Utsunomiya climate
Utsunomiya (Japan) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 13 °C56 °F, and about 1,474 mm58 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Utsunomiya climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 642 | −326 | 134 | 532.1 | 28 |
| Feb | 745 | −327 | 236 | 451.8 | 24 |
| Mar | 1253 | 032 | 642 | 873.4 | 16 |
| Apr | 1864 | 541 | 1152 | 1174.6 | 2 |
| May | 2373 | 1151 | 1762 | 1345.3 | 0 |
| Jun | 2679 | 1660 | 2169 | 1576.2 | 0 |
| Jul | 2985 | 2068 | 2577 | 1927.6 | 0 |
| Aug | 3087 | 2170 | 2678 | 1676.6 | 0 |
| Sep | 2679 | 1763 | 2271 | 1967.7 | 0 |
| Oct | 2169 | 1151 | 1660 | 1927.5 | 0 |
| Nov | 1559 | 440 | 1049 | 793.1 | 2 |
| Dec | 948 | −130 | 439 | 562.2 | 20 |
| Year | 3087 | −326 | 1356 | 1,47458 | 93 |
“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 | 77% | 49% | 2.6 | 9:55 |
| Feb | 77% | 54% | 3.3 | 10:48 |
| Mar | 75% | 59% | 4.1 | 11:52 |
| Apr | 76% | 64% | 4.8 | 13:05 |
| May | 77% | 71% | 5.2 | 14:06 |
| Jun | 81% | 82% | 4.7 | 14:39 |
| Jul | 83% | 83% | 4.5 | 14:25 |
| Aug | 82% | 74% | 4.6 | 13:33 |
| Sep | 84% | 76% | 3.7 | 12:21 |
| Oct | 83% | 69% | 3.1 | 11:11 |
| Nov | 82% | 55% | 2.6 | 10:10 |
| Dec | 80% | 48% | 2.3 | 9:40 |
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 Utsunomiya is like
The warmest month is August, with an average high of 30 °C87 °F and a low of 21 °C70 °F. The coldest is January, when highs average 6 °C42 °F and lows −3 °C26 °F. Seasons are strongly marked: the warmest month is on average 24.5 °C44 °F warmer than the coldest.
It is wet, with about 1,474 mm58 in of precipitation per year. The wettest three-month stretch is July–September, which brings 38% of the annual total. The wettest month is September (196 mm7.7 in), the driest is February (45 mm1.8 in).
Relative humidity ranges from 75% in March to 84% in September. The clearest skies (lowest average cloud amount, 48%) are typical of December. Average wind speed near the ground ranges from 4 km/h (2 mph) in November to 6 km/h (4 mph) in April. Daylight lasts from about 9.7 hours in December to 14.6 hours in June.
A lasting snow cover is typical in January and February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 12 cm).
Best time to visit Utsunomiya
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May: average highs of 23 °C73 °F to 23 °C73 °F with 134 mm5.3 in to 134 mm5.3 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 6 °C42 °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 Utsunomiya
- Winter (December–February) — highs 642 to 9 °C48 °F, lows −326 to −1 °C30 °F, about 52 mm2.0 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 1253 to 23 °C73 °F, lows 032 to 11 °C51 °F, about 113 mm4.4 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Summer (June–August) — highs 2679 to 30 °C87 °F, lows 1660 to 21 °C70 °F, about 172 mm6.8 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 1559 to 26 °C79 °F, lows 440 to 17 °C63 °F, about 156 mm6.1 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Utsunomiya compares
Compared with Saitama, about 76 km to the south, Utsunomiya is on average 1.6 °C2.8 °F cooler and receives a similar amount of precipitation. The difference is largest in July (1.7 °C3 °F cooler).
Of the 111 places in Japan covered by World Climates, Utsunomiya is the 84th warmest by annual mean temperature and the 83rd 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: Gyeongju (South Korea, Cfa), Chinju (South Korea, Cwa) and Gangneung (South Korea, Cwa).
The same NASA POWER grid cell also contains Oyama (pop. 167,647), Tochigi (pop. 159,056) and Chikusei (pop. 100,753). Their long-term averages in this dataset are essentially the same as for Utsunomiya, so they do not have separate pages.
Nearby places
- Koga 45 km · 15 °C59 °F · 1,519 mm60 in
- Nasushiobara 48 km · 12 °C54 °F · 1,405 mm55 in
- Mito 56 km · 15 °C58 °F · 1,479 mm58 in
- Tsukuba 58 km · 15 °C59 °F · 1,519 mm60 in
- Kumagaya 65 km · 15 °C59 °F · 1,449 mm57 in
- Maebashi 74 km · 14 °C57 °F · 1,469 mm58 in
- Saitama 76 km · 15 °C59 °F · 1,449 mm57 in
- Abiko 79 km · 15 °C59 °F · 1,519 mm60 in
Frequently asked questions
What is the warmest month in Utsunomiya?
August is the warmest month in Utsunomiya, with an average high of 30 °C (87 °F) and an average low of 21 °C (70 °F).
What is the coldest month in Utsunomiya?
January is the coldest month, with an average high of 6 °C (42 °F) and an average low of -3 °C (26 °F).
When does it rain the most in Utsunomiya?
September is the wettest month with about 196 mm (7.7 in) of precipitation; February is the driest with about 45 mm (1.8 in).
What is the best time to visit Utsunomiya?
Judging by long-term averages, the most comfortable months are May.
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.