Nagasaki Weather in July

Nagasaki in July averages 28°C (82°F) during the day and 25°C (77°F) at night. July is part of the rainy season, so frequent rainfall is typical.

Rainfall in Nagasaki in July

Nagasaki is in the rainy season in July, with rain on around 19 days and an average of 330 mm (13 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.

Temperature in Nagasaki in July

Daytime highs in Nagasaki in July reach 28°C (82°F), with nights around 25°C (77°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding.

Sunshine in Nagasaki in July

You can expect a moderate amount of sunlight, with approximately 177 hours. Even though this month is part of the wet season, you can still see the sun occasionally.

Wind Speed in Nagasaki in July

Wind speeds average 2 m/s (4 knots) during July. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.

Average water temperature in July

At 26°C (79°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

If you're looking for dry conditions and comfortable temperatures, July may not be the ideal month to visit Nagasaki. Our weather planner can help you explore destinations with more pleasant weather conditions.

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For a detailed overview over the year and the best time to visit Japan, check out our Nagasaki's climate page.

Nagasaki Temperature in July

Min Temperature 25°C (77°F)  

Max Temperature 28°C (82°F)  

Water Temperature 26°C (79°F)  

Chance of Rain 65%  

Precipitation 330 mm (13 in)  

Rainy days 19 days  

Humidity 80%  

Windspeed 2 m/s (4 knots)  

Sunshine 177 hours  

Percentage Sunshine 42%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Nagasaki typically rise from around 28°C (82°F) at the start of July to approximately 32°C (90°F) by the end. Nights are warm, with lows typically ranging from 23°C (73°F) to 26°C (79°F).

Average temperatures in July

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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 July

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Historical weather for Nagasaki in July

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.

Historical weather Temperatures Precipitation

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Nagasaki historical weather extremes in July

Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Nagasaki.

• On July 23, 1994, temperatures climbed to 37°C (99°F), marking the warmest July day on record.
• The coldest July day was on July 2, 1989, with a maximum of 21°C (70°F).
• Nighttime temperatures dropped to 15°C (59°F) on July 1, 1982, marking the coldest July night on record.

What to Wear in Nagasaki in July

Warm but pleasant conditions in Nagasaki in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. With water temperatures around 26°C (79°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Nagasaki in July

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

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Japan, check out our Nagasaki's climate page.

More climate data for Nagasaki

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Nagasaki climate overview or explore weather in Japan.