Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Castle Hill's shift into January is marked by a subtle change to a still mild 15.2°C (59.4°F) from December's 13.5°C (56.3°F) in temperature. Throughout January, an average low-temperature of 6.4°C (43.5°F) is experienced.Humidity
The months with the lowest humidity in Castle Hill, New Zealand, are January and February, with an average relative humidity of 83%.Rainfall
In Castle Hill, during January, the rain falls for 18 days and regularly aggregates up to 116mm (4.57") of precipitation. In Castle Hill, during the entire year, the rain falls for 162.6 days and collects up to 1501mm (59.09") of precipitation.Snowfall
January through December are months with snowfall. January is the month with the least snowfall. Snow falls for 1.8 days and accumulates 9mm (0.35") of snow.Daylight
In January, the average length of the day is 14h and 58min.On the first day of January, sunrise is at 5:56 am and sunset at 9:16 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 9:00 pm NZDT.
Sunshine
In Castle Hill, the average sunshine in January is 7.8h.UV index
The month with the highest UV index is January, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 4 during January translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What are January temperatures in Castle Hill?
What is the least humid month in Castle Hill?
What is the average humidity in January in Castle Hill?
How much does it rain in Castle Hill in January?
When it does not snow in Castle Hill?
How much does it snow in Castle Hill in January?
How many hours of daylight does Castle Hill have in January?
When are sunrise and sunset in January in Castle Hill?
How many hours of sunshine does Castle Hill have in January?
When is the highest UV index in Castle Hill?
What is the UV index intensity in January in Castle Hill?
Average temperature in January
Castle Hill, New Zealand
- Average high temperature in January: 15.2°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 January: 6.4°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 January
Castle Hill, New Zealand
- Average pressure in January: 1012mbar
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 January
Castle Hill, New Zealand
- Average wind speed in January: 12.6km/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 January
Castle Hill, New Zealand
- Average humidity in January: 83%
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 January
Castle Hill, New Zealand
- Average rainfall in January: 116mm
The wettest month (with the highest rainfall) is November (176mm).
The driest month (with the least rainfall) is February (87mm).
Average rainfall days in January
Castle Hill, New Zealand
- Average rainfall days in January: 18 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 January
Castle Hill, New Zealand
- Average snowfall in January: 9mm
The month with the highest snowfall is August (734mm).
The month with the least snowfall is January (9mm).
Average snowfall days in January
Castle Hill, New Zealand
- Average snowfall days in January: 1.8 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 January /
Average sunshine in January
Castle Hill, New Zealand
- Average daylight in January: 15h and 0min
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 January: 7h and 5min
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 January
Castle Hill, New Zealand
- Average sunshine days in January: 9.7 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 January
Castle Hill, New Zealand
- Average UV index in January: 4
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 January
Castle Hill, New Zealand
- Average cloud cover in January: 57
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 January
Castle Hill, New Zealand
- Average visibility in January: 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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