Planning your day in Hirado or just curious about the weather? In this section, you will find the most up-to-date information on weather conditions and detailed forecasts.
Hirado
Current Weather
Overview
The climate in Hirado can be described as temperate marine, with four distinct seasons. The city experiences significant temperature fluctuations throughout the year, allowing tourists to enjoy a variety of weather conditions depending on the timing of their visit.
Winters in Hirado (December–February) are relatively mild, with average temperatures around 7–9°C, although lows can drop to 6°C. Summers (June–August) are warm and humid, with average temperatures reaching 26–27.5°C and highs approaching 30°C. Spring and autumn are transitional seasons with comfortable temperatures, perfect for walks and sightseeing.
As for precipitation, the rainiest period is summer, especially July, which sees the highest rainfall (10 mm) and the greatest number of rainy days (19 days). June and August are also characterized by increased precipitation and rainy days. In contrast, the winter months are the driest in terms of volume, although the number of rainy days remains moderate. Overall, the weather in Hirado offers plenty of variety, and the best time to visit will depend on your preferences regarding temperature and humidity.
Temperature
The climate in Hirado is characterized by notable seasonal temperature changes. The hottest month of the year is August, when the average temperature reaches 27.5°C, and daytime highs can rise to 29.4°C. August nights are also warm, with an average minimum temperature of around 25.6°C. Conversely, the coldest period is in January, with an average temperature of 7.8°C. In January, average minimum temperatures drop to 6.0°C, and maximums rarely exceed 9.6°C.
Summer months in Hirado, especially July and August, bring real heat. Average temperatures in June are around 22.1°C, gradually rising to 26.0°C in July and peaking in August. Daytime and nighttime temperatures during the summer season differ only slightly, indicating consistently warm and sometimes sweltering weather. For example, in July, the difference between the average maximum (27.7°C) and minimum (24.4°C) temperature is only about 3 degrees, which is typical for a humid, warm climate.
Winter in Hirado is relatively mild. From December to February, average temperatures range from 7.8°C to 9.1°C. Night frosts are uncommon, as minimum temperatures drop to 6.0°C in the coldest month, January. Daytime temperatures in winter most often stay around 9–11°C. Temperature fluctuations between day and night in winter are also small, usually within 3–4°C, providing consistently cool but not freezing weather. The transitional seasons, spring and autumn, offer comfortable moderate temperatures, smoothly shifting from winter's chill to summer's warmth and back again.
Average monthly temperature
Precipitation
In Hirado, precipitation occurs mainly in the form of rain throughout the year, as average temperatures remain above freezing even in the winter months. However, the intensity and frequency vary significantly, creating a distinct wet season in summer and a drier period during the rest of the year.
The summer months, from June to September, are the wettest in Hirado. During this time, rain is most frequent and brings the highest amount of precipitation. The absolute peak is in July, when an average of 10 mm of precipitation falls, and the number of rainy days reaches 19. June and August are also characterized by significant rainfall (8 mm each) and a high number of rainy days (14 and 15, respectively). September concludes this wet period with 6 mm of precipitation and about 13 rainy days.
The period from October to February features notably less precipitation. December is considered the driest month, with only 2 mm of rainfall, although there are about 9 rainy days. November is notable for having the fewest rainy days—an average of 8—with a total precipitation volume of 3 mm. The remaining months of this period (October, January, February) bring about 3–4 mm of precipitation. The spring months—March (4 mm, 12 days), April (4 mm, 9 days), and May (5 mm, 12 days)—represent a transitional stage with a gradual increase in both the amount of precipitation and the frequency of rain before the summer peak.
Average monthly precipitation
Packing Tips
When planning a trip to Hirado, it is important to consider the changeable weather and be prepared for various conditions throughout the year. The key is layering, which will keep you comfortable during temperature shifts. Regardless of the season, be sure to bring comfortable shoes for walking, as there is much to see in Hirado. Given that rainy days occur quite frequently year-round (from 8 to 19 days per month), a light, foldable umbrella or a waterproof jacket will be your faithful companions.
During the cooler months, from approximately November to April, when average temperatures range from 7.8°C to 15.2°C, you should pack warm clothing. We recommend bringing sweaters, fleeces, and a mid-season or even a winter jacket for the period from December to February (average temperature around 7–9°C). A scarf and hat won't go amiss, especially on the coldest days. In the shoulder seasons, such as March and April, when temperatures gradually rise, lighter jackets and cardigans that can be easily removed are suitable. Don't forget that rain is possible during these months as well.
In the warmer season, from May to October, the weather in Hirado becomes significantly warmer, peaking in July and August with average temperatures of 26–27.5°C. For this period, choose light, breathable clothing made from natural fabrics: T-shirts, shorts, and sundresses. Be sure to pack sunscreen, a hat, and sunglasses for UV protection. Despite the warmth, summer (especially June and July) is characterized by the highest rainfall and number of rainy days, so a light waterproof windbreaker or umbrella will still be useful.
Average monthly wind speed (speed and direction)
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