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December Weather in Sefton, New Zealand

Last updated: August 31, 2025

In December, the average temperature in Sefton, New Zealand hovers around 15°C (59°F). While you may experience a minimum of 8°C (47°F), the mercury can rise to a pleasant 24°C (76°F). Be prepared for some rain, as 104 mm (4.1 in) of precipitation is expected over 13 days, contributing to an average humidity of 75%.

December Temperature in Sefton

In December in Sefton, the average temperature is 15°C (59°F). Maximum temperatures can reach up to 24°C (76°F), while minimums can drop to as low as 8°C (47°F). It's a pleasant time to visit, so pack accordingly and enjoy the mild weather!

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

The chart illustrates December temperature patterns in Sefton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sefton, December typically has an average temperature of 15°C (59°F), with highs reaching up to 24°C (76°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec616159555247464749525659
Data source: Temperature data for Sefton generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Sefton

In Sefton in December, the precipitation amount is 104 mm (4.1 in) over the course of 13 days.

December Precipitation Trends in Sefton

The chart displays monthly precipitation patterns in Sefton, 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 Sefton, December typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec5755718573797755627786104
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sefton

In Sefton in December, humidity is 75%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making it feel more oppressive than refreshing, which can be a challenge for travelers seeking comfort while exploring the area.

December Average Humidity in Sefton

This chart illustrates the average monthly humidity levels in Sefton, 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 Sefton is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%72%77%77%82%84%85%83%82%79%77%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sefton

In Sefton 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 Sefton.

Maximum UV Index Levels in Sefton for December

The chart shows the monthly maximum UV Index (UVI) for Sefton 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 Sefton typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1312964224691012
Data source: Sefton 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 Sefton Compares to Other Months

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

This table compares monthly weather conditions in Sefton, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (62°F)57 mm (2.2 inches)72%extreme
February Weather16°C (62°F)55 mm (2.2 inches)72%extreme
March Weather15°C (59°F)71 mm (2.8 inches)77%very high
April Weather13°C (55°F)85 mm (3.4 inches)77%high
May Weather11°C (52°F)73 mm (2.9 inches)82%moderate
June Weather9°C (48°F)79 mm (3.1 inches)84%low
July Weather8°C (46°F)77 mm (3.0 inches)85%low
August Weather8°C (47°F)55 mm (2.2 inches)82%moderate
September Weather10°C (49°F)62 mm (2.4 inches)82%high
October Weather11°C (52°F)77 mm (3.0 inches)79%very high
November Weather13°C (56°F)86 mm (3.4 inches)77%very high
December Weather15°C (59°F)104 mm (4.1 inches)75%extreme

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