Japan
Nagano in October: weather & travel advice
This month's data profile
Rain shapes the decision
Nagano in October is climatically mixed. The average daily high is around 17 °C. With about 15 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
53/100 · #6
Warmth
#6
Dryness
#4
Sun
#8
Published best categories: City break, Active
Nagano · OctoberPhoto: Sl-Ziga · CC BY-SA 3.0Climate facts
- Average high
- 17 °C
- Average low
- 7 °C
- Rainy days (est.)
- 15 rainy days (est.)
- Sun (est.)
- 4 h/day
- Humidity
- 84 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| September | 23 | 14 | 16 | 177 | 4.7 | 83 | 1.3 | 65 |
| October (selected) | 17 | 7 | 15 | 143 | 4.0 | 84 | 1.5 | 53 |
| November | 11 | 1 | 15 | 96 | 3.2 | 85 | 1.7 | 33 |
How do the previous and next months compare?
Baseline: October (53/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| September | +12 | +6.3 °C | +6.9 °C | +1.7 | +33.6 mm | +0.7 h | -1.2 % | -0.1 m/s |
| November | -20 | -6.3 °C | -6.3 °C | +0.4 | -47.4 mm | -0.8 h | +0.9 % | +0.3 m/s |
All twelve months in context

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Useful next decisions
Frequently asked questions
How warm is Nagano in October?
The average daily high is around 17 °C, with an average daily low of about 7 °C.
Does it rain a lot in Nagano in October?
The curated estimate is about 15 rainy days per month, not a directly measured long-term average. Total precipitation averages around 143 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Nagano?
By the climate score, May, June and September are the strongest months for Nagano. October is not among them.