Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average UV index in January
Weather in January
Temperature
January stands out as Nagasaki's coldest month, with temperatures ranging between an average high of 10.4°C (50.7°F) and a low of 3.8°C (38.8°F).Humidity
In Nagasaki, the average relative humidity in January is 66%.Rainfall
In Nagasaki, during January, the rain falls for 11.1 days and regularly aggregates up to 64mm (2.52") of precipitation. In Nagasaki, during the entire year, the rain falls for 124.7 days and collects up to 1858mm (73.15") of precipitation.Snowfall
Months with snowfall are January, February and December. The month with the most snowfall is January, when snow falls for 1.2 days and typically aggregates up to 20mm (0.79") of snow.Sea temperature
In Nagasaki, the average seawater temperature in January is 16.6°C (61.9°F).Note: Swimming in 16.6°C (61.9°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
Daylight
In January, the average length of the day in Nagasaki is 10h and 16min.On the first day of January in Nagasaki, sunrise is at 07:22 and sunset at 17:24. On the last day of the month, sunrise is at 07:16 and sunset at 17:51 JST.
Sunshine
With an average of 3.3h of sunshine, January has the least sunshine of the year in Nagasaki.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index in Nagasaki. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In January, the average maximum UV index of 3 translates into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Nagasaki?
What are the temperatures in Nagasaki in January?
What is the average humidity in January in Nagasaki?
How many days does it rain in January in Nagasaki?
What is the snowiest month in Nagasaki?
How much does it snow in Nagasaki in January?
What is the sea temperature in January in Nagasaki?
What is the average length of the day in January in Nagasaki?
What time are sunrise and sunset in January in Nagasaki?
What is the month with the least sunshine in Nagasaki?
How long on average sun shines in January in Nagasaki?
What are the months with the lowest UV index in Nagasaki?
How high is the UV index in January in Nagasaki?
Average temperature in January
Nagasaki, Japan
- Average high temperature in January: 10.4°C
The warmest month (with the highest average high temperature) is August (31.7°C).
The month with the lowest average high temperature is January (10.4°C).
- Average low temperature in January: 3.8°C
The month with the highest average low temperature is August (25.1°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average humidity in January
Nagasaki, Japan
- Average humidity in January: 66%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is February (64%).
Average rainfall in January
Nagasaki, Japan
- Average rainfall in January: 64mm
The wettest month (with the highest rainfall) is June (314.6mm).
The driest month (with the least rainfall) is December (60.8mm).
Average rainfall days in January
Nagasaki, Japan
- Average rainfall days in January: 11.1 days
The month with the highest number of rainy days is June (13.5 days).
The month with the least rainy days is October (6.2 days).
Average snowfall in January
Nagasaki, Japan
- Average snowfall in January: 20mm
The month with the highest snowfall is January (20mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Nagasaki, Japan
- Average snowfall days in January: 1.2 days
The month with the highest number of snowfall days is January (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in January
Nagasaki, Japan
- Average sea temperature in January: 16.6°C
The best month for swimming (with the highest average sea temperature) is August (27.7°C).
The coldest months (with the lowest average sea temperature) are February and March (15.3°C).
Average daylight in January /
Average sunshine in January
Nagasaki, Japan
- Average daylight in January: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 3h and 2min
The month with the most sunshine is August (Average sunshine: 6h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average UV index in January
Nagasaki, Japan
- Average UV index in January: 3
The months with the highest UV index are July and August (UV index 11).
The months with the lowest UV index are January and December (UV index 3).
Nagasaki, Japan
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