January Weather in Riverhead, New Zealand

Last updated: August 31, 2025

In January, the average temperature in Riverhead, New Zealand is a pleasant 20°C (68°F), with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 25°C (78°F). Expect around 55 mm (2.2 in) of precipitation spread over 6 days, contributing to an average humidity of 79%. Perfect weather for experiencing the local charm!

January Temperature in Riverhead

In January in Riverhead, the average temperature is 20°C (68°F). Maximums can reach 25°C (78°F), while minimums can drop to as low as 14°C (58°F). This mild climate makes Riverhead an ideal destination for travelers looking to enjoy pleasant weather and outdoor activities.

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

The chart illustrates January temperature patterns in Riverhead, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riverhead, January typically has an average temperature of 20°C (68°F), with highs reaching up to 25°C (78°F) and lows dropping to around 14°C (58°F).

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

January Precipitation in Riverhead

In Riverhead in January, the total precipitation amount is 55 mm (2.2 in) spread over 6 days.

January Precipitation Trends in Riverhead

The chart displays monthly precipitation patterns in Riverhead, 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 Riverhead, January typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 6 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 Riverhead

In Riverhead in January humidity is 79%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that clings to the skin, making outdoor activities feel more strenuous and prompting the need for frequent breaks and hydration while traveling.

January Average Humidity in Riverhead

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

In Riverhead 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 Riverhead, you can check here.

Maximum UV Index Levels in Riverhead for January

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

Data source: Riverhead 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 Riverhead Compares to Other Months

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

This table compares monthly weather conditions in Riverhead, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	55 mm (2.2 inches)	79%	extreme
February Weather	21°C (69°F)	75 mm (2.9 inches)	76%	extreme
March Weather	20°C (67°F)	85 mm (3.3 inches)	74%	very high
April Weather	18°C (64°F)	104 mm (4.1 inches)	74%	high
May Weather	15°C (60°F)	95 mm (3.7 inches)	80%	moderate
June Weather	14°C (57°F)	111 mm (4.4 inches)	82%	moderate
July Weather	13°C (55°F)	120 mm (4.7 inches)	83%	moderate
August Weather	13°C (55°F)	130 mm (5.1 inches)	80%	moderate
September Weather	13°C (56°F)	116 mm (4.6 inches)	80%	high
October Weather	15°C (59°F)	85 mm (3.4 inches)	80%	very high
November Weather	17°C (62°F)	80 mm (3.2 inches)	80%	extreme
December Weather	19°C (66°F)	71 mm (2.8 inches)	78%	extreme