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
January
Weather in January
Temperature
Portobello's average high-temperature in January sits at a still refreshing 15.5°C (59.9°F), showing little difference from the previous month. The month of January in Portobello is marked by an average minimum temperature of 11.5°C (52.7°F), slightly cooler than its daytime counterpart.Humidity
In January, the average relative humidity is 79%.Rainfall
In Portobello, in January, during 14.9 rainfall days, 34mm (1.34") of precipitation is typically accumulated. Throughout the year, in Portobello, New Zealand, there are 150.6 rainfall days, and 357mm (14.06") of precipitation is accumulated.Snowfall
In Portobello, snow does not fall in January through July, September through December.Sea temperature
In Portobello, the average seawater temperature in January is 13.1°C (55.6°F).Note: Immersing oneself in 13.1°C (55.6°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.
Daylight
In January, the average length of the day is 15h and 15min.On the first day of the month, sunrise is at 5:50 am and sunset at 9:30 pm. On the last day of January, sunrise is at 6:29 am and sunset at 9:12 pm NZDT.
Sunshine
The average sunshine in January is 9.3h.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 4 in January translates into this advice:
Prioritize safety - Recommendations to avert sunburn are shared. Around midday, solar radiation is most harmful; hence, exposure should be limited. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in January in Portobello?
What is the average humidity in January in Portobello?
How much does it rain in Portobello in January?
When it does not snow in Portobello?
What is the sea water temperature in January in Portobello?
What is the average length of the day in January in Portobello?
When is the sunrise / sunset in January in Portobello?
How long on average sun shines in January in Portobello?
What is the month with the highest UV index in Portobello?
How high is the UV index in January in Portobello?
Average temperature in January
Portobello, New Zealand
- Average high temperature in January: 15.5°C
The warmest month (with the highest average high temperature) is February (15.8°C).
The month with the lowest average high temperature is July (9.2°C).
- Average low temperature in January: 11.5°C
The month with the highest average low temperature is February (11.7°C).
The coldest month (with the lowest average low temperature) is July (6.3°C).
Average pressure in January
Portobello, New Zealand
- Average pressure in January: 1010.1mbar
The month with the highest atmospheric pressure is March (1016.2mbar).
The month with the lowest atmospheric pressure is November (1009.7mbar).
Average wind speed in January
Portobello, New Zealand
- Average wind speed in January: 20.7km/h
The windiest month (with the highest average wind speed) is June (21.8km/h).
The calmest month (with the lowest average wind speed) is February (18.4km/h).
Average humidity in January
Portobello, New Zealand
- Average humidity in January: 79%
The months with the highest relative humidity are March and December (80%).
The month with the lowest relative humidity is July (76%).
Average rainfall in January
Portobello, New Zealand
- Average rainfall in January: 34mm
The wettest month (with the highest rainfall) is February (43mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days in January
Portobello, New Zealand
- Average rainfall days in January: 14.9 days
The month with the highest number of rainy days is October (15.6 days).
The month with the least rainy days is March (11.1 days).
Average snowfall in January
Portobello, New Zealand
- Average snowfall in January: 0mm
The month with the highest snowfall is August (3mm).
The months with the least snowfall are January, February, March, April, May, June, July, September, October, November and December (0mm).
Average snowfall days in January
Portobello, New Zealand
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is August (0.7 days).
The months with the least snowfall days are January, February, March, April, May, October and December (0 days).
Average sea temperature in January
Portobello, New Zealand
- Average sea temperature in January: 13.1°C
The best month for swimming (with the highest average sea temperature) is February (13.8°C).
The coldest month (with the lowest average sea temperature) is August (9.2°C).
Average daylight in January /
Average sunshine in January
Portobello, 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: 9h and 2min
The month with the most sunshine is December (Average sunshine: 10h and 36min).
The month with the least sunshine is June (Average sunshine: 4h and 30min).
Average sunshine days in January
Portobello, New Zealand
- Average sunshine days in January: 13.4 days
The month with the most sunshine days is March (17.9 days).
The month with the least sunshine days is January (13.4 days).
Average UV index in January
Portobello, New Zealand
- Average UV index in January: 4
The months with the highest UV index are January, February, March, November and December (UV index 4).
The months with the lowest UV index are April, May, June, July, August, September and October (UV index 3).
Average cloud cover in January
Portobello, New Zealand
- Average cloud cover in January: 45
The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is March (Cloud cover 40).
Average visibility in January
Portobello, 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).
