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 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
December
Weather in December
Temperature
The commencement of December introduces an average high-temperature of a still refreshing 17.2°C (63°F), closely mirroring the preceding month. Island Bay registers a small shift from peak daytime temperatures, with a consistent average low-temperature of 14°C (57.2°F) during December.Humidity
February through April and December, with an average relative humidity of 80%, are the most humid months in Island Bay.Rainfall
In Island Bay, in December, it is raining for 11.8 days, with typically 37mm (1.46") of accumulated precipitation. In Island Bay, during the entire year, the rain falls for 144.3 days and collects up to 394mm (15.51") of precipitation.Daylight
December has the longest days of the year in Island Bay, with an average of 15h and 6min of daylight.On the first day of the month, sunrise is at 5:42 am and sunset at 8:37 pm. On the last day of December, in Island Bay, sunrise is at 5:50 am and sunset at 8:57 pm NZDT.
Sunshine
The month with the most sunshine in Island Bay, New Zealand, is December, with an average of 9.4h of sunshine.UV index
January through March and December, with an average maximum UV index of 5, are months with the highest UV index in Island Bay. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 5 in December suggests the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Island Bay?
What is the most humid month in Island Bay?
What is the average humidity in December in Island Bay?
How much does it rain in Island Bay in December?
When are the longest days in Island Bay?
What is the average length of the day in December in Island Bay?
When is the sunrise / sunset in December in Island Bay?
What month has the most sunshine in Island Bay?
How long on average sun shines in December in Island Bay?
What is the month with the highest UV index in Island Bay?
What is the UV index intensity in December in Island Bay?
Average temperature in December
Island Bay, New Zealand
- Average high temperature in December: 17.2°C
The warmest month (with the highest average high temperature) is February (18.8°C).
The month with the lowest average high temperature is July (11.4°C).
- Average low temperature in December: 14°C
The month with the highest average low temperature is February (15.4°C).
The coldest month (with the lowest average low temperature) is July (9°C).
Average pressure in December
Island Bay, New Zealand
- Average pressure in December: 1013.3mbar
The month with the highest atmospheric pressure is March (1017.7mbar).
The months with the lowest atmospheric pressure are September and November (1012.2mbar).
Average wind speed in December
Island Bay, New Zealand
- Average wind speed in December: 24.5km/h
The windiest month (with the highest average wind speed) is September (26.9km/h).
The calmest month (with the lowest average wind speed) is March (23.1km/h).
Average humidity in December
Island Bay, New Zealand
- Average humidity in December: 80%
The months with the highest relative humidity are February, March, April and December (80%).
The month with the lowest relative humidity is July (78%).
Average rainfall in December
Island Bay, New Zealand
- Average rainfall in December: 37mm
The wettest month (with the highest rainfall) is June (47mm).
The driest months (with the least rainfall) are January and February (20mm).
Average rainfall days in December
Island Bay, New Zealand
- Average rainfall days in December: 11.8 days
The month with the highest number of rainy days is June (14.5 days).
The month with the least rainy days is February (8 days).
Average daylight in December /
Average sunshine in December
Island Bay, New Zealand
- Average daylight in December: 15h and 1min
The month with the longest days is December (Average daylight: 15h and 6min).
The month with the shortest days is June (Average daylight: 9h and 12min).
- Average sunshine in December: 9h and 2min
The month with the most sunshine is December (Average sunshine: 9h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 24min).
Average sunshine days in December
Island Bay, New Zealand
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is March (19 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Island Bay, New Zealand
- Average UV index in December: 5
The months with the highest UV index are January, February, March and December (UV index 5).
The months with the lowest UV index are May and June (UV index 3).
Average cloud cover in December
Island Bay, New Zealand
- Average cloud cover in December: 36
The month with the most cloud cover is June (Cloud cover 44).
The month with the least cloud cover is February (Cloud cover 30).
Average visibility in December
Island Bay, New Zealand
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
