Hyperlocal rainfall totals + real-time NOAA forecasts
Accurate weather without the clutter
Saijō, Ehime Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Saijō, Ehime?
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).
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.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 3° | 11° |
| Spring | Mar–May | 9° | 19° |
| Summer | Jun–Aug | 22° | 30° |
| Autumn | Sep–Nov | 14° | 23° |
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 28 days, to August 2, 2026.
From October 2025 to September 2026 Saijō got 2441 mm of rain, against a normal of 1309 mm for those months. September 2026 had the most, with 1226 mm.
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. Estimated sunshine is 45% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 23% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 28% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 50% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. 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 estimated sunshine of 50% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 23%. The annual cloud-cover estimate is 40% of daylight hours; it is not a measurement of sunshine duration. 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 85% 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
These records cover MATSUYAMA during 1970–2026. Earlier records or other stations in the city may differ.
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 in the available station history brought 322 mm of precipitation, on September 3, 2026.
45 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
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 2° | 10° | 46 mm | 7 | 70% | 45% | 21° | -3° |
| February | 2° | 11° | 61 mm | 8 | 70% | 44% | 24° | -6° |
| March | 5° | 14° | 98 mm | 10 | 72% | 42% | 28° | -3° |
| April | 9° | 19° | 99 mm | 9 | 70% | 40% | 34° | -2° |
| May | 14° | 24° | 119 mm | 8 | 74% | 34% | 33° | 6° |
| June | 19° | 27° | 204 mm | 11 | 80% | 23% | 36° | 10° |
| July | 23° | 31° | 216 mm | 10 | 81% | 28% | 37° | 16° |
| August | 24° | 32° | 99 mm | 8 | 78% | 40% | 37° | 18° |
| September | 21° | 29° | 133 mm | 9 | 78% | 34% | 36° | 11° |
| October | 14° | 24° | 107 mm | 7 | 73% | 48% | 33° | 4° |
| November | 9° | 18° | 68 mm | 7 | 73% | 50% | 28° | 1° |
| December | 4° | 13° | 60 mm | 8 | 69% | 48% | 25° | -3° |
Station: MATSUYAMA, 38 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
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?
Within the available 1970–2026 station history, 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 estimated sunshine of 50% of daylight hours from ERA5 cloud cover. 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.