December weather forecastSaiki, Japan
December
Weather in December
The first month of the winter, December, is also a fresh month in Saiki, Japan, with temperature in the range of an average low of 7.4°C (45.3°F) and an average high of 12°C (53.6°F).Temperature
With December's onset, the weather reveals a slight temperature decrease, transitioning from an enjoyable 16.8°C (62.2°F) in November to a cool 12°C (53.6°F). Nighttime temperatures during December report a consistent average of 7.4°C (45.3°F).Humidity
In Saiki, the average relative humidity in December is 73%.Rainfall
In Saiki, in December, during 11.3 rainfall days, 62mm (2.44") of precipitation is typically accumulated. Throughout the year, there are 168.7 rainfall days, and 1189mm (46.81") of precipitation is accumulated.Snowfall
Months with snowfall are January, February and December. December is the first month it typically snows in Saiki. Throughout December, in the average 0.9 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, there are 3 snowfall days, and 4mm (0.16") of snow is accumulated.Sea temperature
In December, the average sea temperature in Saiki is 20.5°C (68.9°F).Note: Most people find swimming in 20.5°C (68.9°F) to be not enjoyable. The control of one's breathing becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
The month with the shortest days in Saiki is December, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 06:57 and sunset at 17:05. On the last day of December, in Saiki, sunrise is at 07:14 and sunset at 17:15 JST.
Sunshine
December has the least sunshine of the year in Saiki, with an average of 5.8h of sunshine.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index in Saiki. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 2 in December translates into this advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Saiki, Japan
- Average high temperature in December: 12°C
The warmest month (with the highest average high temperature) is August (29.3°C).
The month with the lowest average high temperature is January (9.8°C).
- Average low temperature in December: 7.4°C
The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is January (5.1°C).
Average pressure in December
Saiki, Japan
- Average pressure in December: 1020.8mbar
The month with the highest atmospheric pressure is January (1021.3mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).
Average wind speed in December
Saiki, Japan
- Average wind speed in December: 16.7km/h
The windiest month (with the highest average wind speed) is January (16.8km/h).
The calmest month (with the lowest average wind speed) is June (9.8km/h).
Average humidity in December
Saiki, Japan
- Average humidity in December: 73%
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January and March (71%).
Average rainfall in December
Saiki, Japan
- Average rainfall in December: 62mm
The wettest month (with the highest rainfall) is June (190mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in December
Saiki, Japan
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is July (23 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Saiki, Japan
- Average snowfall in December: 1mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Saiki, Japan
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is January (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Saiki, Japan
- Average sea temperature in December: 20.5°C
The best month for swimming (with the highest average sea temperature) is August (28°C).
The coldest month (with the lowest average sea temperature) is February (17.3°C).
Average daylight in December /
Average sunshine in December
Saiki, Japan
- Average daylight in December: 10h and 0min
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 December: 5h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Saiki, Japan
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is October (17.9 days).
The month with the least sunshine days is July (5.8 days).
Average UV index in December
Saiki, Japan
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Saiki, Japan
- Average cloud cover in December: 33
The month with the most cloud cover is June (Cloud cover 48).
The months with the least cloud cover are January, August, November and December (Cloud cover 33).
Average visibility in December
Saiki, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).
