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Ikoma, Nara Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Ikoma, Nara?
Ikoma, Nara gets 1205 mm of precipitation a year over about 103 rainy days. August is the warmest month (average high 33°C) and January the coldest (average low -1°C).
Humid subtropical climate
Ikoma, Nara has hot summers and chilly winters. Daytime highs range from about 9°C in January to 33°C in August. June 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 | 0° | 10° |
| Spring | Mar–May | 7° | 19° |
| Summer | Jun–Aug | 21° | 31° |
| Autumn | Sep–Nov | 12° | 23° |
How much rain does Ikoma get?
Ikoma gets 1205 mm of precipitation in an average year, spread over about 103 days with measurable rain. That is fewer rainy days than 65% of Japan.
June is the wettest month, with 162 mm. January is the driest, with 47 mm. June has the most rainy days, about 11.
The longest dry spell in the last five years lasted 16 days, to January 10, 2022.
From October 2025 to September 2026 Ikoma got 3046 mm of rain, against a normal of 1205 mm for those months. August 2026 had the most, with 1397 mm.
Ikoma weather by month
Ikoma weather in January
In January, Ikoma averages a high of 9°C and a low of -1°C. It gets 47 mm of precipitation over about 7 rainy days. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. The January record high is 18°C (1997) and the record low is -6°C (1970).
Ikoma weather in February
In February, Ikoma averages a high of 10°C and a low of -1°C. It gets 60 mm of precipitation over about 8 rainy days. Estimated sunshine is 45% of daylight hours, derived from ERA5 cloud cover. The February record high is 24°C (2010) and the record low is -8°C (1977).
Ikoma weather in March
In March, Ikoma averages a high of 14°C and a low of 2°C. It gets 96 mm of precipitation over about 10 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The March record high is 27°C (2023) and the record low is -5°C (1977).
Ikoma weather in April
In April, Ikoma averages a high of 20°C and a low of 7°C. It gets 87 mm of precipitation over about 9 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The April record high is 30°C (2012) and the record low is -2°C (1972). April is one of the most comfortable months to visit.
Ikoma weather in May
In May, Ikoma averages a high of 25°C and a low of 12°C. It gets 121 mm of precipitation over about 9 rainy days. Estimated sunshine is 32% of daylight hours, derived from ERA5 cloud cover. The May record high is 33°C (2026) and the record low is 3°C (1980). May is one of the most comfortable months to visit.
Ikoma weather in June
In June, Ikoma averages a high of 27°C and a low of 18°C. It gets 162 mm of precipitation over about 11 rainy days. Estimated sunshine is 24% of daylight hours, derived from ERA5 cloud cover. The June record high is 37°C (2013) and the record low is 7°C (1981).
Ikoma weather in July
In July, Ikoma averages a high of 32°C and a low of 22°C. It gets 155 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 38°C (2018) and the record low is 14°C (1982).
Ikoma weather in August
In August, Ikoma averages a high of 33°C and a low of 23°C. It gets 105 mm of precipitation over about 7 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The August record high is 39°C (1994) and the record low is 15°C (1981).
Ikoma weather in September
In September, Ikoma averages a high of 29°C and a low of 19°C. It gets 141 mm of precipitation over about 10 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The September record high is 37°C (1986) and the record low is 9°C (1976).
Ikoma weather in October
In October, Ikoma averages a high of 23°C and a low of 12°C. It gets 119 mm of precipitation over about 8 rainy days. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. The October record high is 32°C (2019) and the record low is 2°C (1983). October is one of the most comfortable months to visit.
Ikoma weather in November
In November, Ikoma averages a high of 17°C and a low of 6°C. It gets 64 mm of precipitation over about 7 rainy days. Estimated sunshine is 55% of daylight hours, derived from ERA5 cloud cover. The November record high is 28°C (2023) and the record low is -2°C (1973). November is one of the most comfortable months to visit.
Ikoma weather in December
In December, Ikoma averages a high of 12°C and a low of 2°C. It gets 49 mm of precipitation over about 7 rainy days. Estimated sunshine is 57% of daylight hours, derived from ERA5 cloud cover. The December record high is 25°C (2018) and the record low is -5°C (1970).
Sunshine, humidity and wind in Ikoma
December is the sunniest month in Ikoma, with estimated sunshine of 57% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 24%. The annual cloud-cover estimate is 41% of daylight hours; it is not a measurement of sunshine duration. Ikoma is sunnier than 68% of Japan.
Humidity peaks in July at 75% and is lowest in April at 61%.
Ikoma has about 37 days a year above 32°C. Ikoma is hotter than 93% of Japan.
First and last freeze in Ikoma
The first fall freeze in Ikoma typically comes around December 7, and the last spring freeze around March 28. That leaves a frost-free growing season of about 254 days.
Ikoma weather records
These records cover NARA during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Ikoma station is 39°C, on August 8, 1994. The coldest is -8°C, on February 16, 1977.
The wettest day in the available station history brought 345 mm of precipitation, on July 12, 2026.
39 all-time records have been set at the station since 1970.
The best time to visit Ikoma
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 10°C and lows near 0°C.
Spring (March–May) is mild, with average highs around 20°C and lows near 7°C.
Summer (June–August) is hot, with average highs around 31°C and lows near 21°C. It can feel humid.
Autumn (September–November) is warm, with average highs around 23°C and lows near 12°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -1° | 9° | 47 mm | 7 | 68% | 48% | 18° | -6° |
| February | -1° | 10° | 60 mm | 8 | 64% | 45% | 24° | -8° |
| March | 2° | 14° | 96 mm | 10 | 62% | 40% | 27° | -5° |
| April | 7° | 20° | 87 mm | 9 | 61% | 38% | 30° | -2° |
| May | 12° | 25° | 121 mm | 9 | 65% | 32% | 33° | 3° |
| June | 18° | 27° | 162 mm | 11 | 71% | 24% | 37° | 7° |
| July | 22° | 32° | 155 mm | 10 | 75% | 28% | 38° | 14° |
| August | 23° | 33° | 105 mm | 7 | 68% | 38% | 39° | 15° |
| September | 19° | 29° | 141 mm | 10 | 68% | 36% | 37° | 9° |
| October | 12° | 23° | 119 mm | 8 | 68% | 48% | 32° | 2° |
| November | 6° | 17° | 64 mm | 7 | 69% | 55% | 28° | -2° |
| December | 2° | 12° | 49 mm | 7 | 66% | 57% | 25° | -5° |
Station: NARA, 12 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.
Ikoma climate questions
How much rain does Ikoma get?
Ikoma gets 1205 mm of precipitation in an average year, over about 103 rainy days.
What is the wettest month in Ikoma?
June is the wettest month in Ikoma, with 162 mm. January is the driest, with 47 mm.
How many rainy days does Ikoma have a year?
Ikoma has about 103 days with measurable rain in an average year. June has the most, about 11.
What is the hottest month in Ikoma?
August is the warmest month in Ikoma, with an average high of 33°C.
What is the coldest month in Ikoma?
January is the coldest month in Ikoma, with an average low of -1°C.
What is the record high temperature in Ikoma?
Within the available 1970–2026 station history, the record high at the Ikoma station is 39°C, set on August 8, 1994. The record low is -8°C, on February 16, 1977.
What is the sunniest month in Ikoma?
December is the sunniest month in Ikoma, with estimated sunshine of 57% of daylight hours from ERA5 cloud cover. June is the cloudiest.
When is the first frost in Ikoma?
The first fall freeze in Ikoma typically comes around December 7. The last spring freeze is around March 28.
What is the best time to visit Ikoma?
The most comfortable time to visit is typically April to May and October to November, when daytime highs sit near 21°C.