February Weather in Nagaoka, Japan

Last updated: August 23, 2025

In Nagaoka, Japan, the average temperature in February hovers around 3°C (38°F). However, be prepared for fluctuations, as the temperature can dip to a chilly -7°C (20°F) or rise to a mild 18°C (64°F). This period sees an average precipitation of 138 mm (5.4 in) spread over 22 days, contributing to an impressive average humidity of 86%.

February Temperature in Nagaoka

In February in Nagaoka, the average temperature is 3°C (38°F), with maximums reaching 18°C (64°F) and minimums dropping as low as -7°C (20°F). Travelers should be prepared for a chilly climate, with potential for significant temperature variation throughout the day.

February Weather in Nagaoka: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Nagaoka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagaoka, February typically has an average temperature of 3°C (38°F), with highs reaching up to 18°C (64°F) and lows dropping to around -7°C (20°F).

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

February Precipitation in Nagaoka

In Nagaoka in February, the total precipitation amount reaches 138 mm (5.4 in) over the course of 22 days.

February Precipitation Trends in Nagaoka

The chart displays monthly precipitation patterns in Nagaoka, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Nagaoka, February typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 22 days.

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

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Millimeters (mm) Inches (in)

February Humidity in Nagaoka

In Nagaoka in February humidity is 86%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps through your layers, making traveling uncomfortable as breath clouds visibly in the crisp air.

February Average Humidity in Nagaoka

This chart illustrates the average monthly humidity levels in Nagaoka, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Nagaoka is approximately 86%, offering insight into how humid the weather typically is during this month.

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

February UV Index in Nagaoka

In Nagaoka in February, 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 Nagaoka for better planning.

Maximum UV Index Levels in Nagaoka for February

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

Data source: Nagaoka February 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 February Weather in Nagaoka Compares to Other Months

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

This table compares monthly weather conditions in Nagaoka, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (37°F)	165 mm (6.5 inches)	88%	moderate
February Weather	3°C (38°F)	138 mm (5.4 inches)	86%	moderate
March Weather	7°C (45°F)	130 mm (5.1 inches)	81%	high
April Weather	12°C (53°F)	114 mm (4.5 inches)	78%	very high
May Weather	18°C (64°F)	110 mm (4.3 inches)	81%	very high
June Weather	21°C (71°F)	108 mm (4.3 inches)	88%	very high
July Weather	26°C (79°F)	283 mm (11.2 inches)	92%	extreme
August Weather	27°C (82°F)	186 mm (7.3 inches)	92%	extreme
September Weather	23°C (73°F)	151 mm (5.9 inches)	89%	very high
October Weather	17°C (63°F)	158 mm (6.2 inches)	87%	high
November Weather	11°C (52°F)	139 mm (5.5 inches)	85%	moderate
December Weather	5°C (41°F)	204 mm (8.0 inches)	86%	moderate