December Weather in Brightwater, New Zealand

Last updated: August 31, 2025

In December, the average temperature in Brightwater, New Zealand is a pleasant 15°C (59°F). You'll experience cool nights with minimums dropping to 2°C (36°F), while daytime highs can reach up to 27°C (80°F). Prepare for a fairly wet month, with around 153 mm (6.0 in) of precipitation expected over 14 days. Additionally, the average humidity is quite high at 81%, ensuring a lush, vibrant environment.

December Temperature in Brightwater

In December in Brightwater, the average temperature is 15°C (59°F). The maximum can reach 27°C (80°F) and the minimum can be as low as 2°C (36°F). It's a great time to visit Brightwater, as you can enjoy mild weather while exploring its attractions.

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

The chart illustrates December temperature patterns in Brightwater, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brightwater, December typically has an average temperature of 15°C (59°F), with highs reaching up to 27°C (80°F) and lows dropping to around 2°C (36°F).

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

December Precipitation in Brightwater

In Brightwater in December, the total precipitation amount is 153 mm (6.0 in) spread over 14 days.

December Precipitation Trends in Brightwater

The chart displays monthly precipitation patterns in Brightwater, 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 Brightwater, December typically receives around 153 mm (6.0 inches) of precipitation spread over approximately 14 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Brightwater

In Brightwater in December humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.

December Average Humidity in Brightwater

This chart illustrates the average monthly humidity levels in Brightwater, 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 Brightwater is approximately 81%, offering insight into how humid the weather typically is during this month.

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

December UV Index in Brightwater

In Brightwater in December, 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 Brightwater.

Maximum UV Index Levels in Brightwater for December

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

Data source: Brightwater 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 Brightwater Compares to Other Months

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

This table compares monthly weather conditions in Brightwater, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (61°F)	76 mm (3.0 inches)	79%	extreme
February Weather	16°C (60°F)	77 mm (3.0 inches)	79%	extreme
March Weather	14°C (57°F)	115 mm (4.5 inches)	79%	very high
April Weather	11°C (52°F)	126 mm (5.0 inches)	80%	high
May Weather	8°C (48°F)	125 mm (4.9 inches)	84%	moderate
June Weather	6°C (43°F)	65 mm (2.6 inches)	86%	low
July Weather	5°C (42°F)	158 mm (6.2 inches)	86%	low
August Weather	7°C (44°F)	112 mm (4.4 inches)	83%	moderate
September Weather	8°C (46°F)	126 mm (5.0 inches)	83%	high
October Weather	10°C (50°F)	116 mm (4.6 inches)	82%	very high
November Weather	12°C (55°F)	116 mm (4.6 inches)	82%	extreme
December Weather	15°C (59°F)	153 mm (6.0 inches)	81%	extreme