nomadseason

December Weather in Portobello, New Zealand

Last updated: August 31, 2025

In Portobello, New Zealand, the average temperature in December hovers around 14°C (57°F), with an enticing range that dips to a crisp 6°C (43°F) and peaks at a warm 24°C (76°F). Expect precipitation totaling 88 mm (3.5 in) over about 14 days, while the air remains comfortably humid with an average of 81%. Get ready for varied weather as you explore!

December Temperature in Portobello

In December in Portobello, the average temperature is 14°C (57°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop as low as 6°C (43°F). This mild climate makes Portobello an ideal destination for travelers seeking comfortable outdoor activities.

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

The chart illustrates December 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, December typically has an average temperature of 14°C (57°F), with highs reaching up to 24°C (76°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec595857534945444648515457
Data source: Temperature data for Portobello 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.

December Precipitation in Portobello

In Portobello in December, the precipitation amount is 88 mm (3.5 in) over the course of 14 days.

December Precipitation Trends in Portobello

The chart displays monthly precipitation patterns in Portobello, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Portobello, December typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec909148735043684156768488
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Portobello

In Portobello in December, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.

December Average Humidity in Portobello

This chart illustrates the average monthly humidity levels in Portobello, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Portobello is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%76%78%81%84%85%85%84%83%80%78%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Portobello

In Portobello in December, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Portobello.

Maximum UV Index Levels in Portobello for December

The chart shows the monthly maximum UV Index (UVI) for Portobello in December, 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 December, the maximum UV index in Portobello typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1311853223581012
Data source: Portobello December 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 December 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 December’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 December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)90 mm (3.5 inches)79%extreme
February Weather15°C (59°F)91 mm (3.6 inches)76%extreme
March Weather14°C (57°F)48 mm (1.9 inches)78%very high
April Weather12°C (53°F)73 mm (2.9 inches)81%moderate
May Weather9°C (49°F)50 mm (2.0 inches)84%moderate
June Weather7°C (45°F)43 mm (1.7 inches)85%low
July Weather7°C (44°F)68 mm (2.7 inches)85%low
August Weather8°C (46°F)41 mm (1.6 inches)84%moderate
September Weather9°C (48°F)56 mm (2.2 inches)83%moderate
October Weather10°C (51°F)76 mm (3.0 inches)80%very high
November Weather12°C (55°F)84 mm (3.3 inches)78%very high
December Weather14°C (57°F)88 mm (3.5 inches)81%extreme

Compare Portobello's Climate with Cities Worldwide