January weather forecast
Sasebo, Japan

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Weather in January

The start of the year in Sasebo, Japan, brings a chilly tone as the weather continues to feel the effects of winter. January experiences average low and high temperatures of 5.4°C (41.7°F) and 9.3°C (48.7°F) respectively. While frosty conditions are felt, the region also sees light snowfall during this month. Weather conditions are generally cloudy, contributing to the cooler weather. As the month comes to an end, the low temperatures gradually rise, signalling the slow but steady approach of spring.

Temperature

Sasebo's January weather, marked by an average high temperature of 9.3°C (48.7°F) and an average low temperature of 5.4°C (41.7°F), is the coldest in the year.

Humidity

The average relative humidity in January is 72%.

Rainfall

January is the month with the least rainfall in Sasebo. Rain falls for 14.5 days and accumulates 38mm (1.5") of precipitation.

Snowfall

Months with snowfall are January, February and December. January is the month with the most snowfall in Sasebo. Snow falls for 2.6 days and accumulates 6mm (0.24") of snow.

Sea temperature

In January, the average sea temperature in Sasebo, Japan, is 16.3°C (61.3°F).
Note: Swimming becomes less enjoyable for most at a surface water temperature of 16.3°C (61.3°F). As the temperature decreases below 21°C (69.8°F), breathing becomes increasingly difficult.

Daylight

In January, the average length of the day in Sasebo is 10h and 14min.
On the first day of January in Sasebo, sunrise is at 07:24 and sunset at 17:24. On the last day of the month, sunrise is at 07:17 and sunset at 17:51 JST.

Sunshine

January and December, with an average of 4.5h of sunshine, are months with the least sunshine.

UV index

In January, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In January, the maximum UV index of 3 suggests these recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What are the coldest months in Sasebo?

Sasebo's January weather, with an average high temperature of 9.3°C (48.7°F) and an average low temperature of 5.4°C (41.7°F), tends to be the coldest of the year.

What is the usual temperature for Sasebo in January?

In Sasebo, 9.3°C (48.7°F) is the average high-temperature and 5.4°C (41.7°F) is the average low-temperature during January.

What is the average humidity in January in Sasebo?

In Sasebo, the average relative humidity in January is 72%.

What is the driest month in Sasebo?

January is the month with the least rainfall in Sasebo, Japan. Rain falls for 14.5 days and accumulates 38mm (1.5") of precipitation.

How much does it rain in Sasebo in January?

In Sasebo, during January, the rain falls for 14.5 days and regularly aggregates up to 38mm (1.5") of precipitation.

When does it snow the most in Sasebo?

January is the month with the most snowfall in Sasebo. Snow falls for 2.6 days and accumulates 6mm (0.24") of snow.

How much does it snow in Sasebo in January?

In January, in Sasebo, it is snowing for 2.6 days. Throughout January, 6mm (0.24") of snow is accumulated.

How cold is the water in January in Sasebo?

In January, the average sea temperature is 16.3°C (61.3°F). For most, swimming in 16.3°C (61.3°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

How many hours of daylight does Sasebo have in January?

In January, the average day length in Sasebo is 10h and 14min.

What time are sunrise and sunset in January in Sasebo?

On the first day of January in Sasebo, Japan, sunrise is at 07:24 and sunset at 17:24. On the last day of the month, sunrise is at 07:17 and sunset at 17:51 JST.

What is the month with the least sunshine in Sasebo?

The months with the least sunshine in Sasebo, Japan, are January and December, with an average of 4.5h of sunshine.

How many hours of sunshine does Sasebo have in January?

In January, the average sunshine duration in Sasebo, Japan, is 4.5h.

How high is the UV index in January in Sasebo?

In Sasebo, the average daily maximum UV index in January is 3. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
11.5°C 52.7°F
9.3°C 48.7°F
10.6°C 51.1°F
Average low temperature
7.5°C 45.5°F
5.4°C 41.7°F
6.2°C 43.2°F
Average pressure
1021.7mbar 30.17inHg
1022.2mbar 30.19inHg
1021.1mbar 30.15inHg
Average wind speed
16.7km/h 10.4mph
16.7km/h 10.4mph
16.5km/h 10.3mph
Average max. wind speed
17.7km/h 11mph
17.7km/h 11mph
17.5km/h 10.9mph
Average wind speed gusts
23.2km/h 14.4mph
23.1km/h 14.4mph
23.1km/h 14.4mph
Average humidity
73%
72%
72%
Average rainfall
53mm 2.09"
38mm 1.5"
45mm 1.77"
Average rainfall days
16.4
14.5
12.5
Average snowfall
4mm 0.16"
6mm 0.24"
4mm 0.16"
Average snowfall days
1
2.6
1.4
Average sea temperature
18.4°C 65.1°F
16.3°C 61.3°F
14.9°C 58.8°F
Average daylight
10h 0min
10h 1min
11h 0min
Average sunshine
4h 3min
4h 3min
5h 4min
Average sunshine days
9.5
12.1
11.5
Average UV index
2
3
3
Average cloud cover
51%
51%
48%
Average visibility
10km 6.2mi
10km 6.2mi
10km 6.2mi

Average temperature in January
Sasebo, Japan

Average temperature in January - Sasebo, Japan
  • Average high temperature in January: 9.3°C

The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (9.3°C).

  • Average low temperature in January: 5.4°C

The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (5.4°C).

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Average pressure in January
Sasebo, Japan

Average pressure in January - Sasebo, Japan
  • Average pressure in January: 1022.2mbar

The month with the highest atmospheric pressure is January (1022.2mbar).
The month with the lowest atmospheric pressure is June (1008mbar).

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Average wind speed in January
Sasebo, Japan

Average wind speed in January - Sasebo, Japan
  • Average wind speed in January: 16.7km/h

The windiest months (with the highest average wind speed) are January and December (16.7km/h).
The calmest month (with the lowest average wind speed) is June (10.6km/h).

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Average humidity in January
Sasebo, Japan

Average humidity in January - Sasebo, Japan
  • Average humidity in January: 72%

The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is March (71%).

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Average rainfall in January
Sasebo, Japan

Average rainfall in January - Sasebo, Japan
  • Average rainfall in January: 38mm

The wettest month (with the highest rainfall) is July (192mm).
The driest month (with the least rainfall) is January (38mm).

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Average rainfall days in January
Sasebo, Japan

Average rainfall days in January - Sasebo, Japan
  • Average rainfall days in January: 14.5 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is May (9.5 days).

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Average snowfall in January
Sasebo, Japan

Average snowfall in January - Sasebo, Japan
  • Average snowfall in January: 6mm

The month with the highest snowfall is January (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in January
Sasebo, Japan

Average snowfall days in January - Sasebo, Japan
  • Average snowfall days in January: 2.6 days

The month with the highest number of snowfall days is January (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in January
Sasebo, Japan

Average sea temperature in January - Sasebo, Japan
  • Average sea temperature in January: 16.3°C

The best month for swimming (with the highest average sea temperature) is August (27.7°C).
The coldest month (with the lowest average sea temperature) is March (14.7°C).

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Average daylight in January /
Average sunshine in January
Sasebo, Japan

Average daylight in January / Average sunshine in January - Sasebo, Japan
  • Average daylight in January: 10h and 1min

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: 4h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).

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Average sunshine days in January
Sasebo, Japan

Average sunshine days in January - Sasebo, Japan
  • Average sunshine days in January: 12.1 days

The month with the most sunshine days is May (20.2 days).
The months with the least sunshine days are July and December (9.5 days).

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Average UV index in January
Sasebo, Japan

Average UV index in January - Sasebo, Japan
  • Average UV index in January: 3

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in January
Sasebo, Japan

Average cloud cover in January - Sasebo, Japan
  • Average cloud cover in January: 51

The months with the most cloud cover are January and December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 33).

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Average visibility in January
Sasebo, Japan

Average visibility in January - Sasebo, Japan
  • Average visibility in January: 10km

The months with the highest visibility are January, February, March, April, September, October, November and December (10km).
The months with the lowest visibility are May, June, July and August (9km).

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Sasebo, Japan

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