Climate - Muonio (Finland)

The climate of Muonio is cold continental, with freezing winters and mild summers.
The town is located at 240 meters (800 feet) above sea level, in northern Finland, in Lapland, on the border with Sweden.
The latitude (67° 57' N) shows that we are just north of the Polar Circle. The midnight sun can be seen from May 28th to July 17th. The white nights, when the sun sets but it doesn't get completely dark even at midnight, occur before and after the period of the midnight sun, ie from April 17th, and until August 27th.
In winter, the sun does not rise (polar night) from December 10 to January 2.
In winter, there can be cold spells of arctic origin. The coldest record is -46.2 °C (-51.2 °F) and was set in January 1999.
In summer, there can be short hot periods. The highest record is 30.8 °C (87.4 °F) and was set in July 2018.

Best Time

The best time to visit Muonio is the summer, from June to August, since it is the mildest season. However, you must take into account some rainy days and a bit of cold at night.

Muonio - Climate data

In Muonio, the average temperature of the coldest month (January) is of -13.5 °C (7.7 °F), that of the warmest month (July) is of 14.4 °C (57.8 °F). Here are the average temperatures.
In Muonio, precipitation amounts to 535 millimeters (21.1 inches) per year: so, it is at an intermediate level. It ranges from 25 mm (1 in) in the driest months (February, March) to 75 mm (3 in) in the wettest one (July). Here is the average precipitation.

Muonio - Weather by month

Based on the period 1991-2020

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In January, the coldest month of the year, the weather in Muonio is usually freezing cold. The average temperature is of -13.5 °C (8 °F), with a minimum of -18 °C (-0.3 °F) and a maximum of -9 °C (15.8 °F).
On the coldest nights of the month, the temperature usually drops to around -33.5 °C (-28.5 °F). However, it dropped to -46.2 °C (-51.2 °F) in January 1999.
On the warmest days of the month, the temperature usually reaches around 1 °C (33.5 °F). However, it reached 5.2 °C (41.4 °F) in January 2002.
Precipitation amounts to 30 mm (1.2 in), distributed over 9 days.
The day lasts on average 3 hours and 30 minutes. So the days are very short.

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In February, the weather in Muonio is usually freezing cold. The average temperature is of -13.0 °C (9 °F), with a minimum of -17.4 °C (0.7 °F) and a maximum of -8.6 °C (16.6 °F).
On the coldest nights of the month, the temperature usually drops to around -32.5 °C (-27 °F). However, it dropped to -41.1 °C (-42 °F) in February 1998.
On the warmest days of the month, the temperature usually reaches around 1.5 °C (35 °F). However, it reached 7.1 °C (44.8 °F) in February 2017.
Precipitation amounts to 25 mm (1 in), distributed over 9 days.
The day lasts on average 7 hours and 55 minutes. So the days are short.

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In March, the weather in Muonio is usually freezing cold. The average temperature is of -7.7 °C (18 °F), with a minimum of -13 °C (8.7 °F) and a maximum of -2.4 °C (27.6 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -28 °C (-18 °F). However, it dropped to -35.9 °C (-32.6 °F) in March 1998.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 5.5 °C (41.5 °F). However, it reached 9.8 °C (49.6 °F) in March 2007.
Precipitation amounts to 25 mm (1 in), distributed over 7 days.
The day lasts on average 11 hours and 50 minutes.

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In April, the weather in Muonio is usually very cold. The average temperature is of -1.4 °C (29 °F), with a minimum of -6.2 °C (20.8 °F) and a maximum of 3.5 °C (38.2 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -19 °C (-2 °F). However, it dropped to -26 °C (-14.8 °F) in April 1991.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 10.5 °C (51 °F). However, it reached 16.9 °C (62.4 °F) in April 2008.
Precipitation amounts to 30 mm (1.2 in), distributed over 7 days.
The day lasts on average 15 hours and 50 minutes.

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In May, the weather in Muonio is usually quite cold. The average temperature is of 5.2 °C (41 °F), with a minimum of 0.4 °C (32.8 °F) and a maximum of 9.9 °C (49.9 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -6.5 °C (20 °F). However, it dropped to -14.5 °C (5.9 °F) in May 2014.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 20 °C (68 °F). However, it reached 28.4 °C (83.1 °F) in May 2013.
Precipitation amounts to 40 mm (1.6 in), distributed over 8 days.
The day lasts on average 20 hours and 50 minutes. So the days are very long.

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In June, the weather in Muonio is usually mild. The average temperature is of 11.2 °C (52 °F), with a minimum of 6.5 °C (43.7 °F) and a maximum of 15.8 °C (60.5 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 0 °C (32.5 °F). However, it dropped to -2 °C (28.4 °F) in June 1998.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 24 °C (75.5 °F). However, it reached 30.5 °C (86.9 °F) in June 2006.
Precipitation amounts to 65 mm (2.6 in), distributed over 11 days.
The day lasts on average 24 hours and 0 minutes. So the sun is always above the horizon.

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In July, the warmest month of the year, the weather in Muonio is usually mild. The average temperature is of 14.4 °C (58 °F), with a minimum of 9.6 °C (49.3 °F) and a maximum of 19.1 °C (66.4 °F).
On the coldest nights of the month, the temperature usually drops to around 3.5 °C (38.5 °F). However, it dropped to -0.5 °C (31.1 °F) in July 2017.
On the warmest days of the month, the temperature usually reaches around 25.5 °C (77.5 °F). However, it reached 30.8 °C (87.4 °F) in July 2018.
Precipitation amounts to 75 mm (3 in), distributed over 12 days.
The day lasts on average 22 hours and 35 minutes. So the days are very long.

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In August, the weather in Muonio is usually mild. The average temperature is of 11.9 °C (53 °F), with a minimum of 7.3 °C (45.1 °F) and a maximum of 16.5 °C (61.7 °F).
On the coldest nights of the month, the temperature usually drops to around -1 °C (30 °F). However, it dropped to -4.1 °C (24.6 °F) in August 1994.
On the warmest days of the month, the temperature usually reaches around 23.5 °C (74.5 °F). However, it reached 28.7 °C (83.7 °F) in August 2014.
Precipitation amounts to 70 mm (2.8 in), distributed over 11 days.
The day lasts on average 17 hours and 20 minutes. So the days are very long.

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In September, the weather in Muonio is usually quite mild. The average temperature is of 6.6 °C (44 °F), with a minimum of 2.7 °C (36.9 °F) and a maximum of 10.5 °C (50.8 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -5 °C (22.5 °F). However, it dropped to -9.5 °C (14.9 °F) in September 1995.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 17.5 °C (63.5 °F). However, it reached 22.4 °C (72.3 °F) in September 2018.
Precipitation amounts to 50 mm (2 in), distributed over 9 days.
The day lasts on average 13 hours and 10 minutes.

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In October, the weather in Muonio is usually very cold. The average temperature is of -1.0 °C (30 °F), with a minimum of -4 °C (24.8 °F) and a maximum of 2.1 °C (35.8 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -16.5 °C (2 °F). However, it dropped to -26 °C (-14.8 °F) in October 1993.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 9.5 °C (49 °F). However, it reached 13.4 °C (56.1 °F) in October 2018.
Precipitation amounts to 45 mm (1.8 in), distributed over 9 days.
The day lasts on average 9 hours and 10 minutes.

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In November, the weather in Muonio is usually freezing cold. The average temperature is of -7.6 °C (18 °F), with a minimum of -11 °C (12.2 °F) and a maximum of -4.1 °C (24.5 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -25 °C (-13 °F). However, it dropped to -36 °C (-32.8 °F) in November 1995.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 2.5 °C (36.5 °F). However, it reached 7 °C (44.6 °F) in November 2005.
Precipitation amounts to 40 mm (1.6 in), distributed over 10 days.
The day lasts on average 5 hours and 30 minutes. So the days are short.

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In December, the weather in Muonio is usually freezing cold. The average temperature is of -11.4 °C (12 °F), with a minimum of -15.6 °C (3.9 °F) and a maximum of -7.2 °C (19.1 °F).
On the coldest nights of the month, the temperature usually drops to around -30 °C (-22 °F). However, it dropped to -38.4 °C (-37.1 °F) in December 2013.
On the warmest days of the month, the temperature usually reaches around 2 °C (36 °F). However, it reached 6.2 °C (43.2 °F) in December 1997.
Precipitation amounts to 35 mm (1.4 in), distributed over 11 days.
The day lasts on average 0 hours and 30 minutes. So the days are very short. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.