January Weather in Portobello, New Zealand

Last updated: August 31, 2025

In Portobello, New Zealand, the average temperature in January is a comfortable 15°C (59°F). Expect a minimum of 7°C (46°F) and a maximum of 26°C (80°F) throughout the month. You'll likely encounter about 90 mm (3.5 in) of precipitation over 12 days, with an average humidity level of 79%, making it a month of mild weather but also occasional rain.

January Temperature in Portobello

In January in Portobello, the average temperature is 15°C (59°F), with maximums reaching 26°C (80°F) and minimums dropping as low as 7°C (46°F). This mild climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates January temperature patterns in Portobello, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portobello, January typically has an average temperature of 15°C (59°F), with highs reaching up to 26°C (80°F) and lows dropping to around 7°C (46°F).

Data source: Temperature data for Portobello generated using information from the Copernicus Climate Change Service.

January Precipitation in Portobello

In Portobello in January, the precipitation amount is 90 mm (3.5 in) spread over 12 days.

January Precipitation Trends in Portobello

The chart displays monthly precipitation patterns in Portobello, 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 Portobello, January typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Portobello

In Portobello in January humidity is 79%. With an average temperature of 15°C (59°F), this humidity feels like a muggy embrace that clings to your skin, making outdoor activities somewhat uncomfortable. Travelers may find themselves frequently seeking shelter or refreshing drinks to combat the warm, damp air, as the moisture in the atmosphere feels particularly heavy, especially during longer excursions.

January Average Humidity in Portobello

This chart illustrates the average monthly humidity levels in Portobello, 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 Portobello is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Portobello

In Portobello in January, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Portobello.

Maximum UV Index Levels in Portobello for January

The chart shows the monthly maximum UV Index (UVI) for Portobello 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 Portobello typically reaches 13, which falls under the extreme exposure category.

Data source: Portobello 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.

How January Weather in Portobello Compares to Other Months

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

This table compares monthly weather conditions in Portobello, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	15°C (59°F)	90 mm (3.5 inches)	79%	extreme
February Weather	15°C (59°F)	91 mm (3.6 inches)	76%	extreme
March Weather	14°C (57°F)	48 mm (1.9 inches)	78%	very high
April Weather	12°C (53°F)	73 mm (2.9 inches)	81%	moderate
May Weather	9°C (49°F)	50 mm (2.0 inches)	84%	moderate
June Weather	7°C (45°F)	43 mm (1.7 inches)	85%	low
July Weather	7°C (44°F)	68 mm (2.7 inches)	85%	low
August Weather	8°C (46°F)	41 mm (1.6 inches)	84%	moderate
September Weather	9°C (48°F)	56 mm (2.2 inches)	83%	moderate
October Weather	10°C (51°F)	76 mm (3.0 inches)	80%	very high
November Weather	12°C (55°F)	84 mm (3.3 inches)	78%	very high
December Weather	14°C (57°F)	88 mm (3.5 inches)	81%	extreme