January Weather in Eltham, New Zealand

Last updated: August 31, 2025

In January, the average temperature in Eltham, New Zealand is a pleasant 18°C (64°F), making it a great time to explore. Expect minimum temperatures around 7°C (45°F) and highs that can reach up to 27°C (81°F). While you're out and about, be prepared for some rain, as the region experiences about 71 mm (2.8 in) of precipitation over approximately 8 days. The air tends to be quite humid, with an average humidity level of 79%.

January Temperature in Eltham

In January in Eltham, the average temperature is 18°C (64°F). Maximum temperatures can reach 27°C (81°F), while the minimum can drop to as low as 7°C (45°F). This mild climate makes it a perfect time for outdoor activities and exploring the local attractions.

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

The chart illustrates January temperature patterns in Eltham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Eltham, January typically has an average temperature of 18°C (64°F), with highs reaching up to 27°C (81°F) and lows dropping to around 7°C (45°F).

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

January Precipitation in Eltham

In Eltham in January, the precipitation amount is 71 mm (2.8 in) over the course of 8 days.

January Precipitation Trends in Eltham

The chart displays monthly precipitation patterns in Eltham, 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 Eltham, January typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 8 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 Eltham

In Eltham in January, humidity is 79%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities more challenging but also creates a lush, vibrant atmosphere that's perfect for exploring local culture and scenery.

January Average Humidity in Eltham

This chart illustrates the average monthly humidity levels in Eltham, 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 Eltham 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 Eltham

In Eltham in January, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Eltham, you can check here.

Maximum UV Index Levels in Eltham for January

The chart shows the monthly maximum UV Index (UVI) for Eltham 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 Eltham typically reaches 14, which falls under the extreme exposure category.

Data source: Eltham 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 Eltham Compares to Other Months

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

This table compares monthly weather conditions in Eltham, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (64°F)	71 mm (2.8 inches)	79%	extreme
February Weather	18°C (65°F)	65 mm (2.5 inches)	77%	extreme
March Weather	17°C (62°F)	106 mm (4.2 inches)	75%	very high
April Weather	14°C (58°F)	149 mm (5.9 inches)	76%	high
May Weather	12°C (55°F)	100 mm (3.9 inches)	81%	moderate
June Weather	10°C (51°F)	94 mm (3.7 inches)	83%	low
July Weather	10°C (50°F)	144 mm (5.7 inches)	84%	moderate
August Weather	10°C (50°F)	132 mm (5.2 inches)	81%	moderate
September Weather	11°C (52°F)	134 mm (5.3 inches)	80%	high
October Weather	13°C (55°F)	102 mm (4.0 inches)	82%	very high
November Weather	15°C (59°F)	97 mm (3.8 inches)	82%	extreme
December Weather	17°C (63°F)	137 mm (5.4 inches)	80%	extreme