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Climate in Isle Of Man (United Kingdom)


Average weather, temperature, rainfall, sunshine hours

Flag - United Kingdom

Isle of Man, where it is located


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Climate chart - Isle Of Man
The climate of the Isle of Man is oceanic, cool and humid throughout the year.
The island, a British Crown dependency, is located between Northern Ireland and north-western England.

Precipitation amounts to 865 millimeters (34 inches) per year. It is well distributed over the seasons, and is frequent also in summer. However, the wettest period is from October to January.
On the hills that lie in the interior of the island, precipitation is more abundant, so that at the top of Snaefell, at 621 meters (2,037 feet) above sea level, 1,900 mm (75 in) of rain fall per year (and winter snowfalls are also more frequent).

Winter, from December to February, is quite cold: temperatures are not so low, but wind and humidity can increase the sensation of cold. The sky is often cloudy, and rainfall is frequent. Sometimes, intense Atlantic depressions can cause wind storms.
Snowfalls are relatively rare and not abundant (at least at sea level).
Usually, cold spells are not intense and do not last long. On the coldest nights of the year, the temperature generally drops to -2/-3 °C (27/28 °F), and more rarely to lower values. The coldest record is -9 °C (15.8 °F) and was set in December 1961.

In spring, from March to May, the temperature slowly rises, and Atlantic fronts continue to affect this area more or less as in the rest of the year, although they are a bit less intense than in winter. In May, it is often still quite cold, especially in the first half of the month.

Summer, from June to August, is cool, wet and cloudy, with quite frequent rains. Sunny days, or at least those in which the sky is completely clear from dawn to dusk, are quite rare.
Hot days are rare: the temperature may not reach 25 °C (77 °F) for an entire summer. The highest record is 29 °C (84.2 °F) and was set in July 1983.

Autumn, from September to November, is gray, cloudy and rainy as in the rest of the year, and with each passing week, it gets progressively colder. In November, the wind is often moderate or strong.

Peel Castle

The amount of sunshine in the Isle of Man is not good. However, the (relatively) sunniest season is spring, when the sun also shines a little more often than in Ireland or in northern England. Entire days with totally clear skies are rare: it's more likely for the sky to be partly cloudy.

The Irish Sea is cold all year round, in fact, it reaches at most 15 °C (59 °F) in August.

Best Time


The best time to visit the Isle of Man runs from mid-May to mid-September; May and June are cooler months, but they are relatively sunnier. July and August are the warmest months, or the least cool, however, it's better to bring a jacket, a sweatshirt and a sweater also in midsummer.

The following weather data was recorded at Ronaldsway Airport.

Isle Of Man - Climate data


In Isle Of Man, the average temperature of the coldest month (February) is of 6,2 °C, that of the warmest month (August) is of 15,4 °C. Here are the average temperatures.
Isle Of Man - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January4,68,46,5
February4,18,36,2
March4,59,36,9
April5,811,48,6
May8,114,211,1
June10,616,613,6
July12,31815,2
August12,618,115,4
September11,316,413,8
October9,213,711,4
November6,9119
December58,97
Year7,912,910,4

Precipitation amounts to 865 millimeters per year: so, it is at an intermediate level. It ranges from 50 millimeters in the driest month (May) to 105 millimeters in the wettest ones (October, November) Here is the average precipitation.
Isle Of Man - Average precipitation
MonthRain (mm)Days
January8514
February6011
March6512
April5510
May5010
June6010
July559
August6511
September7511
October10514
November10515
December9014
Year865140

The sea temperature ranges from 7 °C in February, March to 15 °C in August. Here are the average sea temperatures.
Isle Of Man - Sea temperature
MonthTemperatures (°C)
January8,5
February7
March7
April8
May10
June12
July14
August15
September14,5
October13,5
November12">
December10
Year11,1

There are on average around 1590 sunshine hours per year. Here are the average hours of sunshine per day.
Isle Of Man - Sunshine hours
MonthAverageTotal
January255
February380
March3,5115
April5,5170
May7,5230
June7205
July6,5195
August6185
September4,5140
October3,5105
November265
December1,545
Year4,41590

Isle of Man - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)


January is generally a quite cold month. The average temperature is of 6,5 °C, with a minimum of 4,6 °C and a maximum of 8,4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -1 °C. However, it dropped to -5,3 °C in January 2010.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 11,5 °C. However, it reached 13,3 °C in January 2003.
Rain iconPrecipitation amounts to 85 mm, distributed over 14 days.
The day lasts on average 8 hours and 0 minutes.
Sun iconThere are on average 2 hours of sunshine per day. So, the sun shines 23% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 28,3 kph.
Sea iconThe average sea temperature is of 8,3 °C. Therefore, the sea is very cold for swimming.


February, the coldest month of the year, is generally a quite cold month. The average temperature is of 6,2 °C, with a minimum of 4,1 °C and a maximum of 8,3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -1 °C. However, it dropped to -3,2 °C in February 1994.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 11 °C. However, it reached 13,2 °C in February 2017.
Rain iconPrecipitation amounts to 60 mm, distributed over 11 days.
The day lasts on average 9 hours and 50 minutes.
Sun iconThere are on average 3 hours of sunshine per day. So, the sun shines 28% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 26,8 kph.
Sea iconThe average sea temperature is of 7,2 °C. Therefore, the sea is very cold for swimming.


March is generally a quite mild month. The average temperature is of 6,9 °C, with a minimum of 4,5 °C and a maximum of 9,3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -0,5 °C. However, it dropped to -3,8 °C in March 2006.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 12,5 °C. However, it reached 17,1 °C in March 2012.
Rain iconPrecipitation amounts to 65 mm, distributed over 12 days.
The day lasts on average 12 hours and 0 minutes.
Sun iconThere are on average 3,5 hours of sunshine per day. So, the sun shines 31% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 24,1 kph.
Sea iconThe average sea temperature is of 7,1 °C. Therefore, the sea is very cold for swimming.


April is generally a mild month. The average temperature is of 8,6 °C, with a minimum of 5,8 °C and a maximum of 11,4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 1 °C. However, it dropped to -1,4 °C in April 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 15,5 °C. However, it reached 20 °C in April 2003.
Rain iconPrecipitation amounts to 55 mm, distributed over 10 days.
The day lasts on average 14 hours and 10 minutes.
Sun iconThere are on average 5,5 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of 20,7 kph.
Sea iconThe average sea temperature is of 8,1 °C. Therefore, the sea is very cold for swimming.


May is generally a mild month. The average temperature is of 11,1 °C, with a minimum of 8,1 °C and a maximum of 14,2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 3,5 °C. However, it dropped to 0,5 °C in May 1996.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 20 °C. However, it reached 23,6 °C in May 2018.
Rain iconPrecipitation amounts to 50 mm, distributed over 10 days.
The day lasts on average 16 hours and 5 minutes.
Sun iconThere are on average 7,5 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 of 19,6 kph.
Sea iconThe average sea temperature is of 10 °C. Therefore, the sea is very cold for swimming.


June is generally a mild month. The average temperature is of 13,6 °C, with a minimum of 10,6 °C and a maximum of 16,6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 6,5 °C. However, it dropped to 1,4 °C in June 1991.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 22 °C. However, it reached 27,4 °C in June 2018.
Rain iconPrecipitation amounts to 60 mm, distributed over 10 days.
The day lasts on average 17 hours and 5 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 18 kph.
Sea iconThe average sea temperature is of 12,2 °C. Therefore, the sea is very cold for swimming.


July is generally a very mild month. The average temperature is of 15,2 °C, with a minimum of 12,3 °C and a maximum of 18 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 9 °C. However, it dropped to 6,9 °C in July 2001.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 23 °C. However, it reached 27,7 °C in July 2003.
Rain iconPrecipitation amounts to 55 mm, distributed over 9 days.
The day lasts on average 16 hours and 30 minutes.
Sun iconThere are on average 6,5 hours of sunshine per day. So, the sun shines 39% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 17,1 kph.
Sea iconThe average sea temperature is of 14 °C. Therefore, the sea is very cold for swimming.


August, the warmest month of the year, is generally a very mild month. The average temperature is of 15,4 °C, with a minimum of 12,6 °C and a maximum of 18,1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 8,5 °C. However, it dropped to 6,6 °C in August 2014.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 21,5 °C. However, it reached 27,8 °C in August 1995.
Rain iconPrecipitation amounts to 65 mm, distributed over 11 days.
The day lasts on average 14 hours and 50 minutes.
Sun iconThere are on average 6 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of 18,1 kph.
Sea iconThe average sea temperature is of 14,9 °C. Therefore, the sea is cold for swimming.


September is generally a mild month. The average temperature is of 13,8 °C, with a minimum of 11,3 °C and a maximum of 16,4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 6,5 °C. However, it dropped to 3,7 °C in September 1993.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 19,5 °C. However, it reached 24,4 °C in September 2016.
Rain iconPrecipitation amounts to 75 mm, distributed over 11 days.
The day lasts on average 12 hours and 35 minutes.
Sun iconThere are on average 4,5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 20,6 kph.
Sea iconThe average sea temperature is of 14,7 °C. Therefore, the sea is very cold for swimming.


October is generally a mild month. The average temperature is of 11,4 °C, with a minimum of 9,2 °C and a maximum of 13,7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 3,5 °C. However, it dropped to -1,5 °C in October 1993.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 17 °C. However, it reached 22,7 °C in October 2005.
Rain iconPrecipitation amounts to 105 mm, distributed over 14 days.
The day lasts on average 10 hours and 25 minutes.
Sun iconThere are on average 3,5 hours of sunshine per day. So, the sun shines 32% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 24,6 kph.
Sea iconThe average sea temperature is of 13,7 °C. Therefore, the sea is very cold for swimming.


November is generally a mild month. The average temperature is of 9 °C, with a minimum of 6,9 °C and a maximum of 11 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 0,5 °C. However, it dropped to -4 °C in November 2010.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 14,5 °C. However, it reached 16,3 °C in November 2007.
Rain iconPrecipitation amounts to 105 mm, distributed over 15 days.
The day lasts on average 8 hours and 30 minutes.
Sun iconThere are on average 2 hours of sunshine per day. So, the sun shines 25% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 26,3 kph.
Sea iconThe average sea temperature is of 12 °C. Therefore, the sea is very cold for swimming.


December is generally a quite mild month. The average temperature is of 7 °C, with a minimum of 5 °C and a maximum of 8,9 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -1 °C. However, it dropped to -6,5 °C in December 1995.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 12,5 °C. However, it reached 14,3 °C in December 2001.
Rain iconPrecipitation amounts to 90 mm, distributed over 14 days.
The day lasts on average 7 hours and 25 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
Sun iconThere are on average 1,5 hours of sunshine per day. So, the sun shines 20% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 27,6 kph.
Sea iconThe average sea temperature is of 10,1 °C. Therefore, the sea is very cold for swimming.

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