Climate - Puerto Montt (Chile)

The climate of Puerto Montt is oceanic, with quite mild winters and cool summers. The rains are frequent all year round, but especially in autumn and winter, from April to September.
At night it can get cold even in summer. Fog can form all year round.
Snow in Puerto Montt is very rare, however, occasionally a snowfall can occur, as happened in August 1995 and August 2020.
The city is located in southern Chile, in the Los Lagos region, in the southernmost part of the Chilean Central Valley, at 41 degrees south latitude. We are in an area where the coast is indented and widens into bays and inlets. Although the Pacific coast lies 70 km (43 mi) to the west, Puerto Montt faces south on the coast of the Reloncaví Sound, a bay that then widens into the Gulf of Ancud, which separates the island of Chiloé from the mainland.
North of the city is Lake Llanquihue, the second largest in Chile after Lake General Carrera.
To the east are the Andes, with volcanoes and lakes, and with the limit of perennial snow at about 1,500 meters (4,900 feet). On the border with Argentina we find Mount Tronador, the highest peak in the area with its 3,491 meters (11,453 feet).

Puerto Montt - Climate data

In Puerto Montt, the average temperature of the coldest month (July) is of 7.0 °C (44.6 °F), that of the warmest month (January) is of 14.9 °C (58.8 °F). Here are the average temperatures.
In Puerto Montt, precipitation amounts to 1615 millimeters (63.6 inches) per year: it is therefore abundant. It ranges from 70 mm (2.8 in) in the driest month (February) to 220 mm (8.7 in) in the wettest one (June). Here is the average precipitation.
At Puerto Montt, the sea temperature ranges from 10.5 °C (51 °F) in August to 15 °C (59 °F) in January, February. Here are the average sea temperatures.
In Puerto Montt, there are on average around 1585 sunshine hours per year. Here are the average hours of sunshine per day.

Puerto Montt - Weather by month

Based on the period 1991-2020

---

In January, the warmest month of the year, the weather in Puerto Montt is usually very mild. The average temperature is of 14.9 °C (59 °F), with a minimum of 9.2 °C (48.5 °F) and a maximum of 20.6 °C (69.1 °F).
On the coldest nights of the month, the temperature usually drops to around 3.5 °C (38.5 °F). However, it dropped to 0.8 °C (33.4 °F) in January 2019.
On the warmest days of the month, the temperature usually reaches around 25.5 °C (78 °F). However, it reached 32.7 °C (90.9 °F) in January 2013.
Precipitation amounts to 85 mm (3.3 in), distributed over 14 days.
The day lasts on average 14 hours and 50 minutes. So the days are long.
There are on average 7 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
The average sea temperature is of 15 °C (59 °F). Therefore, the sea is cold for swimming.

---

In February, the weather in Puerto Montt is usually very mild. The average temperature is of 14.9 °C (59 °F), with a minimum of 9 °C (48.1 °F) and a maximum of 20.8 °C (69.4 °F).
On the coldest nights of the month, the temperature usually drops to around 3.5 °C (38 °F). However, it dropped to 1.1 °C (34 °F) in February 2003.
On the warmest days of the month, the temperature usually reaches around 27 °C (80.5 °F). However, it reached 35 °C (95 °F) in February 2019.
Precipitation amounts to 70 mm (2.8 in), distributed over 12 days.
The day lasts on average 13 hours and 35 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
The average sea temperature is of 15 °C (58.5 °F). Therefore, the sea is cold for swimming.

---

In March, the weather in Puerto Montt is usually mild. The average temperature is of 13.5 °C (56 °F), with a minimum of 8 °C (46.4 °F) and a maximum of 19 °C (66.1 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 2 °C (35.5 °F). However, it dropped to 0 °C (32 °F) in March 2002.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 24.5 °C (75.5 °F). However, it reached 29.1 °C (84.4 °F) in March 1998.
Precipitation amounts to 100 mm (3.9 in), distributed over 15 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).
The average sea temperature is of 14 °C (57.5 °F). Therefore, the sea is very cold for swimming.

---

In April, the weather in Puerto Montt is usually mild. The average temperature is of 11.2 °C (52 °F), with a minimum of 6.3 °C (43.4 °F) and a maximum of 16 °C (60.7 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 0 °C (32 °F). However, it dropped to -2 °C (28.4 °F) in April 2001.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 21.5 °C (70.5 °F). However, it reached 25.8 °C (78.4 °F) in April 1998.
Precipitation amounts to 150 mm (5.9 in), distributed over 19 days.
The day lasts on average 10 hours and 55 minutes.
There are on average 3.5 hours of sunshine per day. So, the sun shines 33% of the time.
The average humidity is 88%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).
The average sea temperature is of 13 °C (55 °F). Therefore, the sea is very cold for swimming.

---

In May, the weather in Puerto Montt is usually mild. The average temperature is of 9.6 °C (49 °F), with a minimum of 5.5 °C (41.9 °F) and a maximum of 13.6 °C (56.6 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -2 °C (29 °F). However, it dropped to -6 °C (21.2 °F) in May 2007.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 18.5 °C (65 °F). However, it reached 21.2 °C (70.2 °F) in May 2017.
Precipitation amounts to 195 mm (7.7 in), distributed over 22 days.
The day lasts on average 9 hours and 50 minutes.
There are on average 2 hours of sunshine per day. So, the sun shines 23% of the time.
The average humidity is 90%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
The average sea temperature is of 12 °C (53.5 °F). Therefore, the sea is very cold for swimming.

---

In June, the weather in Puerto Montt is usually quite mild. The average temperature is of 7.7 °C (46 °F), with a minimum of 4.1 °C (39.5 °F) and a maximum of 11.2 °C (52.1 °F).
On the coldest nights, the temperature usually drops to around -3 °C (27 °F). However, it dropped to -6 °C (21.2 °F) in June 1996.
On the warmest days, the temperature usually reaches around 15 °C (58.5 °F). However, it reached 19 °C (66.2 °F) in June 1994.
Precipitation amounts to 220 mm (8.7 in), distributed over 22 days.
The day lasts on average 9 hours and 10 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
There are on average 2 hours of sunshine per day. So, the sun shines 21% of the time.
The average humidity is 91%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).
The average sea temperature is of 11 °C (52 °F). Therefore, the sea is very cold for swimming.

---

In July, the coldest month of the year, the weather in Puerto Montt is usually quite mild. The average temperature is of 7.0 °C (45 °F), with a minimum of 3.2 °C (37.8 °F) and a maximum of 10.7 °C (51.3 °F).
On the coldest nights of the month, the temperature usually drops to around -3.5 °C (26 °F). However, it dropped to -5.8 °C (21.6 °F) in July 1991.
On the warmest days of the month, the temperature usually reaches around 14.5 °C (58 °F). However, it reached 21 °C (69.8 °F) in July 1996.
Precipitation amounts to 175 mm (6.9 in), distributed over 22 days.
The day lasts on average 9 hours and 30 minutes.
There are on average 2 hours of sunshine per day. So, the sun shines 23% of the time.
The average humidity is 90%. Hence, the air is normally humid.
The average wind speed is 12 kph (7 mph).
The average sea temperature is of 11 °C (51.5 °F). Therefore, the sea is very cold for swimming.

---

In August, the weather in Puerto Montt is usually quite mild. The average temperature is of 7.7 °C (46 °F), with a minimum of 3.7 °C (38.6 °F) and a maximum of 11.7 °C (53.1 °F).
On the coldest nights of the month, the temperature usually drops to around -2.5 °C (27.5 °F). However, it dropped to -5.1 °C (22.8 °F) in August 2010.
On the warmest days of the month, the temperature usually reaches around 15.5 °C (60 °F). However, it reached 20 °C (68 °F) in August 1992.
Precipitation amounts to 170 mm (6.7 in), distributed over 22 days.
The day lasts on average 10 hours and 35 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).
The average sea temperature is of 10.5 °C (51 °F). Therefore, the sea is very cold for swimming.

---

In September, the weather in Puerto Montt is usually mild. The average temperature is of 8.7 °C (48 °F), with a minimum of 4.1 °C (39.3 °F) and a maximum of 13.4 °C (56.1 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -1.5 °C (29 °F). However, it dropped to -3.1 °C (26.4 °F) in September 2000.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 18 °C (64.5 °F). However, it reached 23.7 °C (74.7 °F) in September 2012.
Precipitation amounts to 125 mm (4.9 in), distributed over 20 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 35% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
The average sea temperature is of 11 °C (51.5 °F). Therefore, the sea is very cold for swimming.

---

In October, the weather in Puerto Montt is usually mild. The average temperature is of 10.2 °C (50 °F), with a minimum of 5.4 °C (41.7 °F) and a maximum of 15.1 °C (59.2 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -0.5 °C (31.5 °F). However, it dropped to -2.3 °C (27.9 °F) in October 1994.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 20.5 °C (68.5 °F). However, it reached 24.1 °C (75.4 °F) in October 1995.
Precipitation amounts to 130 mm (5.1 in), distributed over 19 days.
The day lasts on average 13 hours and 20 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
The average sea temperature is of 11.5 °C (53 °F). Therefore, the sea is very cold for swimming.

---

In November, the weather in Puerto Montt is usually mild. The average temperature is of 12.0 °C (54 °F), with a minimum of 6.9 °C (44.4 °F) and a maximum of 17 °C (62.7 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 1.5 °C (34.5 °F). However, it dropped to -1 °C (30.2 °F) in November 2009.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 22.5 °C (72.5 °F). However, it reached 28 °C (82.4 °F) in November 1994.
Precipitation amounts to 105 mm (4.1 in), distributed over 17 days.
The day lasts on average 14 hours and 30 minutes. So the days are long.
There are on average 5.5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
The average sea temperature is of 12.5 °C (54.5 °F). Therefore, the sea is very cold for swimming.

---

In December, the weather in Puerto Montt is usually mild. The average temperature is of 13.7 °C (57 °F), with a minimum of 8.3 °C (47 °F) and a maximum of 19.1 °C (66.3 °F).
On the coldest nights of the month, the temperature usually drops to around 3 °C (37 °F). However, it dropped to -0.3 °C (31.5 °F) in December 2010.
On the warmest days of the month, the temperature usually reaches around 24.5 °C (76 °F). However, it reached 30.1 °C (86.2 °F) in December 1996.
Precipitation amounts to 90 mm (3.5 in), distributed over 15 days.
The day lasts on average 15 hours and 5 minutes. So the days are long. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.
There are on average 6.5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
The average sea temperature is of 14 °C (57 °F). Therefore, the sea is very cold for swimming.