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
January, recognised by an average high temperature of 21.3°C (70.3°F) and a low of 11.9°C (53.4°F), is Rolleston's warmest month.Humidity
January is the least humid month in Rolleston, New Zealand, with an average relative humidity of 70%.Rainfall
In Rolleston, in January, during 10 rainfall days, 20mm (0.79") of precipitation is typically accumulated. In Rolleston, during the entire year, the rain falls for 114.3 days and collects up to 300mm (11.81") of precipitation.Snowfall
In Rolleston, snow does not fall in January through May, October through December.Daylight
In January, the average length of the day in Rolleston is 15h and 0min.On the first day of January, sunrise is at 5:52 am and sunset at 9:14 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 8:59 pm NZDT.
Sunshine
The average sunshine in January is 9.7h.UV index
With an average maximum UV index of 5, January is the month with the highest UV index in Rolleston. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 5 during January translates into the following guidance:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What is the hottest time of year in Rolleston?
What is the average January temperature in Rolleston?
What is the least humid month in Rolleston?
What is the average humidity in January in Rolleston?
How many days does it rain in January in Rolleston?
When it does not snow in Rolleston?
How many hours of daylight does Rolleston have in January?
When is the sunrise / sunset in January in Rolleston?
How many hours of sunshine does Rolleston have in January?
When is the highest UV index in Rolleston?
What is the UV index intensity in January in Rolleston?
Average temperature in January
Rolleston, New Zealand
- Average high temperature in January: 21.3°C
The warmest month (with the highest average high temperature) is January (21.3°C).
The month with the lowest average high temperature is July (10.3°C).
- Average low temperature in January: 11.9°C
The month with the highest average low temperature is January (11.9°C).
The coldest month (with the lowest average low temperature) is July (3.8°C).
Average pressure in January
Rolleston, New Zealand
- Average pressure in January: 1011.1mbar
The month with the highest atmospheric pressure is March (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).
Average wind speed in January
Rolleston, New Zealand
- Average wind speed in January: 15.3km/h
The windiest month (with the highest average wind speed) is January (15.3km/h).
The calmest month (with the lowest average wind speed) is August (12.4km/h).
Average humidity in January
Rolleston, New Zealand
- Average humidity in January: 70%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is January (70%).
Average rainfall in January
Rolleston, New Zealand
- Average rainfall in January: 20mm
The wettest month (with the highest rainfall) is October (38mm).
The driest month (with the least rainfall) is September (14mm).
Average rainfall days in January
Rolleston, New Zealand
- Average rainfall days in January: 10 days
The month with the highest number of rainy days is October (12.5 days).
The month with the least rainy days is May (8 days).
Average snowfall in January
Rolleston, New Zealand
- Average snowfall in January: 0mm
The month with the highest snowfall is August (5mm).
The months with the least snowfall are January, February, March, April, May, October, November and December (0mm).
Average snowfall days in January
Rolleston, New Zealand
- Average snowfall days in January: 0 days
The months with the highest number of snowfall days are June and August (0.3 days).
The months with the least snowfall days are January, February, March, April, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Rolleston, New Zealand
- Average daylight in January: 15h and 0min
The month with the longest days is December (Average daylight: 15h and 24min).
The month with the shortest days is June (Average daylight: 9h and 0min).
- Average sunshine in January: 9h and 4min
The month with the most sunshine is December (Average sunshine: 10h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 6min).
Average sunshine days in January
Rolleston, New Zealand
- Average sunshine days in January: 18.8 days
The month with the most sunshine days is May (21.2 days).
The month with the least sunshine days is November (17.3 days).
Average UV index in January
Rolleston, New Zealand
- Average UV index in January: 5
The month with the highest UV index is January (UV index 5).
The months with the lowest UV index are April, May, June, July, August and September (UV index 3).
Average cloud cover in January
Rolleston, New Zealand
- Average cloud cover in January: 37
The month with the most cloud cover is June (Cloud cover 43).
The months with the least cloud cover are January, February, March and May (Cloud cover 37).
Average visibility in January
Rolleston, New Zealand
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, June, July and December (10km).
The months with the lowest visibility are May, August, September, October and November (9km).
Rolleston, New Zealand
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