夏休み(なつやすみ)

holiday traffic congestion caused by people travelling to their hometowns en masse

sausage (frankfurt)

curry and rice

corn;  maize

beach volleyball

fried soba

grilled oyster

grilled squid

cold thin noodles

unpasteurized beer;  draft beer;  draught beer

boxed lunch bought at a station (often a local specialty)

high-school baseball

cicada;  locust

humid;  sultry

diary with illustrations

student preparing for or taking examinations

yukata (light cotton kimono worn in the summer or used as a bathrobe)

club activities

barley tea

shaved ice, Sno-cone;  snow cone

visit to a grave

homecoming;  returning home

bullet train

coaching school;  cramming school

short course;  training

Hokkaido (northernmost of the four main islands of Japan)

Okinawa (one of the Japanese Ryukyu islands)

mountain climbing

amusement park

beach hut;  beachside clubhouse

to swim

hot (weather, etc.);  warm

ice cream

museum

aquarium

ghost story

spa;  hot spring;  onsen

swimsuit

lodging together;  training camp;  boarding house

camp, camping

barbecue;  BBQ

campfire

sea bathing;  seawater bath

watermelon splitting game

watermelon

test of courage

Bon Odori、Bon Festival

summer festival

swimming pool

fireworks

sea;  beach

outdoors school

seaside school

summer vacation;  summer holiday