[location-weather id=”2427″]
🇯🇵 Toyama Prefecture Weather Report – Month-by-Month Overview
🌨️ January
Cold and snowy. Toyama City averages 0–6°C. Heavy snowfall is common, especially in mountainous areas like Tateyama. Skies are often overcast, and sunshine is limited.
🌨️ February
Still wintry. Highs reach 4–8°C, with lows near freezing. Snow continues inland, while coastal areas may see sleet. Roads remain icy, and humidity is high.
🌧️ March
Spring begins. Temperatures rise to 8–14°C. Snow melts in lower regions, replaced by rain. Foggy mornings are frequent, and early blossoms appear in parks.
🌸 April
Mild and blooming. Highs reach 14–20°C. Cherry blossoms peak across the prefecture, especially along the Matsukawa River. Rain showers alternate with sunny spells.
🌼 May
Warm and pleasant. Temperatures climb to 18–24°C. Rainfall is light, and skies are mostly clear. Ideal for hiking in the Northern Alps and countryside travel.
🌦️ June
Start of the rainy season. Highs range from 22–27°C. Humidity rises, and afternoon showers are frequent. Rivers swell, and vegetation flourishes.
🌧️ July
Hot and wet. Temperatures reach 26–31°C. Rainfall peaks, and thunderstorms are common. Inland areas feel muggy, while coastal towns offer slight relief.
☀️ August
Still hot. Highs remain between 27–32°C. Rain decreases slightly, and sunshine dominates. Summer festivals and mountain escapes are popular.
🌧️ September
Transition to autumn. Temperatures ease to 23–29°C. Rain returns due to typhoon activity. Winds pick up, and nights begin to cool.
🍂 October
Cooler and clearer. Highs drop to 17–24°C. Rainfall decreases, and autumn colors peak in forests and temple grounds. Crisp air makes it ideal for travel.
🌫️ November
Chilly and damp. Highs hover around 12–18°C, with lows near 7°C. Rain is frequent, and fog blankets valleys. Early frosts appear in higher elevations.
🌨️ December
Winter returns. Temperatures range from 5–10°C. Snowfall resumes, especially inland. Coastal towns see more rain than snow. Festive lights brighten city streets.
Weather in Toyama, Japan: A Month-by-Month AnalysisToyama, Japan, located on the Sea of Japan coast in the Chubu region, experiences a humid subtropical climate (Köppen classification Cfa) characterized by distinct seasonal variations, significant precipitation year-round, and heavy winter snowfall due to the “Sea of Japan winter weather front.” This report provides a detailed month-by-month analysis of Toyama’s weather, including temperature, precipitation, daylight hours, and seasonal characteristics, based on historical climate data and recent observations. The data draws from sources such as Weather Atlas, Weather Spark, and other meteorological records, offering a comprehensive overview to aid in planning visits or understanding local conditions. 
JanuaryJanuary marks the peak of winter in Toyama, with cold temperatures and significant snowfall. The average high temperature is around 2.35°C (36.23°F), while the low dips to -2.75°C (27.05°F), making it one of the coldest months. Precipitation is high, averaging 218 mm (8.6 inches) over approximately 22.9 rainy or snowy days, with snowfall accumulating to about 5.8 inches over a 31-day period. The sea temperature is chilly at 13.2°C (55.8°F), contributing to the coastal chill. Daylight hours are the shortest of the year, averaging 10 hours, with only 5.3 hours of sunshine daily due to frequent cloud cover (72% of the time). Humidity is high at 82%, and the region experiences icy winds, often making conditions feel colder. This month is ideal for winter sports enthusiasts visiting nearby mountain areas but less appealing for general tourism due to the cold and limited daylight. 
FebruaryFebruary continues the cold winter pattern, with temperatures slightly warmer than January. The average high is 3.12°C (37.62°F), and the low is -2.77°C (27.01°F), the coldest monthly low of the year. Precipitation decreases to 174 mm (6.8 inches) over 14–15 rainy or snowy days, with snowfall averaging 3.9 inches. The sea temperature drops to 11.2°C (52.2°F), reinforcing the winter chill. Daylight increases slightly to 10.8 hours, with 5.9 hours of sunshine daily, as cloud cover remains significant (68%). Humidity stays high at 80–81%. February’s weather remains poor for outdoor activities, though the gradual increase in daylight hints at the approaching spring. MarchMarch signals the transition from winter to spring, with temperatures rising noticeably. The average high reaches 7.22°C (45.0°F), and the low is 0.79°C (33.42°F). Precipitation averages 182 mm (7.2 inches) over 14 days, with minimal snowfall (0.6 inches), as rain becomes the dominant form of precipitation. The sea temperature hits its annual low at 10.8°C (51.4°F), keeping coastal areas cool. Daylight extends to 12 hours, with 7.4 hours of sunshine, and cloud cover decreases to 56%. Humidity drops to 76%, making conditions feel less oppressive. March offers a glimpse of milder weather, though it remains generally poor for tourism due to lingering cold and wet conditions. AprilApril brings a significant shift toward spring, with warmer temperatures and blooming cherry blossoms. The average high is 12.65°C (54.77°F), and the low is 5.49°C (41.88°F). Precipitation is at its lowest, averaging 153 mm (6.0 inches) over 10–12 days, with no snowfall. The sea temperature rises to 12.4°C (54.3°F), and daylight hours increase to 13.1 hours, with 9.0 hours of sunshine. Cloud cover continues to decrease (52%), and humidity is at its annual low of 71–73%. April’s tolerable weather, especially in coastal areas like Takaoka, makes it a pleasant time for outdoor activities and cherry blossom viewing. MayMay is one of the best months to visit Toyama, with pleasant temperatures and ample daylight. The average high is 19.3°C (66.74°F), and the low is 10.83°C (51.49°F). Precipitation is moderate at 160–170 mm (6.3–6.7 inches) over 10–13 days, with no snowfall. The sea temperature rises to 15.4°C (59.7°F), fostering milder coastal conditions. Daylight reaches 14.1 hours, with 10.3 hours of sunshine, the highest of the year. Cloud cover is around 55%, and humidity is 70–74%. May’s pleasant weather, especially in Toyama City, makes it ideal for sightseeing and outdoor exploration. JuneJune marks the start of summer, with warm temperatures and increased humidity. The average high is 22.71°C (72.88°F), and the low is 14.82°C (58.68°F). Precipitation rises to 205–206 mm (8.1 inches) over 12 days, reflecting the onset of the rainy season. The sea temperature climbs to 20.3°C (68.5°F), and daylight peaks at 14.6 hours, with 10.0 hours of sunshine. Cloud cover increases to 63%, and humidity rises to 78–80%. June’s tolerable conditions are suitable for coastal activities, though the humidity and rain may deter some visitors. JulyJuly brings Toyama’s summer heat, with high humidity and significant rainfall. The average high is 26.44°C (79.59°F), and the low is 19.87°C (67.77°F). Precipitation peaks at 258–333 mm (10.2–13.1 inches) over 13–20 days, the wettest month of the year. The sea temperature reaches 24.8°C (76.6°F), supporting warm coastal conditions. Daylight is 14.4 hours, with 9.9 hours of sunshine, though cloud cover is high at 64%. Humidity is 81–83%, making conditions feel oppressive. July is less ideal for tourism due to heat and rain but suitable for indoor activities or brief coastal visits. AugustAugust is Toyama’s warmest month, with average highs of 28.1–30°C (82.58–86°F) and lows of 21.43–22°C (70.57–71.6°F). Precipitation is high at 183–267 mm (7.2–10.5 inches) over 12–17 days. The sea temperature peaks at 27°C (80.6°F), ideal for swimming. Daylight is 13.5 hours, with 9.9 hours of sunshine, and cloud cover is 55%. Humidity remains high at 80–81%, contributing to muggy conditions. Recent posts on X noted temperatures reaching 35–38°C in early August 2025, indicating potential for extreme heat. August is the best time for hot-weather activities like beach visits but requires preparation for heat and humidity. SeptemberSeptember transitions to autumn, with cooling temperatures and high rainfall. The average high is 23.81–26°C (74.86–78.8°F), and the low is 17.7–18°C (63.8–64.4°F). Precipitation averages 223–278 mm (8.8–10.9 inches) over 12–13 days. The sea temperature is 25.5°C (77.9°F), still warm for coastal activities. Daylight decreases to 12.4 hours, with 8.3 hours of sunshine, and cloud cover is 53%. Humidity peaks at 83.54%, the highest of the year. September’s weather is generally unpleasant due to rain and humidity but offers mild temperatures for sightseeing. OctoberOctober is another favorable month for visiting, with pleasant temperatures and clearer skies. The average high is 17.83–20°C (64.09–68°F), and the low is 11.5–12°C (52.8–53.6°F). Precipitation averages 185–195 mm (7.3–7.7 inches) over 11–12 days. The sea temperature is 21.7°C (71.1°F), and daylight is 11.3 hours, with 7.5 hours of sunshine. Cloud cover is at its lowest (46%), making it the clearest month. Humidity is 78–81%. October’s mild weather and vibrant autumn foliage make it ideal for outdoor activities. NovemberNovember brings cooler autumn weather, with average highs of 9.1–14°C (48.4–57.2°F) and lows of 5.7–7°C (42.2–44.6°F). Precipitation is 174–190 mm (6.8–7.5 inches) over 13–15 days, with minimal snowfall. The sea temperature drops to 18.6°C (65.5°F), and daylight shrinks to 10.2 hours, with 6.2 hours of sunshine. Cloud cover is 50%, and humidity is 76–81%. November’s cooler conditions are less appealing but suitable for autumnal exploration. DecemberDecember ushers in winter, with cold temperatures and heavy snowfall. The average high is 3.2–7°C (37.8–44.6°F), and the low is 0–1°C (32–33.8°F). Precipitation averages 221–257 mm (8.7–10.1 inches) over 17–22 days, with snowfall around 2.1 inches. The sea temperature is 15.2°C (59.4°F), and daylight is 9.7 hours, with 5.3 hours of sunshine. Cloud cover increases to 62%, and humidity is 81–82%. December’s snowy charm attracts winter sports enthusiasts but is less ideal for general tourism. ConclusionToyama’s climate offers a dynamic range of conditions, from snowy winters to warm, humid summers. The best times to visit are May, June, and October, when temperatures are pleasant (20–26°C) and rainfall is moderate. August is ideal for hot-weather activities like swimming, despite high humidity and rain. Winter months (December–February) are cold and snowy, appealing to winter sports lovers but less suitable for general tourism. Toyama’s weather, influenced by its coastal location and surrounding mountains, requires preparation for precipitation year-round and seasonal temperature swings. For precise planning, check local forecasts closer to your visit, as extreme temperatures (e.g., 35–38°C in August 2025) have been noted recently. 
