Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Castle Hill, New Zealand, starts December with an average high-temperature of a moderate 13.5°C (56.3°F), hinting at a minimal fluctuation from November. An average low-temperature of 5.6°C (42.1°F) is noted during the month of December.Humidity
In Castle Hill, the average relative humidity in December is 85%.Rainfall
In Castle Hill, in December, it is raining for 18.5 days, with typically 169mm (6.65") of accumulated precipitation. Throughout the year, there are 162.6 rainfall days, and 1501mm (59.09") of precipitation is accumulated.Snowfall
January through December are months with snowfall in Castle Hill. In Castle Hill, in December, snow falls for 2.7 days, with typically accumulated 105mm (4.13") of snow. In Castle Hill, during the entire year, snow falls for 114.9 days and aggregates up to 3387mm (133.35") of snow.Daylight
The month with the longest days in Castle Hill is December, with an average of 15h and 18min of daylight.On the first day of the month, sunrise is at 5:48 am and sunset at 8:56 pm. On the last day of December, sunrise is at 5:56 am and sunset at 9:16 pm NZDT.
Sunshine
The month with the most sunshine is December, with an average of 8h of sunshine.UV index
In Castle Hill, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 3 during December translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What is the average December temperature in Castle Hill?
What is the average humidity in December in Castle Hill?
How much does it rain in Castle Hill in December?
How many days does it snow in December in Castle Hill?
When are the longest days in Castle Hill?
How many hours of daylight does Castle Hill have in December?
What time are sunrise and sunset in December in Castle Hill?
What month has the most sunshine in Castle Hill?
How long on average sun shines in December in Castle Hill?
How high is the UV index in December in Castle Hill?
Average temperature in December
Castle Hill, New Zealand
- Average high temperature in December: 13.5°C
The warmest month (with the highest average high temperature) is February (15.7°C).
The month with the lowest average high temperature is July (3.5°C).
- Average low temperature in December: 5.6°C
The months with the highest average low temperature are January and February (6.4°C).
The coldest month (with the lowest average low temperature) is July (-2.4°C).
Average pressure in December
Castle Hill, New Zealand
- Average pressure in December: 1012.5mbar
The month with the highest atmospheric pressure is March (1017.3mbar).
The months with the lowest atmospheric pressure are September and November (1011.7mbar).
Average wind speed in December
Castle Hill, New Zealand
- Average wind speed in December: 11.4km/h
The windiest month (with the highest average wind speed) is January (12.6km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).
Average humidity in December
Castle Hill, New Zealand
- Average humidity in December: 85%
The months with the highest relative humidity are July and August (92%).
The months with the lowest relative humidity are January and February (83%).
Average rainfall in December
Castle Hill, New Zealand
- Average rainfall in December: 169mm
The wettest month (with the highest rainfall) is November (176mm).
The driest month (with the least rainfall) is February (87mm).
Average rainfall days in December
Castle Hill, New Zealand
- Average rainfall days in December: 18.5 days
The month with the highest number of rainy days is December (18.5 days).
The month with the least rainy days is July (7.3 days).
Average snowfall in December
Castle Hill, New Zealand
- Average snowfall in December: 105mm
The month with the highest snowfall is August (734mm).
The month with the least snowfall is January (9mm).
Average snowfall days in December
Castle Hill, New Zealand
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is August (20.3 days).
The month with the least snowfall days is February (0.8 days).
Average daylight in December /
Average sunshine in December
Castle Hill, New Zealand
- Average daylight in December: 15h and 2min
The month with the longest days is December (Average daylight: 15h and 18min).
The month with the shortest days is June (Average daylight: 9h and 0min).
- Average sunshine in December: 8h and 0min
The month with the most sunshine is December (Average sunshine: 8h and 0min).
The month with the least sunshine is June (Average sunshine: 4h and 18min).
Average sunshine days in December
Castle Hill, New Zealand
- Average sunshine days in December: 9.8 days
The month with the most sunshine days is March (14.1 days).
The month with the least sunshine days is October (7.4 days).
Average UV index in December
Castle Hill, New Zealand
- Average UV index in December: 3
The month with the highest UV index is January (UV index 4).
The months with the lowest UV index are June and July (UV index 1).
Average cloud cover in December
Castle Hill, New Zealand
- Average cloud cover in December: 61
The month with the most cloud cover is October (Cloud cover 68).
The month with the least cloud cover is February (Cloud cover 55).
Average visibility in December
Castle Hill, New Zealand
- Average visibility in December: 8km
The months with the highest visibility are January, March and December (8km).
The month with the lowest visibility is August (6km).
Castle Hill, New Zealand
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