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Lake Kasumigaura

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Lake Kasumigaura Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Lake Kasumigaura year round climate

  • Spring (March–May): 49–64°F on average, mild climate but with relatively heavy rainfall, especially in April and May. Common activities: flower viewing, outings. Recommended clothing: light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): 72–82°F on average, hot and humid with frequent rainfall, especially the most rainfall in August. Common activities: water activities, summer escapes. Recommended clothing: light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): 65–55°F on average, pleasant and comfortable climate with gradually decreasing rainfall. Common activities: maple leaf viewing, outdoor excursions. Recommended clothing: light jacket, long-sleeved shirt.
  • Winter (December–February): 44–42°F on average, cold and dry with less rainfall. Common activities: hot springs, indoor activities. Recommended clothing: warm jacket, sweater, scarf.

Lake Kasumigaura climatological average

Annual average temperature: approx. 61.3°F / Annual rainfall: approx. 1904 mm / Summer humidity: 70%–80% / Rainiest month: August

Lake Kasumigaura monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
40.3°F
40.8
February
42.4°F
56.8
March
49.5°F
125.2
April
59.7°F
169.2
May
64.8°F
209.7
June
72.7°F
272.7
July
81.1°F
228.8
August
82.6°F
388.5
September
78.6°F
173.7
October
65.1°F
113.1
November
55.9°F
99.9
December
44.2°F
26.1

Lake Kasumigaura weather for the next seven days

12/17
Wednesday
Partly Cloudy
56.4°F/43.4°F
12/18
Thursday
Sunny
56.6°F/47.7°F
12/19
Friday
Sunny
55.7°F/44.3°F
12/20
Saturday
Moderate rain
58.5°F/50°F
12/21
Sunday
Partly Cloudy
56.2°F/51.2°F
12/22
Monday
Patchy rain nearby
56°F/47°F
12/23
Tuesday
Sunny
49.5°F/41.9°F

Lake Kasumigaura Frequently Asked Questions and Useful Information for Travel

Where is Lake Kasumigaura located?

Lake Kasumigaura is situated in the southeastern part of Ibaraki Prefecture, Japan. It is the second largest lake in Japan, following Lake Biwa.

What is the size of Lake Kasumigaura?

Lake Kasumigaura covers an expansive area of 220 square kilometers, which accounts for approximately 35% of Ibaraki Prefecture's total area.

Is Lake Kasumigaura the second largest lake in Japan?

Yes, Lake Kasumigaura is indeed the second-largest lake in Japan, located to the northeast of Tokyo.

What are some popular activities at Lake Kasumigaura?

Visitors can enjoy a variety of activities at Lake Kasumigaura, including cycling along the lake shores, fishing, water sports, and bird watching. The surrounding areas also offer scenic spots for relaxation and photography.

Can you recommend activities for independent travel around Lake Kasumigaura?

For independent travelers, renting a bicycle and exploring the lake's scenic paths is highly recommended. You can also visit local fishing ports and enjoy fresh seafood, or explore nearby historical sites and rural landscapes.