Puerto Montt in Summer
In summer (December, January and February), Puerto Montt sees average daytime highs around 18°C and overnight lows near 11°C, with 336 mm of rain over about 34 wet days across the season. It is the warmest season of the year and the driest season of the year.
Across summer, daytime highs hold fairly steady around 18°C. The sky is clear or mostly clear about 26% of the time across summer, and the air most often feels dry.
Summer is Puerto Montt's best season of the year to visit on our travel score. For the whole year in context, see Puerto Montt's year-round climate.
- Avg daytime high
- 18°C
- warmest season of the year
- Avg overnight low
- 11°C
- Rainfall
- 336 mm
- 34 wet days
- Avg wind
- 13 km/h
- Travel score
- 5.6
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Puerto Montt in Summer
Across summer, daytime highs hold fairly steady around 18°C.
A typical summer day in Puerto Montt reaches about 18°C and drops to 11°C overnight. The warmest of the three months is February, the coolest December.
Puerto Montt weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 18° / 11° | 101 | 11.1 | 0 | 14.7 | 5.8 |
| Feb | 18° / 11° | 98 | 9.4 | 0 | 13.7 | 6.0 |
| Mar | 17° / 10° | 132 | 12.2 | 0 | 12.3 | 5.1 |
| Apr | 14° / 9° | 183 | 15.2 | 0 | 10.9 | 3.7 |
| May | 12° / 8° | 261 | 18.3 | 0 | 9.7 | 2.6 |
| Jun | 10° / 6° | 311 | 20.7 | 0.2 | 9.1 | 1.7 |
| Jul | 10° / 5° | 276 | 20.2 | 0.5 | 9.3 | 1.6 |
| Aug | 11° / 5° | 277 | 20.8 | 0.2 | 10.3 | 1.9 |
| Sep | 12° / 6° | 185 | 17.4 | 0.1 | 11.7 | 2.5 |
| Oct | 14° / 7° | 180 | 17.5 | 0 | 13.1 | 3.1 |
| Nov | 15° / 9° | 151 | 15.4 | 0 | 14.3 | 3.9 |
| Dec | 17° / 10° | 137 | 13.6 | 0 | 14.9 | 4.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 26% of the time across summer.
Chance of precipitation in Summer
Puerto Montt gets around 336 mm of rain over 34 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 13 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 48 min in early December to 13 h 06 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.5 kWh/m².
Is summer a good time to visit Puerto Montt?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Puerto Montt for sightseeing.
What to pack for Puerto Montt in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Puerto Montt sees daytime highs around 18°C and nights near 11°C. Pack sun protection. Worth having: a warm layer and rain gear. About 34 days see rain.
Sea temperature near Puerto Montt in Summer
The nearest coast averages about 15°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 18 km away) is warmest in January at about 16°C and coldest in August near 10°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 16 | 16 | 15 | 13 | 11 | 11 | 11 | 10 | 11 | 12 | 13 | 15 |
| Comfort | Cool | Cool | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 16 | Cool |
| Feb | 16 | Cool |
| Mar | 15 | Bracing |
| Apr | 13 | Bracing |
| May | 11 | Bracing |
| Jun | 11 | Bracing |
| Jul | 11 | Bracing |
| Aug | 10 | Bracing |
| Sep | 11 | Bracing |
| Oct | 12 | Bracing |
| Nov | 13 | Bracing |
| Dec | 15 | Bracing |
UV index in Puerto Montt in Summer
Clear-sky midday UV across summer averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Puerto Montt peaks around December 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 12 | 11 | 7 | 4 | 2 | 1 | 2 | 2 | 4 | 7 | 8 | 12 |
| Level | Extreme | Extreme | High | Moderate | Moderate | Low | Low | Moderate | Moderate | High | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 11 | Extreme |
| Mar | 7 | High |
| Apr | 4 | Moderate |
| May | 2 | Moderate |
| Jun | 1 | Low |
| Jul | 2 | Low |
| Aug | 2 | Moderate |
| Sep | 4 | Moderate |
| Oct | 7 | High |
| Nov | 8 | Very high |
| Dec | 12 | Extreme |
Air quality in Puerto Montt in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Puerto Montt is worst in March — around 34 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Seasonal pattern from CAMS reanalysis, scaled to Puerto Montt's WHO annual average of 27.9 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 23 | 23 | 34 | 31 | 26 | 23 | 25 | 30 | 32 | 29 | 28 | 29 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 23 | Moderate |
| Feb | 23 | Moderate |
| Mar | 34 | Moderate |
| Apr | 31 | Moderate |
| May | 26 | Moderate |
| Jun | 23 | Moderate |
| Jul | 25 | Moderate |
| Aug | 30 | Moderate |
| Sep | 32 | Moderate |
| Oct | 29 | Moderate |
| Nov | 28 | Moderate |
| Dec | 29 | Moderate |
Where is Puerto Montt?
Puerto Montt sits at 41.5°S, 72.9°W, 11 m above sea level, in Chile. The nearest listed city is Puerto Varas, 17 km away.
Topography around Puerto Montt
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Puerto Montt.
Within 3 km, the terrain around Puerto Montt has only modest variations in elevation — a maximum elevation change of 147 m around an average of 66 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 426 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,668 m.
The land around Puerto Montt is covered by artificial surfaces (47%), water (25%) and trees (20%) within 3 km, trees (42%), water (30%) and grassland (23%) within 16 km, and trees (47%) and water (29%) within 80 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
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 Puerto Montt (-41.4693°, -72.9424°, elevation 11 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.