December weather forecast
Nelson, New Zealand

December arrives in Nelson as the herald of summer, carrying warmer temperatures and an active life. The weather in Nelson in December receives a significant amount of rainfall, adding vitality to the city's lush landscapes. The reinvented landscapes allure both residents and visitors to partake in outdoor festivities. With daylight hours peaking at 15.1 hours, Nelson enables extended engagements with the sun. Nelson's December wraps up the end of the year with a warm embrace, filled with sunshine and joy.

Temperature

The arrival of December marks a slight shift to an average high-temperature of a pleasant 20.7°C (69.3°F) from November's 18.9°C (66°F). During the month of December, the temperature falls to an average of 12°C (53.6°F).

Humidity

The average relative humidity in December in Nelson is 74.2%.

Rainfall

In December, the rain falls for 8.6 days. Throughout December, 84mm (3.31") of precipitation is accumulated. Throughout the year, in Nelson, there are 93.4 rainfall days, and 960mm (37.8") of precipitation is accumulated.

Sea temperature

In Nelson, New Zealand, in December, the average water temperature is 17°C (62.6°F).
Note: For most, swimming in 17°C (62.6°F) is not a pleasant experience. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes more difficult.

Daylight

December has the longest days of the year, with an average of 15h and 6min of daylight.
On the first day of December, sunrise is at 5:48 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 9:03 pm NZDT.

Sunshine

The average sunshine in December is 7.8h.

UV index

The average daily maximum UV index in December is 10. A UV Index reading of 8 to 10 represents a very high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 10 in December translates into this advice:
Without proper safety measures, skin and eyes can be quickly harmed. Be sure to protect yourself. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Enhance your sun protection with tightly woven, yet airy clothing.