The highest day temperature in June 2026 was 81°F. The lowest night temperature was 66°F. The average values for day and night temperatures during June were 76.2°F и 71.7°F respectivly.

The average sea surface temperature in June 2026 for Nagasaki was 77.3°F. The maximum and minimum values were 73.6°F and 79.4°F respectively.

Most of the days in June are gloomy but you can also expect sunny days.

Precipitation total in June for Nagasaki is 12.8 in. It makes june the most rainy month of the year.

The average wind speed in June is 6.7 mph. It makes June the most windless month of the year for Nagasaki.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Nagasaki in June is 7.0 hours.