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 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
Porirua marks the start of January with an average high-temperature of a still comfortable 18.7°C (65.7°F), hinting at a slight fluctuation from December's 17.5°C (63.5°F). Porirua's nighttime temperatures in January settle close to daytime highs at an average of 14.4°C (57.9°F).Humidity
January through March, July, September through November, with an average relative humidity of 80%, are the least humid months in Porirua.Rainfall
In Porirua, New Zealand, in January, it is raining for 9.6 days, with typically 26mm (1.02") of accumulated precipitation. In Porirua, during the entire year, the rain falls for 142.6 days and collects up to 465mm (18.31") of precipitation.Sea temperature
In January, the average sea temperature is 16.6°C (61.9°F).Note: Swimming in water at 16.6°C (61.9°F) is not a pleasing experience for the majority. As the temperature descends from 21°C (69.8°F) to 15°C (59°F), controlling breathing becomes increasingly hard.
Daylight
The average length of the day in January is 14h and 45min.On the first day of January, sunrise is at 5:51 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:43 pm NZDT.
Sunshine
In January, the average sunshine is 8.7h.UV index
January, February and December, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In January, the maximum UV index of 5 transforms into these recommendations:
Undertake precautions - Guarding against sun damage is counselled. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in January in Porirua?
What are the least humid months in Porirua?
What is the average humidity in January in Porirua?
How much does it rain in Porirua in January?
How cold is the water in January in Porirua?
How many hours of daylight does Porirua have in January?
When is the sunrise / sunset in January in Porirua?
How long on average sun shines in January in Porirua?
When is the highest UV index in Porirua?
How high is the UV index in January in Porirua?
Average temperature in January
Porirua, New Zealand
- Average high temperature in January: 18.7°C
The warmest month (with the highest average high temperature) is February (19.2°C).
The month with the lowest average high temperature is July (11.2°C).
- Average low temperature in January: 14.4°C
The month with the highest average low temperature is February (14.7°C).
The coldest month (with the lowest average low temperature) is July (8.2°C).
Average pressure in January
Porirua, New Zealand
- Average pressure in January: 1012.5mbar
The month with the highest atmospheric pressure is March (1017.7mbar).
The months with the lowest atmospheric pressure are September and November (1012.3mbar).
Average wind speed in January
Porirua, New Zealand
- Average wind speed in January: 22.8km/h
The windiest month (with the highest average wind speed) is September (24.1km/h).
The calmest month (with the lowest average wind speed) is March (20.1km/h).
Average humidity in January
Porirua, New Zealand
- Average humidity in January: 80%
The months with the highest relative humidity are April, May, June, August and December (81%).
The months with the lowest relative humidity are January, February, March, July, September, October and November (80%).
Average rainfall in January
Porirua, New Zealand
- Average rainfall in January: 26mm
The wettest month (with the highest rainfall) is June (55mm).
The driest month (with the least rainfall) is February (22mm).
Average rainfall days in January
Porirua, New Zealand
- Average rainfall days in January: 9.6 days
The month with the highest number of rainy days is June (14.8 days).
The month with the least rainy days is February (7.9 days).
Average sea temperature in January
Porirua, New Zealand
- Average sea temperature in January: 16.6°C
The best month for swimming (with the highest average sea temperature) is February (17.1°C).
The coldest month (with the lowest average sea temperature) is August (12.3°C).
Average daylight in January /
Average sunshine in January
Porirua, New Zealand
- Average daylight in January: 14h and 4min
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 18min).
- Average sunshine in January: 8h and 4min
The months with the most sunshine are November and December (Average sunshine: 9h and 6min).
The month with the least sunshine is June (Average sunshine: 5h and 12min).
Average sunshine days in January
Porirua, New Zealand
- Average sunshine days in January: 20 days
The month with the most sunshine days is March (20.6 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in January
Porirua, New Zealand
- Average UV index in January: 5
The months with the highest UV index are January, February and December (UV index 5).
The months with the lowest UV index are May, June, July and August (UV index 3).
Average cloud cover in January
Porirua, New Zealand
- Average cloud cover in January: 32
The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is February (Cloud cover 31).
Average visibility in January
Porirua, New Zealand
- Average visibility in January: 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).
Porirua, New Zealand
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