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Climate in Sendai (Honshu)


Average weather, temperature, rainfall, sunshine hours

Flag - Japan

Sendai, where it is located


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Climate chart - Sendai
In Sendai, a Japanese city in the north-east of Honshu Island, in the region called Tohoku and in Miyagi Prefecture, at 38 degrees north latitude, the climate is temperate humid, with cold winters and warm, rainy summers. Like the rest of Japan, the city is affected by the monsoon circulation: in winter, the northwest cold currents will prevail, while in summer, they will be replaced by hot and humid currents of tropical origin (although to a lesser extent than in central and southern Japan).

In winter, temperatures are low: in January and February, lows are slightly below freezing (0 °C or 32 °F) and highs a few degrees above. Waves of intense cold are rare: usually, the temperature does not drop below -5 °C (23 °F), although the cold is fairly constant and the air is humid.
However, the coldest record in the city is -10 °C (14 °F), recorded in January 1967, while at the airport the temperature dropped to -11 °C (12 °F) in February 1990 and 1991.
Despite the fact that the city is located on the east coast, snow is quite common, and sometimes abundant. An average of about 60 centimeters (23.5 inches) of snow fals per year, distributed in 60 days (in most cases, however, it is sleet or light snow).

In summer, average temperatures are not too high, actually, during periods of bad weather, there is a cool northeast wind called Yamase. However, in this season, sunny periods, with hot and humid conditions, can occur (though more rarely than in Tokyo), and alternate with periods of bad weather, with wind and rain.

Precipitation is quite abundant, in fact, it amounts to 1,275 millimeters (50 inches) per year; winter is the driest season (at least in quantity, as drizzle or sleet often falls), while summer is the rainiest season because of the summer monsoon.

The amount of sunshine in Sendai is not exceptional: it is pretty good in winter (considering that the days are shorter), it reaches a relative maximum in spring, and then it declines in summer because of the monsoon.

Image of Sendai

The sea in Sendai, cold in winter, becomes acceptable for swimming in August and September, while it is still cool in July.

From June to October (but especially from August to early October), Sendai may be affected by typhoons, though typically with less frequency and intensity than in southern Japan.

Best Time



The best time to visit Sendai is spring, and in particular the month of May, as it is a mild and less rainy period than autumn. It must be said that even in June the temperatures are often pleasant, and in certain periods also in July and August, although the latter are rainier and less sunny months.
The cherry blossoming (Sakura) in Sendai reaches its peak around April 13th, about two or three weeks later than in Tokyo. About a week passes between the beginning and the peak of the flowering. The blooming date can vary by a few days, or even a week, earlier or later, depending on the year. During this period, there can be slightly cold days, with highs of around 10 °C (50 °F), and occasionally it can even snow.

Sendai - Climate data


In Sendai, the average temperature of the coldest month (January) is of 2,2 °C, that of the warmest month (August) is of 24,9 °C. Here are the average temperatures.
Sendai - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January-1,35,62,2
February-1,16,52,7
March1,4105,7
April6,315,510,9
May11,720,216
June16,123,119,6
July20,226,623,4
August21,628,224,9
September182521,5
October11,919,815,8
November5,614,19,8
December0,98,34,6
Year9,31713,1

Precipitation amounts to 1275 millimeters per year: it is therefore quite abundant. It ranges from 35 millimeters in the driest month (February) to 195 millimeters in the wettest one (September). Here is the average precipitation.
Sendai - Average precipitation
MonthRain (mm)Days
January408
February357
March759
April909
May11010
June14512
July18016
August16013
September19513
October15010
November607
December458
Year1275122

The sea temperature ranges from 9,5 °C in March to 24,5 °C in August. Here are the average sea temperatures.
Sendai - Sea temperature
MonthTemperatures (°C)
January11,5
February10
March9,5
April11,5
May14,5
June18,5
July21,5
August24,5
September23,5
October20,5
November17,5">
December14,5
Year16,5

There are on average around 1840 sunshine hours per year. Here are the average hours of sunshine per day.
Sendai - Sunshine hours
MonthAverageTotal
January5150
February5,5155
March6180
April6,5195
May6190
June5145
July4125
August4,5145
September4,5130
October4,5145
November5145
December4,5135
Year51840

Sendai - Weather by month

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


January, the coldest month of the year, is generally a cold month. The average temperature is of 2,2 °C, with a minimum of -1,3 °C and a maximum of 5,6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -5 °C. However, it dropped to -7,3 °C in January 2001.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 12 °C. However, it reached 15,6 °C in January 1997.
Rain iconPrecipitation amounts to 40 mm, distributed over 8 days.
The day lasts on average 9 hours and 55 minutes.
Sun iconThere are on average 5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 66%.
The average wind speed is of 10 kph.
Sea iconThe average sea temperature is of 11,6 °C. Therefore, the sea is very cold for swimming.


February is generally a cold month. The average temperature is of 2,7 °C, with a minimum of -1,1 °C and a maximum of 6,5 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -5 °C. However, it dropped to -7,5 °C in February 2006.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 14 °C. However, it reached 20,9 °C in February 2016.
Rain iconPrecipitation amounts to 35 mm, distributed over 7 days.
The day lasts on average 10 hours and 50 minutes.
Sun iconThere are on average 5,5 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 64%.
The average wind speed is of 10 kph.
Sea iconThe average sea temperature is of 9,8 °C. Therefore, the sea is very cold for swimming.


March is generally a quite cold month. The average temperature is of 5,7 °C, with a minimum of 1,4 °C and a maximum of 10 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -2,5 °C. However, it dropped to -4,6 °C in March 2005.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 18 °C. However, it reached 24,2 °C in March 2009.
Rain iconPrecipitation amounts to 75 mm, distributed over 9 days.
The day lasts on average 12 hours and 0 minutes.
Sun iconThere are on average 6 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 61%.
The average wind speed is of 11 kph.
Sea iconThe average sea temperature is of 9,7 °C. Therefore, the sea is very cold for swimming.


April is generally a mild month. The average temperature is of 10,9 °C, with a minimum of 6,3 °C and a maximum of 15,5 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 1 °C. However, it dropped to -1,2 °C in April 1991.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 24 °C. However, it reached 29,9 °C in April 2018.
Rain iconPrecipitation amounts to 90 mm, distributed over 9 days.
The day lasts on average 13 hours and 10 minutes.
Sun iconThere are on average 6,5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 63%.
The average wind speed is of 11 kph.
Sea iconThe average sea temperature is of 11,4 °C. Therefore, the sea is very cold for swimming.


May is generally a very mild month. The average temperature is of 16 °C, with a minimum of 11,7 °C and a maximum of 20,2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 6,5 °C. However, it dropped to 1,8 °C in May 1992.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27,5 °C. However, it reached 32,1 °C in May 2019.
Rain iconPrecipitation amounts to 110 mm, distributed over 10 days.
The day lasts on average 14 hours and 20 minutes.
Sun iconThere are on average 6 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 70%.
The average wind speed is of 10 kph.
Sea iconThe average sea temperature is of 14,5 °C. Therefore, the sea is very cold for swimming.


June is generally a warm month. The average temperature is of 19,6 °C, with a minimum of 16,1 °C and a maximum of 23,1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 11,5 °C. However, it dropped to 8,6 °C in June 2010.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 29,5 °C. However, it reached 34,4 °C in June 2011.
Rain iconPrecipitation amounts to 145 mm, distributed over 12 days.
The day lasts on average 14 hours and 50 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
Sun iconThere are on average 5 hours of sunshine per day. So, the sun shines 32% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of 9 kph.
Sea iconThe average sea temperature is of 18,5 °C. Therefore, the sea is very cool for swimming.


July is generally a warm to hot, muggy month. The average temperature is of 23,4 °C, with a minimum of 20,2 °C and a maximum of 26,6 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 16,5 °C. However, it dropped to 12,6 °C in July 1993.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 33 °C. However, it reached 36,7 °C in July 2018.
Rain iconPrecipitation amounts to 180 mm, distributed over 16 days.
The day lasts on average 14 hours and 30 minutes.
Sun iconThere are on average 4 hours of sunshine per day. So, the sun shines 28% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is of 8 kph.
Sea iconThe average sea temperature is of 21,7 °C. Therefore, the sea is cool for swimming.


August, the warmest month of the year, is generally a warm to hot, muggy month. The average temperature is of 24,9 °C, with a minimum of 21,6 °C and a maximum of 28,2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 17,5 °C. However, it dropped to 14,6 °C in August 1991.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 34 °C. However, it reached 37,3 °C in August 2018.
Rain iconPrecipitation amounts to 160 mm, distributed over 13 days.
The day lasts on average 13 hours and 35 minutes.
Sun iconThere are on average 4,5 hours of sunshine per day. So, the sun shines 34% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 9 kph.
Sea iconThe average sea temperature is of 24,5 °C. Therefore, the sea is warm enough for swimming.


September is generally a warm month. The average temperature is of 21,5 °C, with a minimum of 18 °C and a maximum of 25 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 12,5 °C. However, it dropped to 8,2 °C in September 2001.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 31,5 °C. However, it reached 35,5 °C in September 2010.
Rain iconPrecipitation amounts to 195 mm, distributed over 13 days.
The day lasts on average 12 hours and 25 minutes.
Sun iconThere are on average 4,5 hours of sunshine per day. So, the sun shines 34% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of 8 kph.
Sea iconThe average sea temperature is of 23,4 °C. Therefore, the sea can be considered barely acceptable for swimming.


October is generally a very mild month. The average temperature is of 15,8 °C, with a minimum of 11,9 °C and a maximum of 19,8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 6 °C. However, it dropped to 2,7 °C in October 2004.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 26,5 °C. However, it reached 29,9 °C in October 1998.
Rain iconPrecipitation amounts to 150 mm, distributed over 10 days.
The day lasts on average 11 hours and 10 minutes.
Sun iconThere are on average 4,5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of 9 kph.
Sea iconThe average sea temperature is of 20,3 °C. Therefore, the sea is cool for swimming.


November is generally a mild month. The average temperature is of 9,8 °C, with a minimum of 5,6 °C and a maximum of 14,1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 0,5 °C. However, it dropped to -1,6 °C in November 2016.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 20,5 °C. However, it reached 24 °C in November 2009.
Rain iconPrecipitation amounts to 60 mm, distributed over 7 days.
The day lasts on average 10 hours and 5 minutes.
Sun iconThere are on average 5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 68%.
The average wind speed is of 9 kph.
Sea iconThe average sea temperature is of 17,4 °C. Therefore, the sea is cold for swimming.


December is generally a quite cold month. The average temperature is of 4,6 °C, with a minimum of 0,9 °C and a maximum of 8,3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -3 °C. However, it dropped to -5,4 °C in December 2020.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 15,5 °C. However, it reached 21,6 °C in December 2004.
Rain iconPrecipitation amounts to 45 mm, distributed over 8 days.
The day lasts on average 9 hours and 35 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
Sun iconThere are on average 4,5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 68%.
The average wind speed is of 10 kph.
Sea iconThe average sea temperature is of 14,5 °C. Therefore, the sea is very cold for swimming.

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