AI-generatedNagano at a glance
- Best time
- May – Jun, Oct
- Warmest month
- Aug · 29°
- Sunshine a year
- 1,960 h
- Rain a year
- 2,262 mm
- Climate
- Continental
- Time zone
- UTC+9
- Elevation
- 372 m
Climate in Nagano
Nagano has warm to hot summers and cold winters with occasional snow. August is the warmest month with average highs of 29 °C, while January is the coolest at 3 °C. With around 1,960 hours of sunshine a year, Nagano is moderately sunny; May is the sunniest month with 6.9 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Good
Best time to visit: May – June, October
October is the peak of the typhoon season
Keep in mindFrequent rainStorm season
A typical day in October
- Morning, 08:00: about 14°
- Midday, 13:00: about 19°
- Afternoon, 16:00: about 17°
- Evening, 20:00: about 14°
- Night, 23:00: about 12°
05:5317:12
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:37–06:28 · evening 16:38–17:28
- Blue hour
- Morning 05:27–05:37 · evening 17:28–17:38
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Nagano in October?
In October, Nagano is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. Expect around 5 hours of sunshine a day. It rains often – on about 17 days, adding up to 189 mm. All in all, October is a good month for a holiday in Nagano.
More details for October
- Daylight
- 11 h 19 min05:53 – 17:12
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 67 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %32 %
- Few rainy daysweight 30 %11 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Sunshine hours in Nagano
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.9 of 11.3 hours of daylight in Nagano, 43 % of the day.
Sunshine hours: measured at the weather station 2 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Nagano
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 11).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 35 min
- Light brown skin
- about 45 min
- Olive skin
- about 60 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Nagano: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Nagano has about 17 rainy days with 189 mm of rain in total.
Wind and clouds in Nagano
How breezy and how cloudy Nagano is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Nagano typically peaks at 11 km/h during the day: Beaufort 2, light air.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 67 % of the sky over Nagano: mostly cloudy, with about 4.9 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Nagano
How often the day gets hot in Nagano (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Nagano has about 0 hot days, with an average daytime high of 19 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Nagano
When Nagano is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Nagano.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Nagano
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- muggy month (10+ muggy days)
CoolOctober: nights around 10°. A duvet at night and a jumper for the evening.
The coolest nights are in January (−4°), the warmest in August (21°). Tropical nights of 20 °C and more are the rule from July to August; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in June and in September. Nights fall below 8 °C on average from November to April, so the room should be heated. It is muggy (dew point 18 °C or more) on about 65 days a year, mostly from July to August.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 4 | 3° | −4° | 4.1 h | 26 | 246 |
| FebruaryFeb | 7 | 4° | −4° | 5.0 h | 21 | 178 |
| MarchMar | 11 | 8° | −1° | 5.6 h | 20 | 162 |
| AprilApr | 56 | 16° | 4° | 6.6 h | 15 | 124 |
| MayMay | 72 | 21° | 10° | 6.9 h | 14 | 136 |
| JuneJun | 62 | 25° | 15° | 5.6 h | 16 | 165 |
| JulyJul | 54 | 28° | 20° | 5.4 h | 22 | 244 |
| AugustAug | 50 | 29° | 21° | 6.5 h | 21 | 208 |
| SeptemberSep | 58 | 25° | 17° | 5.0 h | 18 | 206 |
| OctoberOct | 60 | 19° | 10° | 4.9 h | 17 | 189 |
| NovemberNov | 30 | 13° | 4° | 4.7 h | 19 | 171 |
| DecemberDec | 4 | 6° | −1° | 4.2 h | 24 | 234 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
36.65° N, 138.18° E · 372 m · Asia/Tokyo
Best time to visit Nagano
The best time to visit Nagano is from May to June and in October. The wettest month is January with 246 mm of precipitation.
Nagano through the seasons
How the weather changes over the seasons, with averages for each.
Nagano in spring
Mar – May
Fair
- 8–21 °C by day
- 6 h of sun a day
- 49 rainy days in all
Nagano in summer
Jun – Aug
Fair
- 25–29 °C by day
- 6 h of sun a day
- 59 rainy days in all
Nagano in autumn
Sep – Nov
Fair
- 13–25 °C by day
- 5 h of sun a day
- 53 rainy days in all
Nagano in winter
Dec – Feb
Poor
- 3–6 °C by day
- 4 h of sun a day
- 70 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Nagano for you.
Your best months: May – June
Based on the climate averages; tap a month to see its details.
Compare two months in Nagano
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
May has the better holiday weather in Nagano: score 72 against 60. In May, days are 2 °C warmer than in October. May has 3 fewer rainy days. The sun shines 2 hours longer a day in May.
| Month | October | May |
|---|---|---|
| Weather score | 60 | 72better |
| Day high | 19° | 21° |
| Night low | 10° | 10° |
| Sunshine | 4.9 h | 6.9 hbetter |
| Rainy days | 17 | 14better |
| Rainfall | 189 mm | 136 mmbetter |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
All year
12 or more rainy days
Snow
Nov – Apr
Snow on 2 or more days
Nagano month by month
The typical weather for every month at a glance.
4January3° · 4 h
In January, Nagano is cold: daytime highs average 3 °C, and nights often drop below freezing (−4 °C). Expect around 4 hours of sunshine a day. Precipitation, often as snow, falls on about 26 days, totalling 246 mm. Snow falls on about 22 days. All in all, January is not an ideal month for a holiday in Nagano.
Nagano in January7February4° · 5 h
In February, Nagano is cold: daytime highs average 4 °C, and nights often drop below freezing (−4 °C). Expect around 5 hours of sunshine a day. It rains often – on about 21 days, adding up to 178 mm. Snow falls on about 17 days. All in all, February is not an ideal month for a holiday in Nagano.
Nagano in February11March8° · 6 h
In March, Nagano is cold: daytime highs average 8 °C, and nights often drop below freezing (−1 °C). Expect around 6 hours of sunshine a day. It rains often – on about 20 days, adding up to 162 mm. Snow falls on about 11 days. All in all, March is not an ideal month for a holiday in Nagano.
Nagano in March56April16° · 7 h
In April, Nagano is cool: daytime highs average 16 °C, and nights cool down to about 4 °C. The sun shines for around 7 hours a day. It rains often – on about 15 days, adding up to 124 mm. Snow falls on about 2 days. All in all, April is a so-so month for a holiday in Nagano.
Nagano in April72May21° · 7 h
In May, Nagano is warm: daytime highs average 21 °C, and nights cool down to about 10 °C. The sun shines for around 7 hours a day. It rains often – on about 14 days, adding up to 136 mm. All in all, May is a good month for a holiday in Nagano.
Nagano in May62June25° · 6 h
In June, Nagano is warm: daytime highs average 25 °C, and nights cool down to about 15 °C. Expect around 6 hours of sunshine a day. It rains often – on about 16 days, adding up to 165 mm. All in all, June is a good month for a holiday in Nagano.
Nagano in June54July28° · 5 h
In July, Nagano is hot: daytime highs average 28 °C, and nights cool down to about 20 °C. Expect around 5 hours of sunshine a day. It rains often – on about 22 days, adding up to 244 mm. On about 8 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Nagano.
Nagano in July50August29° · 7 h
In August, Nagano is hot: daytime highs average 29 °C, and even at night it stays warm at around 21 °C. The sun shines for around 7 hours a day. It rains often – on about 21 days, adding up to 208 mm. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a so-so month for a holiday in Nagano.
Nagano in August58September25° · 5 h
In September, Nagano is warm: daytime highs average 25 °C, and nights cool down to about 17 °C. Expect around 5 hours of sunshine a day. It rains often – on about 18 days, adding up to 206 mm. All in all, September is a so-so month for a holiday in Nagano.
Nagano in September60October19° · 5 h
In October, Nagano is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. Expect around 5 hours of sunshine a day. It rains often – on about 17 days, adding up to 189 mm. All in all, October is a good month for a holiday in Nagano.
Nagano in October30November13° · 5 h
In November, Nagano is cool: daytime highs average 13 °C, and nights cool down to about 4 °C. Expect around 5 hours of sunshine a day. It rains often – on about 19 days, adding up to 171 mm. Snow falls on about 3 days. All in all, November is not an ideal month for a holiday in Nagano.
Nagano in November4December6° · 4 h
In December, Nagano is cold: daytime highs average 6 °C, and nights often drop below freezing (−1 °C). Expect around 4 hours of sunshine a day. It rains often – on about 24 days, adding up to 234 mm. Snow falls on about 15 days. All in all, December is not an ideal month for a holiday in Nagano.
Nagano in DecemberNagano compared
Put Nagano side by side with another destination.
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Nagano vs. Matsumoto
In October the holiday weather in Nagano and Matsumoto is about equally good (score 60 vs. 62). During the day Matsumoto is 1 °C cooler than Nagano.
| in October | Nagano | Matsumoto |
|---|---|---|
| Holiday score | 60 | 62 |
| Daytime high | 19° | 18° |
| Sunshine | 5 h | 5 h |
| Rainy days | 17 | 14 |
| Best time | May – Jun, Oct | May, Sep – Oct |
Through the year
Japan in October: the best places
In October, Nagano ranks 28 among the 31 nearest destinations in this country.
- Hiroshima22°23°81
- 2Fukuoka22°23°81
- 3Nagasaki23°24°81
- 4Kumamoto23°23°80
- 5Kitakyūshū22°23°79
- 6Okayama22°24°78
- 7Kagoshima24°26°77
- 8Nagoya22°75
- 28NaganoThis page19°60
Planning a trip to Nagano
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Nagano in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Nagano has its best school-holiday weather during May half-term (score 70) and its weakest during the Christmas holidays (score 4).
- 42
Easter holidays
Mar – Apr
Fair
- 13 °C by day
- 6.3 h of sun a day
- 16 rainy days a month
Keep in mind: Frequent rain, Snow
- 70
May half-term
May – Jun
GoodBest holidays
- 22 °C by day
- 6.6 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain
- 51
Summer holidays
Jul – Aug
Fair
- 28 °C by day
- 6.1 h of sun a day
- 21 rainy days a month
Keep in mind: Frequent rain, Storm season
- 60
October half-term
Oct
Good
- 19 °C by day
- 4.9 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain, Storm season
- 4
Christmas holidays
Dec – Jan
Poor
- 5 °C by day
- 4.2 h of sun a day
- 25 rainy days a month
Keep in mind: Frequent rain, Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 50 min
- Distance
- 9,420 km
- Time zone
- UTC+9
- Jet lag
- About 8 days (8 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Nagano lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM); not a forecast.
Frequently asked questions about Nagano
When is the best time to visit Nagano?
The best time to visit Nagano is from May to June and in October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Nagano?
August is the warmest month, with average highs of 29 °C and nights around 21 °C. January is the coolest month at 3 °C.
When does it rain most in Nagano?
The wettest month is January with 246 mm of precipitation. The driest month is April with 124 mm.
How many hours of sunshine does Nagano get?
Nagano gets around 1,960 hours of sunshine a year. The sunniest month is May with 6.9 hours a day; in January there are 4.1 hours a day.
What time zone is Nagano in?
Nagano uses the time zone Asia/Tokyo, at UTC+9 all year.
How long is the flight from London to Nagano?
A nonstop flight from London to Nagano takes about 11 h 50 min, for a straight-line distance of about 9,420 km. Most routes need a change of planes, which adds time.
When is typhoon season in Nagano?
Nagano lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Nagano?
Nagano has its best school-holiday weather during May half-term (score 70) and its weakest during the Christmas holidays (score 4). Holiday ratings (0–100): Easter holidays 42, May half-term 70, Summer holidays 51, October half-term 60, Christmas holidays 4.
Near Nagano
Other destinations close by.
Places with a climate like Nagano
Destinations whose weather through the year is closest to Nagano's – good alternatives.