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Lake Sagami

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Lake Sagami Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Lake Sagami year round climate

  • Spring (March–May): Average 9–17°C, mild climate but with relatively high rainfall, especially in April. Common activities: Hiking, flower viewing (azaleas, etc.). Recommended clothing: Light jacket, comfortable long pants.
  • Summer (June–August): Average 21.5–27.5°C, hot and humid, with the most rainfall in June. Common activities: Lake activities (boating, fishing), summer retreats. Recommended clothing: Light and breathable clothing, sun hat.
  • Autumn (September–November): Average 12.1–24.8°C, comfortable and pleasant climate, with relatively high rainfall in September. Common activities: Maple viewing, hiking. Recommended clothing: Light jacket, long-sleeved shirt.
  • Winter (December–February): Average 3.3–6°C, cold and dry, with low rainfall. Common activities: Hot springs, indoor activities. Recommended clothing: Warm jacket, hat, scarf, gloves.

Lake Sagami climatological average

Annual average temperature: approx. 15°C / Annual rainfall: approx. 1617 mm / Summer humidity: 70%–80% / Rainiest month: June

Lake Sagami monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
3.3°C
33.3
February
4.6°C
67.8
March
9°C
149
April
14.4°C
164.3
May
17.3°C
183.3
June
21.5°C
270.1
July
26.6°C
139.3
August
27.5°C
140
September
24.8°C
214.6
October
17.1°C
121
November
12.1°C
87.9
December
6°C
46.9

Lake Sagami weather for the next seven days

4/15
Wednesday
Moderate rain
19.4°C/13.5°C
4/16
Thursday
Patchy rain nearby
22.2°C/11.5°C
4/17
Friday
Partly Cloudy
18°C/8.7°C
4/18
Saturday
Sunny
20°C/10°C
4/19
Sunday
Sunny
23.5°C/11.3°C
4/20
Monday
Sunny
21.5°C/13°C
4/21
Tuesday
Sunny
22°C/12.7°C

Lake Sagami Frequently Asked Questions and Useful Information for Travel

Where is Lake Sagami located?

Lake Sagami is a manmade lake situated in Sagamiko, in the northwestern part of Kanagawa Prefecture. It was created by a dam and is surrounded by a vast natural area.

What activities can you enjoy at Lake Sagami?

Lake Sagami offers a variety of activities, including fishing, especially for sweetfish, and enjoying the surrounding natural beauty. It's a popular spot for outdoor recreation.

Is Lake Sagami a natural lake?

No, Lake Sagami is the first manmade lake to be named as such after its creation by a dam in Sagamiko, Kanagawa Prefecture.

Can you fish for sweetfish in the Sagami River system near Lake Sagami?

Yes, the Sagami River system, which is associated with Lake Sagami, is famous for its sweetfish (ayu). The fishing season for sweetfish opens annually on June 1st, attracting many anglers to the area.

What is the climate like around Lake Sagami in Sagamihara?

The area around Lake Sagami, including Sagamihara, has a humid subtropical climate. Winters are cool with light to no snowfall, and summers are warm. The average annual temperature is around 12.6 °C, with significant rainfall, especially in September.