Nagasaki Weather in December

December in Nagasaki brings moderate temperatures around 14°C (57°F) during the day, dropping to 9°C (48°F) at night, with quite a bit of rainfall expected, averaging around 101 mm (4 in) for the month.

Rainfall in Nagasaki in December

Past climate data indicates that roughly 20 days will see rain, totalling around 101 mm (4 in) for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.

Temperature in Nagasaki in December

December in Nagasaki sees highs of 14°C (57°F) and lows of 9°C (48°F) overnight. During December, the winter season is in full swing. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Nagasaki in December

You can expect a moderate amount of sunlight, with approximately 114 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Nagasaki in December

Wind speeds average 2 m/s (4 knots) during December. 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 December

At 18°C (64°F), the water is getting there, comfortable enough for most swimmers, though those used to warmer seas may still find it a touch cool.

If you prefer enjoying temperate temperatures and rain-free days, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.