January Weather in Otaki, Japan

Last updated: August 23, 2025

In January, the average temperature in Otaki, Japan hovers around -2°C (29°F), with possible extremes ranging from a chilly -18°C (1°F) to a mild 11°C (51°F). Expect 95 mm (3.7 in) of precipitation over about 14 days, paired with an average humidity of 82%. Be prepared for a moist and brisk winter atmosphere!

January Temperature in Otaki

In January in Otaki, the average temperature is -2°C (29°F), with maximums reaching 11°C (51°F) and minimums plummeting to as low as -18°C (1°F). Be prepared for a range of chilly conditions if you plan to travel during this time!

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

The chart illustrates January temperature patterns in Otaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Otaki, January typically has an average temperature of -2°C (29°F), with highs reaching up to 11°C (51°F) and lows dropping to around -18°C (1°F).

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

January Precipitation in Otaki

In Otaki in January, the total precipitation amount is 95 mm (3.7 in), spread over 14 days.

January Precipitation Trends in Otaki

The chart displays monthly precipitation patterns in Otaki, 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 Otaki, January typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 14 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 Otaki

In Otaki in January, humidity is 82%. With an average temperature of -2°C (29°F), this humidity feels like a frigid chill that seeps into your bones, making travel quite uncomfortable and forcing you to bundle up tightly to ward off the damp cold that lingers in the air.

January Average Humidity in Otaki

This chart illustrates the average monthly humidity levels in Otaki, 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 Otaki is approximately 82%, 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 Otaki

In Otaki in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Otaki for better planning.

Maximum UV Index Levels in Otaki for January

The chart shows the monthly maximum UV Index (UVI) for Otaki 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 Otaki typically reaches 4, which falls under the moderate exposure category.

Data source: Otaki 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 Otaki Compares to Other Months

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

This table compares monthly weather conditions in Otaki, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	95 mm (3.7 inches)	82%	moderate
February Weather	-1°C (30°F)	109 mm (4.3 inches)	79%	high
March Weather	5°C (40°F)	176 mm (6.9 inches)	74%	very high
April Weather	9°C (48°F)	222 mm (8.8 inches)	76%	very high
May Weather	14°C (58°F)	228 mm (9.0 inches)	83%	extreme
June Weather	18°C (64°F)	239 mm (9.4 inches)	87%	extreme
July Weather	22°C (71°F)	516 mm (20.3 inches)	93%	extreme
August Weather	23°C (74°F)	295 mm (11.6 inches)	91%	extreme
September Weather	19°C (67°F)	261 mm (10.3 inches)	87%	very high
October Weather	14°C (57°F)	246 mm (9.7 inches)	85%	high
November Weather	7°C (45°F)	91 mm (3.6 inches)	83%	moderate
December Weather	2°C (35°F)	107 mm (4.2 inches)	83%	moderate