Nagasaki
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Nagasaki Weather in October

October in Nagasaki typically sees daytime highs of 23°C (73°F) and nighttime lows of 19°C (66°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Nagasaki in October

Historically, the month has about 13 days of rain, averaging 110 mm (4.3 in) in total. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Nagasaki in October

Expect highs of 23°C (73°F) in Nagasaki in October, with nights dropping to around 19°C (66°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Nagasaki in October

The area enjoys a moderate level of sunlight, with around 180 hours. It's a good balance between sunny and cloudy days.

Wind Speed in Nagasaki in October

Average wind conditions reach 1 m/s (2 knots) in October. This creates generally peaceful weather with subtle air movement. Remember this is an average: some days are windless while others have noticeable or very gentle breezes.

Average water temperature in October

The water is 22°C (72°F) this month, warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

If you're a fan of comfortable temperatures and drier conditions, October is a great time to visit.

Nagasaki Temperature in October

Min Temperature
19°C (66°F)
Max Temperature
23°C (73°F)
Water Temperature
22°C (72°F)
Chance of Rain
44%
Precipitation
110 mm (4.3 in)
Rainy days
13 days
Humidity
67%
Windspeed
1 m/s (2 knots)
Sunshine
180 hours
Percentage Sunshine
50%

Nagasaki Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Nagasaki - and find the best time to visit.

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Nagasaki typically drop from around 26°C (79°F) at the start of October to approximately 21°C (70°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 19°C (66°F).

Average temperatures in October

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in October

Historical weather records for Nagasaki in October

Browse day-by-day weather records for Nagasaki spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Nagasaki historical weather extremes in October

The extremes listed below come from historical weather data collected in Nagasaki from 1976 through 2025.

  • The hottest October day on record in Nagasaki reached 31°C (88°F) (October 10, 2021).
  • Nagasaki experienced its chilliest October day on October 31, 1997, reaching only 13°C (55°F).
  • Nighttime temperatures dropped to 6°C (43°F) on October 21, 1991, marking the coldest October night on record.

Best Places in Japan in October

Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in October →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Nagasaki in October

Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Expect water temperatures of around 22°C (72°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Nagasaki in October

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    7/10
  • Cycling
    9/10
  • Walking
    9/10
  • Camping
    6/10
  • Outdoor sports
    9/10

Nagasaki 3-Day Forecast

More climate data for Nagasaki

Popular in October

Where to go in October - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.