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Contents
- The climate of Porirua
- The best time to visit Porirua
- The worst time to visit Porirua
- Spring weather in Porirua
- Summer weather in Porirua
- Autumn weather in Porirua
- Winter weather in Porirua
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Porirua
The coastal city of Porirua, New Zealand experiences a marine west coast climate, classified as Cfb under the Köppen climate classification. Conveniently positioned along the southeastern coastline, it experiences a mild climate with warm summers.
Throughout the year, temperature highs range from 11.2°C (52.2°F) to 19.2°C (66.6°F) while lows fluctuate between 8.2°C (46.8°F) and 14.7°C (58.5°F). Notably, relative humidity averages approximately 80% throughout the year, infusing the air with a palpable dampness.
Rainfall in Porirua is a significant factor, with each month experiencing a distinctive volume. The amount of rain ranges from 22mm (0.87") in February to 55mm (2.17") in June. Correspondingly, the city reports a variation in the number of rainfall days, from 7.9 days in February to 14.8 days in June. Simultaneously, the sea temperature ebbs and flows from 12.3°C (54.1°F) to 17.1°C (62.8°F) across the twelve months, with the coldest sea in August and the warmest in February.
Of particular interest is Porirua's sunlight statistics, both in terms of daylight hours and actual sunshine hours. The number of daylight hours oscillates from 9.3 hours in June to 15.1 hours in December, with the longest periods occurring within the southern hemisphere's summer. Sunshine hours, on the other hand, range from 5.2 hours in June up to 9.1 hours in November and December.
Throughout the year, temperature highs range from 11.2°C (52.2°F) to 19.2°C (66.6°F) while lows fluctuate between 8.2°C (46.8°F) and 14.7°C (58.5°F). Notably, relative humidity averages approximately 80% throughout the year, infusing the air with a palpable dampness.
Rainfall in Porirua is a significant factor, with each month experiencing a distinctive volume. The amount of rain ranges from 22mm (0.87") in February to 55mm (2.17") in June. Correspondingly, the city reports a variation in the number of rainfall days, from 7.9 days in February to 14.8 days in June. Simultaneously, the sea temperature ebbs and flows from 12.3°C (54.1°F) to 17.1°C (62.8°F) across the twelve months, with the coldest sea in August and the warmest in February.
Of particular interest is Porirua's sunlight statistics, both in terms of daylight hours and actual sunshine hours. The number of daylight hours oscillates from 9.3 hours in June to 15.1 hours in December, with the longest periods occurring within the southern hemisphere's summer. Sunshine hours, on the other hand, range from 5.2 hours in June up to 9.1 hours in November and December.
The best time to visit Porirua
Given the influence of various climatic factors, the ideal time to visit Porirua is within the warmer months from November to March. These months present an opportunity to experience temperatures reaching up to 19.2°C (66.6°F) with comparatively lower rainfall levels between 22mm (0.87") and 39mm (1.54"). With daylight stretching over 14 hours and sunshine hours peaking at 9.1 hours on average, these months are prime for outdoor activities.
The worst time to visit Porirua
Conversely, June offers the least ideal conditions for visiting Porirua. With a high rainfall of 55mm (2.17") over an average of 14.8 days, and the lowest sunshine hours of the year at 5.2, the city can feel notably dull. Paired with a cool average high temperature of 11.9°C (53.4°F) and sea temperatures of 13.4°C (56.1°F), outdoor activities may seem less appealing.
Spring weather in Porirua
Spring, spanning from September to November, sees temperatures in Porirua gradually rise from 12.3°C (54.1°F) to 15.4°C (59.7°F). Correspondingly, the low temperatures rise from 8.9°C (48°F) to 11°C (51.8°F). Meanwhile, rainfall slightly increases from 32mm (1.26") to 39mm (1.54"), with rainfall days also increasing from 12.9 days to 9.5 days. This season also ushers in longer daylight hours, stretching from 11.8 hours to 14.4 hours with a gradual increase in sunshine hours from 7.4 to 9.1.
Summer weather in Porirua
Summer in Porirua, which runs from December to February, is characterized by the highest temperatures of the year. Highs range from 17.5°C (63.5°F) to 19.2°C (66.6°F), while lows sit between 13.4°C (56.1°F) and 14.7°C (58.5°F). Rainfall amounts are modest, ranging from 26mm (1.02") to 42mm (1.65") with rainfall days approximately between 9.6 and 11.1. Both daylight and sunshine hours peak at this time, with daylight lasting up to 15.1 hours and sunshine radiating for up to 9.1 hours daily.
Autumn weather in Porirua
Autumn months of March, April, and May in Porirua experience a gradual decrease in temperature. Highs move from 18°C (64.4°F) to 14°C (57.2°F), with lows falling from 13.5°C (56.3°F) to 10.6°C (51.1°F). Rainfall increases significantly, moving from 28mm (1.1") to 44mm (1.73"), as does the number of rainfall days from 8.8 to 12.6. Daylight hours reduce from 12.4 to 9.9, with sunshine hours also decreasing.
Winter weather in Porirua
Winter in Porirua takes place from June to August. The temperatures during this period are the lowest of the year, with highs oscillating from 11.2°C (52.2°F) to 11.7°C (53.1°F) and lows from 8.2°C (46.8°F) to 8.3°C (46.9°F). Over this period, rainfall is at its highest, ranging from 43mm (1.69") to 55mm (2.17"), and the number of rainfall days is also at the yearly peak, from 14.7 to 14.8. Daylight is at its shortest, with June seeing only 9.3 hours. Despite the peak in rainfall, winter is not entirely gloomy, as there are between 5.2 to 6.9 sunshine hours daily.
Weather in January
January experiences one of the highest sea temperatures in Porirua, New Zealand, with a monthly average of 16.6°C (61.9°F). Despite the relatively warm sea temperature, January features near constant rainfall with an average of 26mm (1.02") falling over 9.6 days. Weather in January »
Weather in February
Being one of the warmest months, February features an average high temperature of 19.2°C (66.6°F). This makes it slightly warmer than January and noticeably warmer than the upcoming March. The increase in temperature concurs with a relative decrease in rainfall, strongly favouring outdoor plans. Weather in February »
Weather in March
As the transition from summer to autumn takes place in March, there is a noticeable decrease in the temperature with the average high being 18°C (64.4°F). Counterintuitively, March features one of the highest rainfall numbers, with an average of 28mm (1.1"). Weather in March »
Weather in April
The onset of autumn is clearly observable in April with the average high temperature dropping to 15.8°C (60.4°F) and the sea temperature falling to 15.5°C (59.9°F). Witnessing a significant increase relative to March, rainfall averages at 46mm (1.81"), making April one of the wettest months. Weather in April »
Weather in May
May marks the transition from autumn to winter, reflected in the continued drop in both air and sea temperatures. The rainfall decreases slightly, with an average of 44mm (1.73") spread over 12.6 days. As compared to April, the pressure decreases marginally in May, hinting at a transition towards winter. Weather in May »
Weather in June
The start of winter is prominent in June, as the lowest sea temperature of the year touches 13.4°C (56.1°F). An upsurge in rainfall to 55mm (2.17"), the highest for the year, indicates the onset of a wet season. The higher rainfall coupled with dropping temperatures in successive months underlines the prominence of indoor activities. Weather in June »
Weather in July
July, with an average high temperature of 11.2°C (52.2°F), is the coldest month in Porirua. Despite the transition into winter, July sees a decrease in precipitation with 50mm (1.97") falling across 14.7 days. The slightly cooler temperature compared to June makes July the peak of winter. Weather in July »
Weather in August
August, though still pretty cold, hints at a transition to spring with a slight increase in air temperature and reduced rainfall. Relative to July, the weather gets milder with an average high temperature of 11.7°C (53.1°F). Warm jackets remain necessary travel equipment, but the decreasing precipitation enables more outdoor sightseeing. Weather in August »
Weather in September
September marks the beginning of spring, with temperatures gradually starting to rise reaching an average of 12.3°C (54.1°F). The rainfall further reduces, averaging at 32mm (1.26"). September's improved climate makes it an ideal time for enjoying outdoor activities as Porirua transitions from the colder months. Weather in September »
Weather in October
The weather in October continues the transition towards summer with the average high temperature rising to 13.8°C (56.8°F). With the sea temperature also on an upward trajectory, the conditions are more conducive for watersports. Weather in October »
Weather in November
November experiences one of the most drastic temperature rises with a high average of 15.4°C (59.7°F). The climate continues to warm up, with the sea temperature rising to 14°C (57.2°F). Compared to October, November's weather becomes more predictable, signalling the encroaching summer season. Weather in November »
Weather in December
As the festive month, December brings about the highest temperatures of the year, with an average high of 17.5°C (63.5°F). Rainfall increases to 42mm (1.65"), slightly higher than in November but the occurrence remains moderate. Weather in December »
[Resources]Frequently asked questions
What are the least humid months in Porirua?
The months with the lowest humidity in Porirua, New Zealand, are January through March, July, September through November, with an average relative humidity of 80%.
How many days does it rain in Porirua?
In Porirua, during the entire year, the rain falls for 142.6 days and collects up to 465mm (18.31") of precipitation.
When is the highest UV index in Porirua?
January, February and December, with an average maximum UV index of 5, are months with the highest UV index in Porirua, New Zealand.
What are the warmest months in Porirua?
During the warmest month in Porirua, February, temperatures average a high of 19.2°C (66.6°F) and a low of 14.7°C (58.5°F).
What is the driest month in Porirua?
February is the month with the least rainfall in Porirua. Rain falls for 7.9 days and accumulates 22mm (0.87") of precipitation.
When is the sea warmest in Porirua?
With an average sea temperature of 17.1°C (62.8°F), February is the month with the warmest seawater.
What are the most humid months in Porirua?
April through June, August and December, with an average relative humidity of 81%, are most humid months in Porirua.
When is Daylight Saving Time (DST) in Porirua?
On Sunday, 07. April 2024, at 3:00 am, Daylight Saving Time ends in Porirua, New Zealand, and the time zone changes from NZDT to NZST. The next Daylight Saving Time starts on Sunday, 29. September 2024, at 2:00 am, and the time zone reverts from NZST to NZDT.
What are the months with the lowest UV index in Porirua?
The months with the lowest UV index in Porirua are May through August, with an average maximum UV index of 3.
What is the rainiest month in Porirua?
June is the month with the most rainfall in Porirua. Rain falls for 14.8 days and accumulates 55mm (2.17") of precipitation.
What is the month with the shortest days in Porirua?
With an average of 9h and 18min of daylight, June has the shortest days of the year in Porirua.
What is the month with the least sunshine in Porirua?
With an average of 5.2h of sunshine, June has the least sunshine of the year.
What time of the year is the coldest in Porirua?
The coldest month is July, with an average high-temperature of 11.2°C (52.2°F) and an average low-temperature of 8.2°C (46.8°F).
When is the sea coldest in Porirua?
With an average sea temperature of 12.3°C (54.1°F), August is the month with the coldest seawater.
What are the months with the most sunshine in Porirua?
November and December, with an average of 9.1h of sunshine, are months with the most sunshine.
When are the longest days in Porirua?
The month with the longest days is December, with an average of 15h and 6min of daylight.
Average temperature
Porirua, New Zealand
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).
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
Porirua, New Zealand
- Average pressure in January:
1012.5mbar - Average pressure in February:
1015.4mbar - Average pressure in March:
1017.7mbar - Average pressure in April:
1017mbar - Average pressure in May:
1014.1mbar - Average pressure in June:
1015.4mbar
- Average pressure in July:
1014.1mbar - Average pressure in August:
1013.4mbar - Average pressure in September:
1012.3mbar - Average pressure in October:
1012.5mbar - Average pressure in November:
1012.3mbar - Average pressure in December:
1013.4mbar
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
Porirua, New Zealand
- Average wind speed in January:
22.8km/h - Average wind speed in February:
20.3km/h - Average wind speed in March:
20.1km/h - Average wind speed in April:
21.3km/h - Average wind speed in May:
22.7km/h - Average wind speed in June:
21.3km/h
- Average wind speed in July:
23km/h - Average wind speed in August:
21.1km/h - Average wind speed in September:
24.1km/h - Average wind speed in October:
23.8km/h - Average wind speed in November:
23.1km/h - Average wind speed in December:
21.5km/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
Porirua, New Zealand
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
Porirua, New Zealand
The wettest month (with the highest rainfall) is June (55mm).
The driest month (with the least rainfall) is February (22mm).
Average rainfall days
Porirua, New Zealand
- Average rainfall days in January:
9.6 days - Average rainfall days in February:
7.9 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
12.9 days - Average rainfall days in May:
12.6 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
14.7 days - Average rainfall days in August:
14.7 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
13.1 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
11.1 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
Porirua, New Zealand
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 / Average sunshine
Porirua, New Zealand
- Average daylight in January:
14h and 4min - Average daylight in February:
13h and 4min - Average daylight in March:
12h and 2min - Average daylight in April:
11h and 0min - Average daylight in May:
9h and 5min - Average daylight in June:
9h and 2min
- Average daylight in July:
9h and 3min - Average daylight in August:
10h and 3min - Average daylight in September:
11h and 5min - Average daylight in October:
13h and 1min - Average daylight in November:
14h and 2min - 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 18min).
- Average sunshine in January:
8h and 4min - Average sunshine in February:
8h and 1min - Average sunshine in March:
7h and 5min - Average sunshine in April:
7h and 2min - Average sunshine in May:
7h and 2min - Average sunshine in June:
5h and 1min
- Average sunshine in July:
6h and 5min - Average sunshine in August:
6h and 5min - Average sunshine in September:
7h and 2min - Average sunshine in October:
7h and 4min - Average sunshine in November:
9h and 1min - Average sunshine in December:
9h and 1min
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
Porirua, New Zealand
- Average sunshine days in January:
20 days - Average sunshine days in February:
18.5 days - Average sunshine days in March:
20.6 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
15.6 days - Average sunshine days in June:
12.6 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
14 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
16.4 days - Average sunshine days in November:
18.3 days - Average sunshine days in December:
17.8 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
Porirua, New Zealand
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
Porirua, New Zealand
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
Porirua, New Zealand
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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