December weather forecastKochi, Japan

December

Weather in December

Concluding the year in Kochi, temperatures seem to hit a low of 3.8°C (38.8°F), signaling the onset of winter.. The city experiences a further decline in temperatures, daylight hours and sea temperatures, implying colder and shorter days. However, rainfall decreases to 58mm (2.28"), a stark contrast from the wetter months before. Sunshine hours increase considerably despite the decrease in daylight duration, providing bright and gleaming days. A year in Kochi closes on a cool note, preparing to start the cycle anew.

Temperature

Kochi's December weather features a mild decline in high-temperatures, reducing from a refreshing 19.3°C (66.7°F) in November to a moderate 14.3°C (57.7°F). Throughout December, Kochi anticipates an average low-temperature of 3.8°C (38.8°F).

Humidity

In Kochi, Japan, the average relative humidity in December is 63%.

Rainfall

The month with the least rainfall is December, when the rain falls for 12.3 days and typically collects 58mm (2.28") of precipitation.

Sea temperature

In Kochi, the average seawater temperature in December is 20°C (68°F).
Note: Swimming in 20°C (68°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

December has the shortest days of the year in Kochi, with an average of 10h and 0min of daylight.
On the first day of December, sunrise is at 06:52 and sunset at 16:57. On the last day of the month, sunrise is at 07:09 and sunset at 17:07 JST.

Sunshine

The average sunshine in December in Kochi, Japan, is 6.2h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In December, a regular UV index of 3 translates into these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.

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

Frequently asked questions

During December, Kochi experiences an average high-temperature of 14.3°C (57.7°F) and a low-temperature of 3.8°C (38.8°F). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is computed to be 34°C (93.2°F).

The average relative humidity in December in Kochi is 63%.

December is the month with the least rainfall in Kochi. Rain falls for 12.3 days and accumulates 58mm (2.28") of precipitation.

In Kochi, in December, during 12.3 rainfall days, 58mm (2.28") of precipitation is typically accumulated.

In Kochi, in December, the average water temperature is 20°C (68°F). For swimming, a surface water temperature of 20°C (68°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

The month with the shortest days in Kochi is December, with an average of 10h and 0min of daylight.

The average day length in December is 9h and 58min.

On the first day of December, sunrise is at 06:52 and sunset at 16:57. On the last day of the month, sunrise is at 07:09 and sunset at 17:07 JST.

The average sunshine duration in December in Kochi is 6.2h.

January and December, with an average maximum UV index of 3, are months with the lowest UV index.

The average daily maximum UV index in December in Kochi, Japan, is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

19.3°C

14.3°C

11.9°C

Average low temperature

Average humidity

Average rainfall

Average rainfall days

12.3

13.1

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in December
Kochi, Japan

Average high temperature in December: 14.3°C

The warmest month (with the highest average high temperature) is August (31.9°C).
The month with the lowest average high temperature is January (11.9°C).

Average low temperature in December: 3.8°C

The month with the highest average low temperature is August (24°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).

Average humidity in December
Kochi, Japan

Average humidity in December: 63%

The month with the highest relative humidity is July (78%).
The month with the lowest relative humidity is February (59%).

Average rainfall in December
Kochi, Japan

Average rainfall in December: 58.4mm

The wettest month (with the highest rainfall) is September (350mm).
The driest month (with the least rainfall) is December (58.4mm).

Average rainfall days in December
Kochi, Japan

Average rainfall days in December: 12.3 days

The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is November (12 days).

Average sea temperature in December
Kochi, Japan

Average sea temperature in December: 20°C

The best month for swimming (with the highest average sea temperature) is August (27.8°C).
The coldest months (with the lowest average sea temperature) are February and March (16.9°C).

Average daylight in December /
Average sunshine in December
Kochi, 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: 6h and 12min

The month with the most sunshine is August (Average sunshine: 6h and 36min).
The month with the least sunshine is June (Average sunshine: 4h and 42min).