Best time to visit Ashikaga
Month-by-month weather averages for Ashikaga.
Ashikaga, Tochigi, 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 | 8.5 °C / 47 °F | -0.2 °C / 32 °F | 44 mm / 1.7 in | neither best nor good |
| February | 9.5 °C / 49 °F | 0.5 °C / 33 °F | 60 mm / 2.4 in | neither best nor good |
| March | 13.6 °C / 56 °F | 3.7 °C / 39 °F | 108 mm / 4.2 in | neither best nor good |
| April | 18.3 °C / 65 °F | 8.5 °C / 47 °F | 131 mm / 5.2 in | good month |
| May | 23.2 °C / 74 °F | 14 °C / 57 °F | 155 mm / 6.1 in | good month |
| June | 25.8 °C / 78 °F | 18.5 °C / 65 °F | 178 mm / 7 in | neither best nor good |
| July | 29.5 °C / 85 °F | 22.8 °C / 73 °F | 220 mm / 8.7 in | neither best nor good |
| August | 31 °C / 88 °F | 24 °C / 75 °F | 159 mm / 6.3 in | neither best nor good |
| September | 27 °C / 81 °F | 20.3 °C / 69 °F | 210 mm / 8.3 in | neither best nor good |
| October | 21.2 °C / 70 °F | 13.9 °C / 57 °F | 195 mm / 7.7 in | good month |
| November | 16 °C / 61 °F | 7.2 °C / 45 °F | 85 mm / 3.3 in | good month |
| December | 10.8 °C / 51 °F | 1.8 °C / 35 °F | 60 mm / 2.4 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: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: good
- NNovember: good
- DDecember: neither
- Good
- April–May, October–November
Why these months
April · good
In its favour: feels like (high) 16.8 °C / 62 °F, average daily high 18.3 °C / 65 °F, share of daylight that is sunny 69%, relative humidity 66%, average daily low 8.5 °C / 47 °F, days with heavy rain 4 days.
Against: precipitation 131 mm / 5.2 in, wet days 12.6 days.
May · good
In its favour: feels like (high) 23.4 °C / 74 °F, average daily high 23.2 °C / 74 °F, share of daylight that is sunny 64%, average daily low 14 °C / 57 °F, relative humidity 69%.
Against: precipitation 155 mm / 6.1 in, wet days 13.3 days, days with heavy rain 5.2 days.
October · good
In its favour: feels like (high) 21.5 °C / 71 °F, average daily high 21.2 °C / 70 °F, share of daylight that is sunny 65%, average daily low 13.9 °C / 57 °F, relative humidity 75%.
Against: precipitation 195 mm / 7.7 in, wet days 13.9 days, days with heavy rain 4.7 days.
November · good
In its favour: share of daylight that is sunny 74%, feels like (high) 14.3 °C / 58 °F, precipitation 85 mm / 3.3 in, average daily high 16 °C / 61 °F, wet days 8.9 days, days with heavy rain 2.6 days, average daily low 7.2 °C / 45 °F, relative humidity 71%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: good
- FFebruary: best
- MMarch: best
- AApril: good
- MMay: neither
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: neither
- NNovember: best
- DDecember: best
- Best
- February–March, November–December
- Good
- January, April
Why these months
January · good
In its favour: precipitation 44 mm / 1.7 in, wet days 5.5 days, days with heavy rain 1.2 days, average daily high 8.5 °C / 47 °F, share of daylight that is sunny 86%, wind (daily max) 14 km/h / 9 mph, average daily low -0.2 °C / 32 °F, daylight per day 10 h.
Against: feels like (high) 4.4 °C / 40 °F.
February · best
In its favour: precipitation 60 mm / 2.4 in, average daily high 9.5 °C / 49 °F, wet days 7.2 days, days with heavy rain 1.8 days, share of daylight that is sunny 79%, daylight per day 10.9 h, wind (daily max) 16 km/h / 10 mph, average daily low 0.5 °C / 33 °F, feels like (high) 5.7 °C / 42 °F.
March · best
In its favour: average daily high 13.6 °C / 56 °F, precipitation 108 mm / 4.2 in, share of daylight that is sunny 74%, daylight per day 12 h, feels like (high) 10.7 °C / 51 °F, average daily low 3.7 °C / 39 °F, wet days 11.7 days, days with heavy rain 3.6 days, wind (daily max) 16 km/h / 10 mph.
April · good
In its favour: average daily high 18.3 °C / 65 °F, feels like (high) 16.8 °C / 62 °F, average daily low 8.5 °C / 47 °F, share of daylight that is sunny 69%, daylight per day 13.1 h, precipitation 131 mm / 5.2 in, days with heavy rain 4 days, wind (daily max) 15 km/h / 10 mph.
Against: wet days 12.6 days.
November · best
In its favour: average daily high 16 °C / 61 °F, precipitation 85 mm / 3.3 in, wet days 8.9 days, feels like (high) 14.3 °C / 58 °F, average daily low 7.2 °C / 45 °F, share of daylight that is sunny 74%, days with heavy rain 2.6 days, wind (daily max) 10 km/h / 6 mph, daylight per day 10.3 h.
December · best
In its favour: average daily high 10.8 °C / 51 °F, precipitation 60 mm / 2.4 in, wet days 7.2 days, days with heavy rain 1.8 days, share of daylight that is sunny 80%, average daily low 1.8 °C / 35 °F, feels like (high) 7.6 °C / 46 °F, wind (daily max) 13 km/h / 8 mph.
Against: 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 丸沼高原スキー場, Marunuma Kogen Ski Resort, 53 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) | 4.4 °C | 5.7 °C | 10.7 °C | 16.8 °C | 23.4 °C | 28.1 °C | 34.2 °C | 36.1 °C | 30 °C | 21.5 °C | 14.3 °C | 7.6 °C |
| Days with heavy rain | 1.2 days | 1.8 days | 3.6 days | 4 days | 5.2 days | 5.5 days | 7.5 days | 4.8 days | 6.6 days | 4.7 days | 2.6 days | 1.8 days |
| Time rain usually falls | 3 pm | 10 am | 9 pm | 3 pm | 3 pm | 3 pm | 3 pm | 3 pm | 3 pm | 5 am | 2 am | 8 am |
| Sunshine per day | 8.6 h | 8.6 h | 8.8 h | 9 h | 9 h | 8 h | 8.1 h | 9.4 h | 7.7 h | 7.3 h | 7.6 h | 7.8 h |
| Relative humidity | 60% | 60% | 63% | 66% | 69% | 77% | 80% | 78% | 78% | 75% | 71% | 66% |
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 | 6.9 µg/m³ | 8.5 µg/m³ | 15.2 µg/m³ | 17.7 µg/m³ | 17.3 µg/m³ | 21.9 µg/m³ | 23.6 µg/m³ | 16.1 µg/m³ | 13.7 µg/m³ | 10.4 µg/m³ | 9.6 µg/m³ | 6.9 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 14.2 µg/m³ | 16.6 µg/m³ | 27.5 µg/m³ | 30.1 µg/m³ | 28 µg/m³ | 35.5 µg/m³ | 37.4 µg/m³ | 25.3 µg/m³ | 23.2 µg/m³ | 18.4 µg/m³ | 18.7 µg/m³ | 15 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.