February Weather in Nagaoka, Japan

Last updated: August 23, 2025

In February, the average temperature in Nagaoka, Japan hovers around 4°C (40°F). Expect variations, with minimums dipping to a chilly -8°C (18°F) and maximums reaching a comfortable 19°C (67°F). This month sees an average precipitation of 62 mm (2.5 in) spread over about 9 days, paired with a noteworthy average humidity of 79%.

February Temperature in Nagaoka

In February in Nagaoka, the average temperature is 4°C (40°F). Maximum temperatures can reach 19°C (67°F), while the minimum can drop as low as -8°C (18°F). Be prepared for a mix of chilly days and milder spells, making it essential to pack layers for your travel.

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 4°C (40°F), with highs reaching up to 19°C (67°F) and lows dropping to around -8°C (18°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 precipitation amount is 62 mm (2.5 in) over a span of 9 days, indicating a relatively wet period.

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 62 mm (2.5 inches) of precipitation spread over approximately 9 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 79%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that wraps around you, making outdoor activities uncomfortable and leaving you longing for warmth as your breath hangs in the 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 79%, 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 is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Nagaoka, you can refer to this Hourly UV Index in Nagaoka.

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 6, which falls under the high 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	4°C (39°F)	56 mm (2.2 inches)	82%	moderate
February Weather	4°C (40°F)	62 mm (2.5 inches)	79%	high
March Weather	9°C (48°F)	125 mm (4.9 inches)	74%	very high
April Weather	13°C (56°F)	157 mm (6.2 inches)	76%	very high
May Weather	18°C (66°F)	154 mm (6.1 inches)	83%	extreme
June Weather	22°C (72°F)	161 mm (6.3 inches)	87%	extreme
July Weather	26°C (79°F)	324 mm (12.7 inches)	93%	extreme
August Weather	28°C (82°F)	228 mm (9.0 inches)	91%	extreme
September Weather	23°C (75°F)	172 mm (6.8 inches)	87%	very high
October Weather	18°C (64°F)	246 mm (9.7 inches)	85%	high
November Weather	12°C (53°F)	47 mm (1.8 inches)	83%	moderate
December Weather	6°C (43°F)	66 mm (2.6 inches)	83%	moderate