February weather forecast
Nagasaki, Japan

February sees a slight increase in temperatures from 10.4°C (50.7°F) to 11.7°C (53.1°F) in the high range, and from 3.8°C (38.8°F) to 4.4°C (39.9°F) in the low. Relative humidity rises slightly compared to January, creating a sense of dampness in the air. The city's climate shifts more visibly in terms of rainfall, with the average amount jumping from 64mm (2.52") to 86mm (3.39"). Towards the latter part of February, blossoms start to emerge, teasing the imminent arrival of spring. As February gives way to March, one can expect the weather to warm up further, setting the stage for the transition to spring.

Temperature

Shifting into February, Nagasaki records an average high-temperature of a still cool 11.7°C (53.1°F), presenting minor fluctuations compared to the previous month. During the month of February, Nagasaki anticipates a mean low-temperature of 4.4°C (39.9°F).

Humidity

February is the least humid month in Nagasaki, with an average relative humidity of 64%.

Rainfall

In February, in Nagasaki, the rain falls for 9.9 days. Throughout February, 86mm (3.39") of precipitation is accumulated. In Nagasaki, Japan, during the entire year, the rain falls for 124.7 days and collects up to 1858mm (73.15") of precipitation.

Snowfall

Months with snowfall in Nagasaki, Japan, are January, February and December. February is the last month it regularly snows. During 0.9 snowfall days, in February, Nagasaki aggregates 10mm (0.39") of snow. Throughout the year, there are 2.5 snowfall days, and 40mm (1.57") of snow is accumulated.

Sea temperature

February and March, with an average sea temperature of 15.3°C (59.5°F), are months with the coldest seawater.
Note: In 15.3°C (59.5°F), swimming is not an enjoyable activity for most. The challenge of managing one's breathing increases as the temperature goes under 21°C (69.8°F).

Daylight

The average length of the day in February is 11h and 1min.
On the first day of February, sunrise is at 07:15 and sunset at 17:52. On the last day of the month, sunrise is at 06:49 and sunset at 18:16 JST.

Sunshine

In February, the average sunshine in Nagasaki is 4.3h.

UV index

In Nagasaki, the average daily maximum UV index in February is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 5 in February transforms into this advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.