Best time to visit Kiryu
Month-by-month weather averages for Kiryu.
Kiryu, Gunma, Japan
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 5.4 °C / 42 °F | -2 °C / 28 °F | 43 mm / 1.7 in | neither best nor good |
| February | 6.4 °C / 44 °F | -1.6 °C / 29 °F | 57 mm / 2.2 in | neither best nor good |
| March | 10.6 °C / 51 °F | 1.5 °C / 35 °F | 103 mm / 4.1 in | neither best nor good |
| April | 15.6 °C / 60 °F | 6.2 °C / 43 °F | 127 mm / 5 in | good month |
| May | 20.7 °C / 69 °F | 11.6 °C / 53 °F | 139 mm / 5.5 in | good month |
| June | 23.4 °C / 74 °F | 16.2 °C / 61 °F | 169 mm / 6.7 in | good month |
| July | 27.2 °C / 81 °F | 20.5 °C / 69 °F | 216 mm / 8.5 in | neither best nor good |
| August | 28.5 °C / 83 °F | 21.5 °C / 71 °F | 171 mm / 6.7 in | neither best nor good |
| September | 24.5 °C / 76 °F | 17.9 °C / 64 °F | 194 mm / 7.6 in | neither best nor good |
| October | 18.7 °C / 66 °F | 11.4 °C / 53 °F | 166 mm / 6.6 in | good month |
| November | 13.4 °C / 56 °F | 5 °C / 41 °F | 67 mm / 2.6 in | good month |
| December | 7.9 °C / 46 °F | 0.2 °C / 32 °F | 52 mm / 2.1 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: good
- MMay: good
- JJune: good
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: good
- NNovember: good
- DDecember: neither
- Good
- April–June, October–November
Why these months
April · good
In its favour: share of daylight that is sunny 71%, feels like (high) 13.8 °C / 57 °F, average daily high 15.6 °C / 60 °F, precipitation 127 mm / 5 in, relative humidity 64%, days with heavy rain 4.2 days, average daily low 6.2 °C / 43 °F.
Against: wet days 12.9 days.
May · good
In its favour: feels like (high) 20.4 °C / 69 °F, average daily high 20.7 °C / 69 °F, share of daylight that is sunny 67%, average daily low 11.6 °C / 53 °F, relative humidity 67%, days with heavy rain 4.5 days.
Against: precipitation 139 mm / 5.5 in, wet days 13.8 days.
June · good
In its favour: feels like (high) 25 °C / 77 °F, average daily high 23.4 °C / 74 °F, share of daylight that is sunny 60%, average daily low 16.2 °C / 61 °F, relative humidity 76%.
Against: precipitation 169 mm / 6.7 in, wet days 18 days, days with heavy rain 5.7 days.
October · good
In its favour: feels like (high) 18.3 °C / 65 °F, average daily high 18.7 °C / 66 °F, share of daylight that is sunny 68%, average daily low 11.4 °C / 53 °F, days with heavy rain 4.1 days, relative humidity 75%.
Against: precipitation 166 mm / 6.6 in, wet days 13.7 days.
November · good
In its favour: share of daylight that is sunny 75%, precipitation 67 mm / 2.6 in, wet days 7.3 days, days with heavy rain 2.4 days, average daily high 13.4 °C / 56 °F, relative humidity 70%, average daily low 5 °C / 41 °F.
Against: feels like (high) 11.1 °C / 52 °F.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: good
- AApril: good
- MMay: good
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: good
- NNovember: best
- DDecember: good
- Best
- November
- Good
- March–May, October, December
Why these months
March · good
In its favour: average daily high 10.6 °C / 51 °F, precipitation 103 mm / 4.1 in, share of daylight that is sunny 76%, daylight per day 12 h, days with heavy rain 3.2 days, average daily low 1.5 °C / 35 °F, feels like (high) 7.4 °C / 45 °F, wet days 12.6 days, wind (daily max) 14 km/h / 9 mph.
April · good
In its favour: average daily high 15.6 °C / 60 °F, feels like (high) 13.8 °C / 57 °F, average daily low 6.2 °C / 43 °F, share of daylight that is sunny 71%, daylight per day 13.1 h, precipitation 127 mm / 5 in, wind (daily max) 12 km/h / 8 mph.
Against: wet days 12.9 days, days with heavy rain 4.2 days.
May · good
In its favour: average daily high 20.7 °C / 69 °F, feels like (high) 20.4 °C / 69 °F, average daily low 11.6 °C / 53 °F, share of daylight that is sunny 67%, daylight per day 14.1 h, wind (daily max) 11 km/h / 7 mph.
Against: precipitation 139 mm / 5.5 in, wet days 13.8 days, days with heavy rain 4.5 days.
October · good
In its favour: average daily high 18.7 °C / 66 °F, feels like (high) 18.3 °C / 65 °F, average daily low 11.4 °C / 53 °F, share of daylight that is sunny 68%, daylight per day 11.3 h, wind (daily max) 9 km/h / 6 mph.
Against: precipitation 166 mm / 6.6 in, wet days 13.7 days, days with heavy rain 4.1 days.
November · best
In its favour: average daily high 13.4 °C / 56 °F, precipitation 67 mm / 2.6 in, wet days 7.3 days, days with heavy rain 2.4 days, feels like (high) 11.1 °C / 52 °F, average daily low 5 °C / 41 °F, share of daylight that is sunny 75%, wind (daily max) 10 km/h / 6 mph, daylight per day 10.3 h.
December · good
In its favour: precipitation 52 mm / 2.1 in, wet days 7.2 days, days with heavy rain 1.1 days, average daily high 7.9 °C / 46 °F, share of daylight that is sunny 81%, wind (daily max) 12 km/h / 8 mph, average daily low 0.2 °C / 32 °F.
Against: feels like (high) 4.4 °C / 40 °F, daylight per day 9.7 h.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is オグナほたかスキー場, Oguna Hotaka Ski Area, 44 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 1.1 °C | 2.4 °C | 7.4 °C | 13.8 °C | 20.4 °C | 25 °C | 31 °C | 32.7 °C | 26.8 °C | 18.3 °C | 11.1 °C | 4.4 °C |
| Days with heavy rain | 1.1 days | 1.6 days | 3.2 days | 4.2 days | 4.5 days | 5.7 days | 7.3 days | 4.9 days | 5.7 days | 4.1 days | 2.4 days | 1.1 days |
| Time rain usually falls | 3 pm | 3 pm | 9 pm | 3 pm | 3 pm | 3 pm | 3 pm | 3 pm | 11 am | 10 pm | 12 am | 3 am |
| Sunshine per day | 8.7 h | 8.7 h | 9 h | 9.4 h | 9.4 h | 8.7 h | 8.5 h | 9.6 h | 8 h | 7.6 h | 7.7 h | 7.9 h |
| Relative humidity | 60% | 60% | 61% | 64% | 67% | 76% | 79% | 79% | 79% | 75% | 70% | 65% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 8.2 µg/m³ | 9.9 µg/m³ | 15.6 µg/m³ | 19.6 µg/m³ | 19.1 µg/m³ | 23.5 µg/m³ | 23.3 µg/m³ | 18.4 µg/m³ | 15.8 µg/m³ | 12.4 µg/m³ | 11.4 µg/m³ | 8.6 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 15.9 µg/m³ | 18.7 µg/m³ | 27.5 µg/m³ | 32 µg/m³ | 30.7 µg/m³ | 38.7 µg/m³ | 37.7 µg/m³ | 29.5 µg/m³ | 27 µg/m³ | 21.3 µg/m³ | 21.2 µg/m³ | 16.8 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.