Ishinomaki climate
Ishinomaki (Japan) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 12 °C54 °F, and about 1,316 mm52 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Ishinomaki climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 439 | −229 | 134 | 783.1 | 24 |
| Feb | 440 | −229 | 134 | 532.1 | 22 |
| Mar | 847 | 133 | 540 | 833.3 | 15 |
| Apr | 1457 | 541 | 1049 | 1014.0 | 1 |
| May | 1966 | 1151 | 1559 | 1014.0 | 0 |
| Jun | 2373 | 1560 | 1966 | 1164.6 | 0 |
| Jul | 2679 | 2067 | 2373 | 1766.9 | 0 |
| Aug | 2882 | 2170 | 2476 | 1395.5 | 0 |
| Sep | 2476 | 1864 | 2170 | 1405.5 | 0 |
| Oct | 1966 | 1253 | 1560 | 1515.9 | 0 |
| Nov | 1356 | 642 | 949 | 863.4 | 1 |
| Dec | 744 | 133 | 439 | 933.7 | 14 |
| Year | 2882 | −229 | 1254 | 1,31652 | 78 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 85% | 69% | 2.1 | 9:46 |
| Feb | 82% | 69% | 2.9 | 10:43 |
| Mar | 79% | 67% | 3.8 | 11:51 |
| Apr | 79% | 66% | 4.7 | 13:09 |
| May | 81% | 70% | 5.1 | 14:15 |
| Jun | 83% | 76% | 5.0 | 14:50 |
| Jul | 85% | 80% | 4.5 | 14:35 |
| Aug | 84% | 73% | 4.4 | 13:39 |
| Sep | 83% | 72% | 3.7 | 12:23 |
| Oct | 81% | 67% | 3.0 | 11:07 |
| Nov | 83% | 63% | 2.3 | 10:02 |
| Dec | 85% | 68% | 1.9 | 9:30 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Ishinomaki is like
The warmest month is August, with an average high of 28 °C82 °F and a low of 21 °C70 °F. The coldest is January, when highs average 4 °C39 °F and lows −2 °C29 °F. Seasons are strongly marked: the warmest month is on average 23.5 °C42.3 °F warmer than the coldest.
It is wet, with about 1,316 mm52 in of precipitation per year. The wettest three-month stretch is July–September, which brings 35% of the annual total. The wettest month is July (176 mm6.9 in), the driest is February (53 mm2.1 in).
Relative humidity ranges from 79% in April to 85% in July. The clearest skies (lowest average cloud amount, 63%) are typical of November. Average wind speed near the ground ranges from 9 km/h (6 mph) in July to 16 km/h (10 mph) in January. Daylight lasts from about 9.5 hours in December to 14.8 hours in June.
A lasting snow cover is typical in December–March, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 17 cm).
Best time to visit Ishinomaki
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May and June: average highs of 19 °C66 °F to 23 °C73 °F with 101 mm4.0 in to 116 mm4.6 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 4 °C39 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Ishinomaki
- Winter (December–February) — highs 439 to 7 °C44 °F, lows −229 to 1 °C33 °F, about 74 mm2.9 in of precipitation a month. Pack a warm coat, layers and closed shoes and shoes with good grip, as frost is common.
- Spring (March–May) — highs 847 to 19 °C66 °F, lows 133 to 11 °C51 °F, about 95 mm3.7 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
- Summer (June–August) — highs 2373 to 28 °C82 °F, lows 1560 to 21 °C70 °F, about 144 mm5.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Autumn (September–November) — highs 1356 to 24 °C76 °F, lows 642 to 18 °C64 °F, about 126 mm4.9 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Ishinomaki compares
Compared with Sendai, about 41 km to the southwest, Ishinomaki is on average 0.6 °C1.1 °F warmer and receives 15% less precipitation (1,316 mm52 in vs 1,547 mm61 in). The difference is largest in February (2 °C3.6 °F warmer).
Of the 111 places in Japan covered by World Climates, Ishinomaki is the 90th warmest by annual mean temperature and the 101st wettest by annual precipitation. See all of them on the Japan climate page.
Places in other countries with the most similar temperature and rainfall pattern: New York City (United States, Cfa), Brooklyn (United States, Cfa) and Bridgeport (United States, Cfa).
Nearby places
- Ōsaki 34 km · 12 °C54 °F · 1,316 mm52 in
- Sendai 41 km · 12 °C53 °F · 1,547 mm61 in
- Ichinoseki 57 km · 11 °C52 °F · 1,411 mm56 in
- Oshu 81 km · 11 °C52 °F · 1,411 mm56 in
- Yamagata 84 km · 10 °C51 °F · 1,363 mm54 in
- Fukushima 104 km · 12 °C54 °F · 1,363 mm54 in
- Tsuruoka 133 km · 12 °C54 °F · 1,581 mm62 in
- Sakata 137 km · 12 °C54 °F · 1,767 mm70 in
Frequently asked questions
What is the warmest month in Ishinomaki?
August is the warmest month in Ishinomaki, with an average high of 28 °C (82 °F) and an average low of 21 °C (70 °F).
What is the coldest month in Ishinomaki?
January is the coldest month, with an average high of 4 °C (39 °F) and an average low of -2 °C (29 °F).
When does it rain the most in Ishinomaki?
July is the wettest month with about 176 mm (6.9 in) of precipitation; February is the driest with about 53 mm (2.1 in).
What is the best time to visit Ishinomaki?
Judging by long-term averages, the most comfortable months are May and June.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.