February Weather in Seiyo, Japan

Last updated: August 23, 2025

In February, the average temperature in Seiyo, Japan hovers around 5°C (41°F). Expect chilly moments with minimums dropping to -10°C (15°F), while the warmth can peak at a comfortable 20°C (68°F). This month brings about 97 mm (3.8 in) of precipitation over 11 days, contributing to an average humidity of 70%. Be prepared for a mix of cool and wet days!

February Temperature in Seiyo

In February in Seiyo, the average temperature is 5°C (41°F). Maximums can reach 20°C (68°F) and minimums can be as low as -10°C (15°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

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

The chart illustrates February temperature patterns in Seiyo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seiyo, February typically has an average temperature of 5°C (41°F), with highs reaching up to 20°C (68°F) and lows dropping to around -10°C (15°F).

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

February Precipitation in Seiyo

In Seiyo in February, the total precipitation amount is 97 mm (3.8 in) over the course of 11 days.

February Precipitation Trends in Seiyo

The chart displays monthly precipitation patterns in Seiyo, 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 Seiyo, February typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

February Humidity in Seiyo

In Seiyo in February, humidity is 70%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that penetrates your clothes, making outdoor activities less enjoyable and requiring warm layers to stay comfortable while traveling.

February Average Humidity in Seiyo

This chart illustrates the average monthly humidity levels in Seiyo, 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 Seiyo is approximately 70%, 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 Seiyo

In Seiyo 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 Seiyo, you can refer to this Hourly UV Index in Seiyo.

Maximum UV Index Levels in Seiyo for February

The chart shows the monthly maximum UV Index (UVI) for Seiyo 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 Seiyo typically reaches 6, which falls under the high exposure category.

Data source: Seiyo 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 Seiyo Compares to Other Months

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

This table compares monthly weather conditions in Seiyo, 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 (40°F)	60 mm (2.4 inches)	74%	moderate
February Weather	5°C (41°F)	97 mm (3.8 inches)	70%	high
March Weather	9°C (49°F)	140 mm (5.5 inches)	70%	very high
April Weather	14°C (57°F)	140 mm (5.5 inches)	76%	very high
May Weather	18°C (65°F)	174 mm (6.8 inches)	82%	extreme
June Weather	22°C (71°F)	236 mm (9.3 inches)	86%	extreme
July Weather	25°C (78°F)	409 mm (16.1 inches)	91%	extreme
August Weather	27°C (80°F)	219 mm (8.6 inches)	88%	extreme
September Weather	23°C (74°F)	229 mm (9.0 inches)	85%	extreme
October Weather	18°C (64°F)	213 mm (8.4 inches)	82%	very high
November Weather	11°C (52°F)	62 mm (2.4 inches)	79%	high
December Weather	6°C (43°F)	69 mm (2.7 inches)	77%	moderate