Nagasaki Weather in June

With daytime temperatures of 25°C (77°F) and nighttime lows of 21°C (70°F), June in Nagasaki brings high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.

Rainfall in Nagasaki in June

As part of the rainy season, Nagasaki sees around 19 days of rain in June, with an average of 451 mm (18 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.

Temperature in Nagasaki in June

In June, Nagasaki sees high temperatures, with highs of 25°C (77°F). Nights drop to around 21°C (70°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights remain mild at 21°C (70°F), making evenings a pleasant time to be outdoors.

Sunshine in Nagasaki in June

The area experiences a moderate amount of sunshine, with approximately 126 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.

Wind Speed in Nagasaki in June

Average wind conditions reach 2 m/s (4 knots) in June. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.

Average water temperature in June

The water sits at 21°C (70°F), which is a nice temperature for swimming. Not too cold, not too warm — most visitors are happy to spend time in the water.

June in Nagasaki has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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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 June

Min Temperature 21°C (70°F)  

Max Temperature 25°C (77°F)  

Water Temperature 21°C (70°F)  

Chance of Rain 64%  

Precipitation 451 mm (18 in)  

Rainy days 19 days  

Humidity 80%  

Windspeed 2 m/s (4 knots)  

Sunshine 126 hours  

Percentage Sunshine 34%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Nagasaki typically stay consistent throughout June, with daily highs averaging around 25°C (77°F). Nights are warm, with lows typically ranging from 18°C (64°F) to 23°C (73°F).

Average temperatures in June

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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 June

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Historical weather for Nagasaki in June

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 June

The extremes listed below come from historical weather data collected in Nagasaki from 1976 through 2026.

• The warmest day in June was on June 20, 2004, with a maximum of 36°C (97°F).
• On June 3, 2009, Nagasaki saw its coldest June day with temperatures maxing out at 19°C (66°F).
• The lowest overnight temperature recorded in June was 11°C (52°F) (June 3, 1981).

What to Wear in Nagasaki in June

Pleasant temperatures in June 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. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Expect water temperatures of around 21°C (70°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Nagasaki in June

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

Swimming

7/10

Camping

6/10

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.