Ishinomaki, Miyagi Weather by Month and Climate Averages

Ishinomaki, Miyagi gets 919 mm of precipitation a year over about 81 rainy days. August is the warmest month (average high 27°C) and January the coldest (average low -3°C).

Ishinomaki climate at a glance

Humid subtropical climate

Ishinomaki, Miyagi has warm summers and chilly winters. Daytime highs range from about 5°C in January to 27°C in August. September is usually the wettest month. The most comfortable time to visit is typically May to July and October, when daytime highs sit near 21°C.

How much rain does Ishinomaki get?

Ishinomaki gets 919 mm of precipitation in an average year, spread over about 81 days with measurable rain. That is fewer rainy days than 99% of Japan.

September is the wettest month, with 135 mm. February is the driest, with 25 mm. July has the most rainy days, about 10.

The longest dry spell in the last five years lasted 22 days, to January 13, 2023.

Ishinomaki weather by month

Ishinomaki weather in January

In January, Ishinomaki averages a high of 5°C and a low of -3°C. It gets 31 mm of precipitation over about 5 rainy days. The sun is out about 48% of daylight hours. The January record high is 15°C (1973) and the record low is -11°C (2021).

Ishinomaki weather in February

In February, Ishinomaki averages a high of 6°C and a low of -3°C. It gets 25 mm of precipitation over about 5 rainy days. The sun is out about 47% of daylight hours. The February record high is 19°C (1993) and the record low is -11°C (1977).

Ishinomaki weather in March

In March, Ishinomaki averages a high of 9°C and a low of 0°C. It gets 55 mm of precipitation over about 6 rainy days. The sun is out about 43% of daylight hours. The March record high is 21°C (2021) and the record low is -8°C (1970).

Ishinomaki weather in April

In April, Ishinomaki averages a high of 14°C and a low of 5°C. It gets 69 mm of precipitation over about 7 rainy days. The sun is out about 45% of daylight hours. The April record high is 28°C (2018) and the record low is -3°C (1981).

Ishinomaki weather in May

In May, Ishinomaki averages a high of 19°C and a low of 11°C. It gets 83 mm of precipitation over about 7 rainy days. The sun is out about 38% of daylight hours. The May record high is 31°C (2016) and the record low is 1°C (1992). May is one of the most comfortable months to visit.

Ishinomaki weather in June

In June, Ishinomaki averages a high of 22°C and a low of 16°C. It gets 92 mm of precipitation over about 8 rainy days. The sun is out about 30% of daylight hours. The June record high is 34°C (2022) and the record low is 7°C (2010). June is one of the most comfortable months to visit.

Ishinomaki weather in July

In July, Ishinomaki averages a high of 26°C and a low of 19°C. It gets 115 mm of precipitation over about 10 rainy days. The sun is out about 25% of daylight hours. The July record high is 36°C (2011) and the record low is 8°C (1976). July is one of the most comfortable months to visit.

Ishinomaki weather in August

In August, Ishinomaki averages a high of 27°C and a low of 21°C. It gets 105 mm of precipitation over about 8 rainy days. The sun is out about 34% of daylight hours. The August record high is 37°C (2007) and the record low is 13°C (1980).

Ishinomaki weather in September

In September, Ishinomaki averages a high of 24°C and a low of 17°C. It gets 135 mm of precipitation over about 9 rainy days. The sun is out about 28% of daylight hours. The September record high is 34°C (2000) and the record low is 7°C (1981).

Ishinomaki weather in October

In October, Ishinomaki averages a high of 19°C and a low of 10°C. It gets 120 mm of precipitation over about 7 rainy days. The sun is out about 41% of daylight hours. The October record high is 28°C (2018) and the record low is 1°C (1983). October is one of the most comfortable months to visit.

Ishinomaki weather in November

In November, Ishinomaki averages a high of 13°C and a low of 4°C. It gets 53 mm of precipitation over about 5 rainy days. The sun is out about 52% of daylight hours. The November record high is 24°C (1979) and the record low is -4°C (1970).

Ishinomaki weather in December

In December, Ishinomaki averages a high of 7°C and a low of -1°C. It gets 37 mm of precipitation over about 6 rainy days. The sun is out about 49% of daylight hours. The December record high is 22°C (1990) and the record low is -8°C (1976).

Sunshine, humidity and wind in Ishinomaki

November is the sunniest month in Ishinomaki, with sunshine about 52% of daylight hours. July is the cloudiest, at 25%. Over the year the sun shines about 40% of daylight hours. Ishinomaki is sunnier than 63% of Japan.

Humidity peaks in July at 85% and is lowest in February at 65%.

Ishinomaki has about 4 days a year above 32°C. Ishinomaki is cooler than 84% of Japan.

First and last freeze in Ishinomaki

The first fall freeze in Ishinomaki typically comes around November 22, and the last spring freeze around April 4. That leaves a frost-free growing season of about 232 days.

Ishinomaki weather records

The hottest temperature on record at the Ishinomaki station is 37°C, on August 15, 2007. The coldest is -11°C, on February 17, 1978.

The wettest day on record brought 188 mm of rain, on September 21, 2011.

40 all-time records have been set at the station since 1970.

The best time to visit Ishinomaki

The most comfortable time to visit is typically May to July and October, when daytime highs sit near 21°C.

Winter (December–February) is chilly, with average highs around 6°C and lows near -2°C.

Spring (March–May) is mild, with average highs around 14°C and lows near 5°C.

Summer (June–August) is warm, with average highs around 25°C and lows near 18°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 19°C and lows near 10°C.

Monthly climate

MonthPrecipRain daysHumiditySunshineSea tempRecord highRecord low
January31 mm567%48%-12°15°-11°
February25 mm565%47%-13°19°-11°
March55 mm668%43%-13°21°-8°
April69 mm768%45%-12°28°-3°
May83 mm774%38%-10°31°
June92 mm881%30%-7°34°
July115 mm1085%25%-5°36°
August105 mm884%34%-4°37°13°
September135 mm980%28%-4°34°
October120 mm774%41%-7°28°
November53 mm572%52%-8°24°-4°
December37 mm670%49%-10°22°-8°

From ERA5 reanalysis. Sunshine is estimated from cloud cover.

Ishinomaki climate questions

How much rain does Ishinomaki get?

Ishinomaki gets 919 mm of precipitation in an average year, over about 81 rainy days.

What is the wettest month in Ishinomaki?

September is the wettest month in Ishinomaki, with 135 mm. February is the driest, with 25 mm.

How many rainy days does Ishinomaki have a year?

Ishinomaki has about 81 days with measurable rain in an average year. July has the most, about 10.

What is the hottest month in Ishinomaki?

August is the warmest month in Ishinomaki, with an average high of 27°C.

What is the coldest month in Ishinomaki?

January is the coldest month in Ishinomaki, with an average low of -3°C.

What is the record high temperature in Ishinomaki?

The record high at the Ishinomaki station is 37°C, set on August 15, 2007. The record low is -11°C, on February 17, 1978.

What is the sunniest month in Ishinomaki?

November is the sunniest month in Ishinomaki, with sunshine about 52% of daylight hours. July is the cloudiest.

When is the first frost in Ishinomaki?

The first fall freeze in Ishinomaki typically comes around November 22. The last spring freeze is around April 4.

What is the best time to visit Ishinomaki?

The most comfortable time to visit is typically May to July and October, when daytime highs sit near 21°C.

Source: NOAA GHCN-Daily station ISHINOMAKI (2 km away).

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Normals from NOAA GHCN-Daily station ISHINOMAKI.