:35
249.59:046:35
259.59:056:34
269.59:066:33
279.49:066:32
289.49:076:32
299.49:086:31
309.49:096:31
319.39:106:30

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 1.74 kWh/m².

For context, solar energy here swings from a low near 1.28 kWh/m² to a high of 7.12 kWh/m² in January across the year — May's 1.74 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.2Moderate
22.2Moderate
32.1Moderate
42.1Moderate
52.1Moderate
62.0Moderate
72.0Moderate
82.0Dim
91.9Dim
101.9Dim
111.9Dim
121.8Dim
131.8Dim
141.8Dim
151.8Dim
161.7Dim
171.7Dim
181.7Dim
191.6Dim
201.6Dim
211.6Dim
221.6Dim
231.6Dim
241.6Dim
251.5Dim
261.5Dim
271.5Dim
281.5Dim
291.5Dim
301.4Dim
311.4Dim
Planning a trip in May

Hazard calendar for Osorno

In seasonPeak

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

Osorno's rainy season runs April–October, 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 Osorno?

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

3.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in Osorno.

What to pack for Osorno in May

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

In May, Osorno sees daytime highs around 13°C and nights near 6°C. Pack rain gear. Worth having: a warm layer. About 16 days see rain.

rain geara warm layer

Sea temperature near Osorno in May

The nearest coast averages about 13°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 63 km away) is warmest in January at about 15°C and coldest in August near 11°C.

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

10°12°14°16°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr14Bracing
May13Bracing
Jun12Bracing
Jul11Bracing
Aug11Bracing
Sep11Bracing
Oct12Bracing
Nov13Bracing
Dec14Bracing

UV index in Osorno in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Osorno peaks around December 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateLowModerateVery highExtremeDec 20UV 12Jun 18UV 2
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar7Very high
Apr5Moderate
May2Moderate
Jun2Low
Jul2Low
Aug3Moderate
Sep4Moderate
Oct7High
Nov9Very high
Dec12Extreme

Air quality in Osorno 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 Osorno is worst in March — around 43 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (February, 23 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Osorno's WHO annual average of 33.8 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModeratePoorModerateMar 2343 µg/m³Feb 823 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb23Moderate
Mar43Poor
Apr42Poor
May36Poor
Jun34Moderate
Jul35Moderate
Aug40Poor
Sep39Poor
Oct34Moderate
Nov31Moderate
Dec26Moderate
Location & terrain

Where is Osorno?

Osorno sits at 40.6°S, 73.1°W, 37 m above sea level, in Chile. The nearest listed city is Río Bueno, 31 km away.

Topography around Osorno

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

Within 3 km, the terrain around Osorno has only modest variations in elevation — a maximum elevation change of 68 m around an average of 47 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 284 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,650 m.

The land around Osorno is covered by artificial surfaces (40%), trees (23%) and grassland (23%) within 3 km, grassland (45%), cropland (26%) and trees (25%) within 16 km, and trees (49%) and grassland (23%) within 80 km.

3 km
68 m
16 km
284 m
80 km
2,650 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Río Bueno 31 km · La Unión 32 km · Purranque 38 km · Paillaco 60 km · Frutillar 61 km · Llanquihue 77 km · Puerto Varas 84 km · Valdivia 85 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 Osorno (-40.574°, -73.1335°, elevation 37 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).