Saijō, Ehime Weather by Month and Climate Averages

Saijō, Ehime gets 1309 mm of precipitation a year over about 102 rainy days. August is the warmest month (average high 32°C) and January the coldest (average low 2°C).

Saijō climate at a glance

Humid subtropical climate

Saijō, Ehime has hot summers and chilly winters. Daytime highs range from about 10°C in January to 32°C in August. July is usually the wettest month. The most comfortable time to visit is typically April to May and October to November, when daytime highs sit near 21°C.

How much rain does Saijō get?

Saijō gets 1309 mm of precipitation in an average year, spread over about 102 days with measurable rain. That is fewer rainy days than 70% of Japan.

July is the wettest month, with 216 mm. January is the driest, with 46 mm. June has the most rainy days, about 11.

The longest dry spell in the last five years lasted 22 days, to October 10, 2021.

Saijō weather by month

Saijō weather in January

In January, Saijō averages a high of 10°C and a low of 2°C. It gets 46 mm of precipitation over about 7 rainy days. The sun is out about 45% of daylight hours. The January record high is 21°C (1997) and the record low is -3°C (1974).

Saijō weather in February

In February, Saijō averages a high of 11°C and a low of 2°C. It gets 61 mm of precipitation over about 8 rainy days. The sun is out about 44% of daylight hours. The February record high is 24°C (2004) and the record low is -6°C (1977).

Saijō weather in March

In March, Saijō averages a high of 14°C and a low of 5°C. It gets 98 mm of precipitation over about 10 rainy days. The sun is out about 42% of daylight hours. The March record high is 28°C (2010) and the record low is -3°C (1984).

Saijō weather in April

In April, Saijō averages a high of 19°C and a low of 9°C. It gets 99 mm of precipitation over about 9 rainy days. The sun is out about 40% of daylight hours. The April record high is 34°C (1998) and the record low is -2°C (1972). April is one of the most comfortable months to visit.

Saijō weather in May

In May, Saijō averages a high of 24°C and a low of 14°C. It gets 119 mm of precipitation over about 8 rainy days. The sun is out about 34% of daylight hours. The May record high is 33°C (1994) and the record low is 6°C (1980). May is one of the most comfortable months to visit.

Saijō weather in June

In June, Saijō averages a high of 27°C and a low of 19°C. It gets 204 mm of precipitation over about 11 rainy days. The sun is out about 23% of daylight hours. The June record high is 36°C (2022) and the record low is 10°C (1978).

Saijō weather in July

In July, Saijō averages a high of 31°C and a low of 23°C. It gets 216 mm of precipitation over about 10 rainy days. The sun is out about 28% of daylight hours. The July record high is 37°C (1994) and the record low is 16°C (2026).

Saijō weather in August

In August, Saijō averages a high of 32°C and a low of 24°C. It gets 99 mm of precipitation over about 8 rainy days. The sun is out about 40% of daylight hours. The August record high is 37°C (2017) and the record low is 18°C (1981).

Saijō weather in September

In September, Saijō averages a high of 29°C and a low of 21°C. It gets 133 mm of precipitation over about 9 rainy days. The sun is out about 34% of daylight hours. The September record high is 36°C (2010) and the record low is 11°C (1987).

Saijō weather in October

In October, Saijō averages a high of 24°C and a low of 14°C. It gets 107 mm of precipitation over about 7 rainy days. The sun is out about 48% of daylight hours. The October record high is 33°C (2019) and the record low is 4°C (1986). October is one of the most comfortable months to visit.

Saijō weather in November

In November, Saijō averages a high of 18°C and a low of 9°C. It gets 68 mm of precipitation over about 7 rainy days. The sun is out about 50% of daylight hours. The November record high is 28°C (1977) and the record low is 1°C (1970). November is one of the most comfortable months to visit.

Saijō weather in December

In December, Saijō averages a high of 13°C and a low of 4°C. It gets 60 mm of precipitation over about 8 rainy days. The sun is out about 48% of daylight hours. The December record high is 25°C (2018) and the record low is -3°C (1985).

Sunshine, humidity and wind in Saijō

November is the sunniest month in Saijō, with sunshine about 50% of daylight hours. June is the cloudiest, at 23%. Over the year the sun shines about 40% of daylight hours. Saijō is sunnier than 62% of Japan.

Humidity peaks in July at 81% and is lowest in December at 69%.

Saijō has about 32 days a year above 32°C. Saijō is hotter than 83% of Japan.

First and last freeze in Saijō

The first fall freeze in Saijō typically comes around December 22, and the last spring freeze around March 4. That leaves a frost-free growing season of about 293 days.

Saijō weather records

The hottest temperature on record at the Saijō station is 37°C, on August 7, 2018. The coldest is -6°C, on February 16, 1977.

The wettest day on record brought 245 mm of rain, on July 7, 2018.

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

The best time to visit Saijō

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

Winter (December–February) is chilly, with average highs around 11°C and lows near 3°C.

Spring (March–May) is mild, with average highs around 19°C and lows near 10°C.

Summer (June–August) is hot, with average highs around 30°C and lows near 22°C. It can feel humid.

Autumn (September–November) is warm, with average highs around 24°C and lows near 15°C.

Monthly climate

MonthPrecipRain daysHumiditySunshineSea tempRecord highRecord low
January46 mm770%45%-11°21°-3°
February61 mm870%44%-12°24°-6°
March98 mm1072%42%-12°28°-3°
April99 mm970%40%-11°34°-2°
May119 mm874%34%-9°33°
June204 mm1180%23%-7°36°10°
July216 mm1081%28%-4°37°16°
August99 mm878%40%-3°37°18°
September133 mm978%34%-3°36°11°
October107 mm773%48%-4°33°
November68 mm773%50%-7°28°
December60 mm869%48%-9°25°-3°

From ERA5 reanalysis. Sunshine is estimated from cloud cover.

Saijō climate questions

How much rain does Saijō get?

Saijō gets 1309 mm of precipitation in an average year, over about 102 rainy days.

What is the wettest month in Saijō?

July is the wettest month in Saijō, with 216 mm. January is the driest, with 46 mm.

How many rainy days does Saijō have a year?

Saijō has about 102 days with measurable rain in an average year. June has the most, about 11.

What is the hottest month in Saijō?

August is the warmest month in Saijō, with an average high of 32°C.

What is the coldest month in Saijō?

January is the coldest month in Saijō, with an average low of 2°C.

What is the record high temperature in Saijō?

The record high at the Saijō station is 37°C, set on August 7, 2018. The record low is -6°C, on February 16, 1977.

What is the sunniest month in Saijō?

November is the sunniest month in Saijō, with sunshine about 50% of daylight hours. June is the cloudiest.

When is the first frost in Saijō?

The first fall freeze in Saijō typically comes around December 22. The last spring freeze is around March 4.

What is the best time to visit Saijō?

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

Source: NOAA GHCN-Daily station MATSUYAMA (38 km away).

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Normals from NOAA GHCN-Daily station MATSUYAMA.