December weather forecast
Kochi, Japan

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.