January weather forecastHeda, Japan

January

Weather in January

January, the same as December, in Heda, Japan, is a frosty winter month, with an average temperature ranging between min 2°C (35.6°F) and max 8.2°C (46.8°F).

Temperature

The coldest period tends to be January, when average temperatures fluctuate between a high of 8.2°C (46.8°F) and a low of 2°C (35.6°F).

Humidity

January is the least humid month, with an average relative humidity of 67%.

Rainfall

January is the month with the least rainfall in Heda. Rain falls for 8.7 days and accumulates 50mm (1.97") of precipitation.

Snowfall

Months with snowfall in Heda are January, February and December. In Heda, in January, during 0.4 snowfall days, 1mm (0.04") of snow is typically accumulated. Throughout the year, in Heda, there are 1.5 snowfall days, and 4mm (0.16") of snow is accumulated.

Sea temperature

In Heda, in January, the average water temperature is 16.2°C (61.2°F).
Note: Most people do not find swimming enjoyable in water of 16.2°C (61.2°F). The task of controlling breathing becomes tougher as the temperature drops from 21°C (69.8°F) to 15°C (59°F).

Daylight

In January, the average length of the day in Heda is 10h and 7min.
On the first day of January in Heda, sunrise is at 06:52 and sunset at 16:43. On the last day of the month, sunrise is at 06:44 and sunset at 17:11 JST.

Sunshine

In January, the average sunshine is 6.6h.

UV index

The months with the lowest UV index in Heda are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 in January interprets into the following advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The month of January sees the average lowest temperatures in Heda, reaching 8.2°C (46.8°F) at the peak and 2°C (35.6°F) at the low.

During January, Heda experiences an average high-temperature of 8.2°C (46.8°F) and a low-temperature of 2°C (35.6°F).

With an average relative humidity of 67%, January is the least humid month in Heda, Japan.

In Heda, the average relative humidity in January is 67%.

January is the month with the least rainfall in Heda. Rain falls for 8.7 days and accumulates 50mm (1.97") of precipitation.

In Heda, Japan, in January, during 8.7 rainfall days, 50mm (1.97") of precipitation is typically accumulated.

In Heda, in January, during 0.4 snowfall days, 1mm (0.04") of snow is typically accumulated.

In Heda, the average seawater temperature in January is 16.2°C (61.2°F). For most, swimming in 16.2°C (61.2°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).

In January, the average day length in Heda, Japan, is 10h and 7min.

On the first day of January in Heda, Japan, sunrise is at 06:52 and sunset at 16:43. On the last day of the month, sunrise is at 06:44 and sunset at 17:11 JST.

The average sunshine duration in January is 6.6h.

The months with the lowest UV index in Heda are January and December, with an average maximum UV index of 2.

In Heda, Japan, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

10.4°C

8.2°C

9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.8km/h

13.5km/h

13.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.3

0.4

0.7

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

18.2

18.9

12.9

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Heda, Japan

Average high temperature in January: 8.2°C

The warmest month (with the highest average high temperature) is August (28.7°C).
The month with the lowest average high temperature is January (8.2°C).

Average low temperature in January: 2°C

The month with the highest average low temperature is August (22.8°C).
The coldest month (with the lowest average low temperature) is January (2°C).

Average pressure in January
Heda, Japan

Average pressure in January: 1016.7mbar

The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in January
Heda, Japan

Average wind speed in January: 12.3km/h

The windiest month (with the highest average wind speed) is March (13.2km/h).
The calmest month (with the lowest average wind speed) is August (10.2km/h).

Average humidity in January
Heda, Japan

Average humidity in January: 67%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is January (67%).

Average rainfall in January
Heda, Japan

Average rainfall in January: 50mm

The wettest month (with the highest rainfall) is July (202mm).
The driest month (with the least rainfall) is January (50mm).

Average rainfall days in January
Heda, Japan

Average rainfall days in January: 8.7 days

The month with the highest number of rainy days is July (21.9 days).
The month with the least rainy days is January (8.7 days).

Average snowfall in January
Heda, Japan

Average snowfall in January: 1mm

The month with the highest snowfall is February (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).

Average snowfall days in January
Heda, Japan

Average snowfall days in January: 0.4 days

The month with the highest number of snowfall days is February (0.7 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
Heda, Japan

Average sea temperature in January: 16.2°C

The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (15.3°C).

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

Average daylight in January: 10h and 6min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

Average sunshine in January: 6h and 36min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).

Average sunshine days in January
Heda, Japan

Average sunshine days in January: 18.9 days

The month with the most sunshine days is January (18.9 days).
The month with the least sunshine days is July (4.3 days).

Average UV index in January
Heda, Japan

Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in January
Heda, Japan

Average cloud cover in January: 24

The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 24).

Average visibility in January
Heda, Japan

Average visibility in January: 10km

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