Lake Sagami Lake

Reservoir in Kanagawa Prefecture supplying water and recreation

West of Tokyo in Kanagawa Prefecture, Lake Sagami functions as a recreational reservoir with boating, angling and lakeside parks; day‑trippers from the capital use it for outdoor escape.

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"Let's Boating" @ Lake Sagami @ Sagamiko (9876694745).jpg
Boat Ride on Lake Sagami @ Sagamiko (13973172429).jpg
Boat Ride on Lake Sagami @ Sagamiko (13973172699).jpg
Boat Ride on Lake Sagami @ Sagamiko (13973179789).jpg
Boat Ride on Lake Sagami @ Sagamiko (13973180329).jpg
Boat Ride on Lake Sagami @ Sagamiko (13973183809).jpg
Boat Ride on Lake Sagami @ Sagamiko (13973184069).jpg
Boat Ride on Lake Sagami @ Sagamiko (13973184079).jpg
Boat Ride on Lake Sagami @ Sagamiko (13973184599).jpg
Boat Ride on Lake Sagami @ Sagamiko (13973186327).jpg

Lake Sagami at a Glance#

About Lake Sagami#

Lake Sagami (Sagami-ko) is a reservoir in Kanagawa Prefecture, Japan, located near the city of Sagamihara. It functions as a managed water body used for supply and recreational activities in the region.

The lakeshore hosts parkland and leisure facilities used for boating, fishing and seasonal events; the reservoir is a local recreational destination for Kanagawa residents. Visitor services are concentrated at a few developed areas rather than spread evenly around the shore.

The waterbody was created and modified by dam and reservoir works in the 20th century to serve water-supply and flood-control needs for the surrounding region. Over time recreational use has become an established secondary function.

Geographically it lies within inland Kanagawa Prefecture, near Sagamihara and within commuting distance of the greater Tokyo metropolitan area.

  • Uses: Managed for both water supply and recreation, with nearby parkland and leisure facilities on the reservoir’s shores.

How to Get to Lake Sagami#

Lake Sagami (Sagami-ko) is served by JR: take the JR Chūō Line to Sagamiko Station (相模湖駅) and then walk along the lakeshore roads to the reservoir (about a 10-20 minute walk from the station depending on your destination around the lake). By car, the lake is reached from the Sagamihara area via Route 413 (the road runs close to the lake) and local prefectural roads; there is roadside parking at several park/recreation spots around the reservoir.

Best Time to Visit Lake Sagami#

For Lake Sagami, aim for spring or autumn (March-May or September-November) for the most pleasant weather and scenic colour.

Spring (cherry blossoms & mild weather)
March-May · ~8-20°C
Pleasant temperatures and spring blooms make lakeside walks appealing; occasional rain in early spring.
Autumn (foliage and crisp days)
September-November · ~10-20°C
Cooling temperatures and autumn colours around the lake are attractive for photography and strolling.
Summer (hot and humid)
June-August · ~20-30°C
Warm to hot and humid - busy with weekend visitors from nearby urban areas.

Weather & Climate near Lake Sagami#

Climate

Lake Sagami's climate is classified as Humid Subtropical - Humid Subtropical climate with warm summers (peaking in August) and cold winters (coldest in January). Temperatures range from -2°C to 29°C. Abundant rainfall (1443 mm/year), wettest in September.

Air Quality: AQI 52 Moderate
Best Time to Visit
AugustJulyDecember
Temperature & Rainfall
Temperature Range
37°
Warmest Month
-7°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Acceptable -2° - 8° 0° 43 mm some cloud 77% 3.3 m/s 0.4 low 9.9h
February Acceptable -2° - 8° 3° 54 mm partly cloudy 77% 3.6 m/s 0.6 moderate 10.8h
March Good 2° - 11° 4° 91 mm partly cloudy 77% 3.6 m/s 0.9 moderate 11.8h
April Good 8° - 17° 12° 109 mm partly cloudy 78% 3.3 m/s 1.2 high 13.0h
May Good 12° - 21° 16° 134 mm partly cloudy 79% 3.3 m/s 1.4 high 13.9h
June Good 16° - 23° 20° 190 mm overcast 83% 2.7 m/s 1.4 high 14.4h
July Very Good 20° - 27° 23° 148 mm overcast 84% 3.0 m/s 1.6 very high 14.1h
August Very Good 21° - 29° 25° 191 mm partly cloudy 82% 3.1 m/s 1.7 very high 13.3h
September Good 18° - 24° 21° 202 mm overcast 84% 2.8 m/s 1.2 high 12.3h
October Good 12° - 19° 16° 163 mm partly cloudy 84% 2.6 m/s 0.8 moderate 11.2h
November Good 6° - 15° 10° 76 mm partly cloudy 82% 2.6 m/s 0.5 low 10.2h
December Good 0° - 10° 3° 42 mm some cloud 79% 2.6 m/s 0.3 low 9.7h

Nearby Attractions to Lake Sagami#