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 sea temperature 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
In Riverton, the month of January registers the highest temperatures, averaging 17.1°C (62.8°F) at the peak and 10.3°C (50.5°F) at the lowest.Humidity
January, October through December, with an average relative humidity of 79%, are the least humid months in Riverton.Rainfall
The wettest months are January and November, with an average 76mm (2.99") of rainfall.Snowfall
In Riverton, New Zealand, snow does not fall in January through April, June, July, October through December.Sea temperature
In Riverton, the average seawater temperature in January is 14.3°C (57.7°F).Note: Diving into 14.3°C (57.7°F) is practical below 10°C (50°F), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 13°C (55.4°F) feels ice-cold.
Daylight
The average length of the day in January is 15h and 19min.On the first day of the month, sunrise is at 5:58 am and sunset at 9:43 pm. On the last day of January, in Riverton, sunrise is at 6:38 am and sunset at 9:24 pm NZDT.
Sunshine
The average sunshine in January is 8.1h.UV index
The months with the highest UV index are January through March and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during January leads to these instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
What month is the hottest in Riverton?
What are January temperatures in Riverton?
What are the least humid months in Riverton?
What is the average humidity in January in Riverton?
What is the rainiest month in Riverton?
How many days does it rain in January in Riverton?
When it does not snow in Riverton?
What is the water temperature in January in Riverton?
How many hours of daylight does Riverton have in January?
What time are sunrise and sunset in January in Riverton?
How long on average sun shines in January in Riverton?
What are the months with the highest UV index in Riverton?
How high is the UV index in January in Riverton?
Average temperature in January
Riverton, New Zealand
- Average high temperature in January: 17.1°C
The warmest month (with the highest average high temperature) is January (17.1°C).
The month with the lowest average high temperature is July (9.7°C).
- Average low temperature in January: 10.3°C
The month with the highest average low temperature is January (10.3°C).
The coldest month (with the lowest average low temperature) is August (5.2°C).
Average pressure in January
Riverton, New Zealand
- Average pressure in January: 1010mbar
The month with the highest atmospheric pressure is March (1015.8mbar).
The month with the lowest atmospheric pressure is September (1009.2mbar).
Average wind speed in January
Riverton, New Zealand
- Average wind speed in January: 17.5km/h
The windiest month (with the highest average wind speed) is October (19.1km/h).
The calmest month (with the lowest average wind speed) is March (15km/h).
Average humidity in January
Riverton, New Zealand
- Average humidity in January: 79%
The month with the highest relative humidity is May (83%).
The months with the lowest relative humidity are January, October, November and December (79%).
Average rainfall in January
Riverton, New Zealand
- Average rainfall in January: 76mm
The wettest months (with the highest rainfall) are January and November (76mm).
The driest month (with the least rainfall) is August (46mm).
Average rainfall days in January
Riverton, New Zealand
- Average rainfall days in January: 18.9 days
The month with the highest number of rainy days is October (21.5 days).
The month with the least rainy days is February (15.7 days).
Average snowfall in January
Riverton, New Zealand
- Average snowfall in January: 0mm
The month with the highest snowfall is August (13mm).
The months with the least snowfall are January, February, March, April, June, July, October, November and December (0mm).
Average snowfall days in January
Riverton, New Zealand
- Average snowfall days in January: 0 days
The months with the highest number of snowfall days are August and September (0.3 days).
The months with the least snowfall days are January, February, March, April, June, October, November and December (0 days).
Average sea temperature in January
Riverton, New Zealand
- Average sea temperature in January: 14.3°C
The best month for swimming (with the highest average sea temperature) is February (15.2°C).
The coldest months (with the lowest average sea temperature) are July and August (10.8°C).
Average daylight in January /
Average sunshine in January
Riverton, New Zealand
- Average daylight in January: 15h and 2min
The month with the longest days is December (Average daylight: 15h and 42min).
The month with the shortest days is June (Average daylight: 8h and 42min).
- Average sunshine in January: 8h and 1min
The month with the most sunshine is December (Average sunshine: 9h and 42min).
The month with the least sunshine is June (Average sunshine: 4h and 30min).
Average sunshine days in January
Riverton, New Zealand
- Average sunshine days in January: 9.5 days
The month with the most sunshine days is June (11.6 days).
The month with the least sunshine days is October (7.1 days).
Average UV index in January
Riverton, New Zealand
- Average UV index in January: 4
The months with the highest UV index are January, February, March and December (UV index 4).
The month with the lowest UV index is June (UV index 2).
Average cloud cover in January
Riverton, New Zealand
- Average cloud cover in January: 51
The month with the most cloud cover is June (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 49).
Average visibility in January
Riverton, New Zealand
- Average visibility in January: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
Riverton, New Zealand
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