January Weather in Porirua, New Zealand

Last updated: August 31, 2025

Experience the vibrant January weather in Porirua, New Zealand, where temperatures range from a pleasant 11°C (52°F) to a warm 23°C (73°F), with an average of 17°C (62°F). This summer month brings about 33 mm (1.3 in) of precipitation, falling over just six days, making it a relatively dry period for the region. With humidity levels at a comfortable 79%, the climate is ideal for outdoor activities, allowing visitors to enjoy the stunning landscapes and coastal views that Porirua has to offer.

January Temperature in Porirua

In Porirua, New Zealand, January marks the height of summer, boasting a delightful average temperature of 17°C (62°F). With daily highs reaching up to 23°C (73°F), the month offers warm, sunny days perfect for outdoor activities, while nighttime lows dip to a comfortable 11°C (52°F). This month sets the tone for summer with its mild climate, slightly transitioning into February, where temperatures remain relatively stable. As the season progresses toward autumn, you'll notice a gradual cooling trend, with March experiencing a slight decline in maximum temperatures to 20°C (69°F), and average conditions hovering around 16°C (61°F). Overall, January in Porirua showcases an inviting warmth that appeals to visitors and locals alike, inviting them to relish the beautiful New Zealand summer.

January Weather in Porirua: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Porirua, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porirua, January typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec626261585653515252545760
Data source: Temperature data for Porirua generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Porirua

In January, Porirua experiences relatively low precipitation, with just 33 mm (1.3 in) over 6 days, marking the month as one of the driest in the year. This trend of lighter rainfall sets the stage for a gradual increase as summer transitions into autumn, with February and March seeing significant upticks to 69 mm (2.7 in) and 76 mm (3.0 in), respectively. The frequency of rainy days also begins to rise, preparing residents for the wetter months ahead. By April, the rainfall peaks at 104 mm (4.1 in) over 10 days, establishing a consistent pattern of increased moisture that persists through the winter months, where averages remain above 100 mm. This clear progression from January's sparse rain to the more generous showers of later months illustrates the dynamic weather patterns typical to Porirua's climate.

January Precipitation Trends in Porirua

The chart displays monthly precipitation patterns in Porirua, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Porirua, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec3369761048810110889857274101
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Porirua

In January, Porirua experiences a humidity level of 79%, a figure that remains consistent through February and March. This steadfast moisture sets the tone for the summer months, while April sees a slight rise to 80%, hinting at the transition into the cooler season. As winter approaches, May and June bring even more humidity, peaking at 84% and 86% respectively, indicating a fairly damp environment. The humidity remains steady at 86% through July, showcasing the winter's grip on the region. Following this, August and September experience a slight decline to 83%, before settling into the 82% range during the October to December months. Overall, January's humidity serves as a subtle prelude to the wetter winter ahead, highlighting Porirua's characteristic moisture throughout the year.

January Average Humidity in Porirua

This chart illustrates the average monthly humidity levels in Porirua, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Porirua is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%79%80%84%86%86%83%83%82%82%81%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Porirua

In Porirua, New Zealand, January ushers in an extreme UV Index of 13, with a quick burn time of just 10 minutes, mirroring February's conditions. As summer transitions into autumn, March sees a slight dip to a very high index of 9, where sunbathers need to take care within 15 minutes. The trend continues downwards into April, dropping to a high UV Index of 7 and a more forgiving 25-minute burn time. By winter, from June through July, the UV exposure reduces significantly to low levels, allowing for extended outdoor activities with 45-minute burn times. However, as spring arrives in September, the index climbs back to a high of 6, hinting at the return of stronger sunlight. November escalates to a very high level of 10, while December again reaches that familiar extreme UV Index of 13. It’s clear that Porirua’s UV levels demand awareness and safety precautions, especially during the peak summer months. For detailed insights, visit Porirua UV Index.

Maximum UV Index Levels in Porirua for January

The chart shows the monthly maximum UV Index (UVI) for Porirua in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Porirua typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1313974224691013
Data source: Porirua January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Porirua

January in Porirua, New Zealand, shines with a delightful 287 hours of sunshine, setting the tone for a summer filled with bright days ahead. This vibrant month is soon eclipsed by February's even sunnier streak, boasting 297 hours, as the region basks in warmth. However, as autumn settles in, sunshine hours gradually recede, slipping to 278 hours in March and further dwindling to 237 hours in April. The trend continues into the colder months, where May and June see a noticeable decline, with only 207 and 169 hours respectively. Yet, just as winter starts to lift, July brings a modest recovery to 193 hours, paving the way for spring's return. By November, the sun's return is triumphant, with 311 hours of radiant light, eventually peaking in December at an impressive 336 hours. Thus, Porirua's yearly cycle reveals a rhythm of sunshine that ebbs and flows, inviting both locals and visitors to enjoy the interplay between warm summer days and crisp winter evenings.

Monthly Sunshine Duration in Porirua: January Highlighted

The January sunshine duration represents the total number of hours Porirua experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec287h297h278h237h207h169h193h226h250h286h311h336h
Data source: Porirua January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Porirua During January

In Porirua, New Zealand, January stands out as a month filled with promise, boasting a 61% chance of sunny weather—the highest likelihood of all the summer months. This sunny disposition is distinctly favorable when compared to February and March, which see chances drop to 48% and 47%, respectively. As the year progresses, sunny days become less frequent, with April offering a modest 53%, and both May and June further declining to 44% and 34%. The trend indicates a clear shift towards gloomier months, with the winter months of June and July capturing the least sunshine at 34% and 45%. Thus, if you're hoping to soak up the sun, January in Porirua is your best bet for a radiant start to the year!

Percentage of Sunny Days in January in Porirua

The chart illustrates the percentage of sunny days in Porirua throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Porirua experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec61%48%47%53%44%34%45%45%47%33%40%38%
Data source: Porirua January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Porirua in January

In Porirua, New Zealand, January shines brightly with an impressive 14 hours of daylight, setting the stage for the sun-soaked summer days. As the months progress into February and March, daylight gradually diminishes to 13 and then 12 hours, inviting a more mellow atmosphere. By April, the shorter days continue as daylight dips to 10 hours, signaling the approach of autumn. The trend stabilizes through winter, with roughly 9 hours of daylight spanning from May to July, creating a cozy, introspective vibe. However, as spring emerges in August, daylight begins its ascent once more, climbing back to 10 hours and continuing to increase towards November’s 14 hours. Finally, December delights with 15 hours of daylight, wrapping up the year with an abundance of light as the cycle begins anew. This rhythmic ebb and flow of daylight not only marks the passage of time but also beautifully captures the changing seasons in Porirua.

Average Daylight Hours in Porirua for January

The chart illustrates the variation in daylight duration in Porirua throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 44m13h 40m12h 19m10h 57m9h 48m9h 14m9h 31m10h 30m11h 48m13h 11m14h 24m15h 3m
Data source: Porirua daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Porirua

In Porirua, New Zealand, January ushers in an average wind speed of 7.7 m/s (17 mph), setting the stage for a breezy summer. This month marks a peak in wind intensity when compared to the subsequent February, which sees a noticeable decline to 6.6 m/s (15 mph). As autumn approaches, the winds gradually strengthen again, stabilizing between 6.9 m/s and 7.6 m/s through most months. Interestingly, August and September emerge as the most blustery, with speeds reaching 8.1 m/s (18 mph) and 8.9 m/s (20 mph) respectively. The trend suggests that while January initiates a lively breeze, the transition into spring showcases Porirua's propensity for more robust winds, culminating in a dynamic weather pattern throughout the year.

Average January Wind Speed in Porirua

The chart displays monthly wind speed patterns in Porirua, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec7.7 m/s6.66.97.17.47.66.98.18.97.18.37.5
Data source: Porirua January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Porirua Compares to Other Months

Weather in Porirua varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Porirua, focusing on differences in temperature, rainfall, humidity, and UV levels.

In January, the weather features a comfortable temperature range with a minimum of 11°C (52°F) and a maximum of 23°C (73°F), accompanied by relatively low precipitation of 33 mm (1.3 in) over 6 days. February sees a slight increase in the minimum temperature, rising to 12°C (54°F), while the maximum temperature decreases slightly to 22°C (72°F). However, February is noticeably wetter, with precipitation climbing to 69 mm (2.7 in) over the same number of days. Both months maintain a consistent humidity level of 79%. For more details, you can visit Porirua weather in February.

In January, the weather tends to be warmer with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 23°C (73°F), and a total precipitation of 33 mm (1.3 in) over about 6 days. In contrast, March experiences slightly cooler conditions, with average temperatures peaking at 20°C (69°F) and a higher total precipitation of 76 mm (3.0 in) spread across 9 days. Despite this increase in precipitation, both months maintain a similar humidity level of 79%. For more detailed information, you can check Porirua weather in March.

When comparing the weather in January and April, there are notable differences in temperature and precipitation. January experiences a warmer climate with minimum temperatures around 11°C (52°F) and an average of 17°C (62°F), while April sees slightly cooler temperatures, with minimums around 9°C (48°F) and an average of 15°C (59°F). Additionally, January typically receives less rainfall, measuring about 33 mm (1.3 in) over six days, compared to April's significantly higher precipitation of 104 mm (4.1 in) over ten days, resulting in a moister and potentially soggier month. Both months have similar humidity levels, hovering around 79% in January and slightly higher at 80% in April. For more details, check out Porirua weather in April.

In comparing the weather between January and May, January tends to be warmer with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 23°C (73°F). In contrast, May is cooler, with average temperatures only reaching up to 17°C (64°F) and dipping to a low of 7°C (44°F). Additionally, January sees less rainfall, with only 33 mm (1.3 in) over 6 days, while May experiences significantly higher precipitation at 88 mm (3.5 in) across 11 days. Humidity levels are relatively similar, with January at 79% and May slightly higher at 84%. For more detailed information, you can check Porirua weather in May.

In comparing the weather between January and June, January boasts milder temperatures, with a minimum of 11°C (52°F) and an average of 17°C (62°F), peaking at a comfortable 23°C (73°F). In contrast, June experiences cooler conditions, with minimum temperatures dropping to 7°C (45°F) and an average of only 12°C (53°F), culminating at a maximum of 16°C (61°F).

Additionally, January typically sees less rainfall, with total precipitation of 33 mm (1.3 in) over about 6 days, while June is considerably wetter, recording 101 mm (4.0 in) of rain across 12 days, contributing to higher humidity levels of 86%. For more specific insights into the weather conditions one might expect in June, check out Porirua weather in June.

January and July present quite contrasting weather patterns. In January, temperatures typically range from a mild 11°C (52°F) to a pleasant 23°C (73°F), with an average of 17°C (62°F) and only 33 mm (1.3 in) of precipitation over about 6 days, maintaining a comfortable humidity level of 79%. In contrast, July features cooler temperatures, with a minimum of 7°C (44°F) and a maximum of 15°C (59°F), averaging just 11°C (52°F). The month is also notably wetter, experiencing 108 mm (4.3 in) of precipitation spread over 13 days, along with a higher humidity of 86%. For more details on the weather patterns in midwinter, you can explore Porirua weather in July.

January and August present notably different weather conditions. In January, temperatures are generally warmer, with average daily highs reaching up to 23°C (73°F) and a comfortable humidity level of 79%. The month experiences relatively low precipitation, with only 33 mm (1.3 in) over about 6 days. In contrast, August is much cooler, featuring a maximum temperature of only 14°C (57°F) and a lower average temperature of 11°C (52°F). It also sees increased rainfall, totaling 89 mm (3.5 in) over approximately 12 days, contributing to a slightly higher humidity level of 83%. For those interested in the weather specifics, you can find more details here: Porirua weather in August.

When comparing the weather in January and September, noticeable differences emerge. January typically enjoys milder temperatures, with averages around 17°C (62°F) and highs reaching 23°C (73°F), while September is cooler, with average temperatures dropping to 11°C (52°F) and maximums of only 15°C (59°F). Additionally, January has less rainfall, averaging 33 mm (1.3 in) over about 6 rainy days, whereas September experiences significantly more precipitation at 85 mm (3.4 in) across approximately 12 days of rain. Both months exhibit high humidity levels—79% in January and slightly higher at 83% in September—adding to the overall dampness of the latter month. For a detailed look at September weather patterns in the region, refer to Porirua weather in September.

January and October present quite different weather conditions. In January, temperatures are generally warmer, ranging from a minimum of 11°C (52°F) to a maximum of 23°C (73°F), with an average of 17°C (62°F). The month experiences relatively low precipitation at 33 mm (1.3 in) over about 6 days, and humidity stands at 79%. In contrast, October is cooler, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 16°C (61°F), averaging 12°C (55°F). This month sees increased rainfall, totaling 72 mm (2.8 in) spread over 11 days, along with slightly higher humidity at 82%. For more detailed insights, you can explore Porirua weather in October.

When comparing the weather between January and November, January tends to be warmer with average temperatures ranging from 11°C (52°F) to 23°C (73°F), whereas November sees cooler averages between 9°C (49°F) and 18°C (64°F). Additionally, January experiences less rainfall, with about 33 mm (1.3 in) over approximately six days, compared to November's 73 mm (2.9 in) spread across ten days. Humidity levels are also slightly higher in November at 82%, compared to January's 79%. For more detailed information, you can check Porirua weather in November.

When comparing the weather in January and December, we see that January is slightly warmer, with average temperatures ranging from a minimum of 11°C to a maximum of 23°C, whereas December has temperatures from a minimum of 10°C to a maximum of 20°C. Precipitation is significantly lower in January, with only 33 mm over 6 days, compared to December's 101 mm over 11 days. Humidity levels are fairly similar, with January at 79% and December slightly higher at 81%. Overall, January offers drier and warmer conditions than December. For more detailed information, you can visit Porirua weather in December.

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Conclusion: What to Expect From January Weather in Porirua

In January, Porirua boasts pleasantly warm temperatures, with highs reaching up to 23°C and an average of 17°C, making it one of the sunniest months of the year. Unlike the cooler winter months, January brings a vibrant energy, inviting outdoor activities and gatherings. However, it's not without its share of rainfall, with about six days of precipitation, adding a refreshing contrast to the warmth. With humidity levels at 79%, the air feels quite balmy, enhancing the summer experience. For those looking to understand Porirua’s climate throughout the year, be sure to check out Porirua Climate.