Oiso Long Beach, located about an hour from central Tokyo in Oiso, Kanagawa, opens for its 2026 summer season on July 4 (Saturday) and runs through September 13 (Sunday) — a total of 72 days. The pool resort stretches along approximately 1 km of Sagami Bay coastline and has become a popular "microtourism" destination for those seeking a resort experience close to the city.
New for 2026: Mist Cooling Spots
In response to intensifying summer heat in recent years, Oiso Long Beach is installing new mist cooling stations across the grounds this season. The mist system provides relief between swims, helping guests stay comfortable on the hottest days.
Shaded rest areas with good airflow are also maintained throughout the resort, and regular hydration reminders are broadcast over the PA system. Lifeguard patrols have been strengthened as part of the ongoing commitment to guest safety.
Water Safety & Lifesaving Workshop — July 4
A water safety event is scheduled for opening day, July 4. The program features two sessions held at the competitive pool:
Session 1 — Water Safety Class — 10:00 AM to 11:30 PM
A hands-on class led by former Olympic medalist 松田丈志 (Takeshi Matsuda), covering knowledge and practices for staying safe around the water.
Session 2 — Lifesaving Experience — 2:00 PM to 3:30 PM
A practical rescue and lifesaving experience led by 西山俊 (Shun Nishiyama), one of Japan's only professional lifesavers.
- Venue: Competitive Pool, Oiso Long Beach
- Fee: Free (both sessions)
- Eligible participants: Parent-child pairs (adult + elementary school student) — limited to 20 pairs
- Reservations: Required in advance via the official website
Pool Areas
Oiso Long Beach features 9 pool areas covering a range of ages and preferences.
1. Water Slide (Tube Slides) — 2 Courses
Two thrilling tube slides launching from a platform 13.2 m above the ground, with a view over the beach.
- Course A: 139 m long, 15 m drop
- Course B: 140 m long, 15 m drop
- Landing pool: 13.3 m × 9.1 m
- Restriction: Not available to guests under 120 cm tall or under 6 years old
2. Wave Pool
A wide pool that replicates ocean conditions, with waves ranging from 0.3 to 0.8 m.
- Wave height: 0.3–0.8 m
- Water depth: 0–1.4 m (children's zone: 0–0.6 m)
- Shoreline length: 200 m
3. Lazy River
A 500 m circular river running through the center of the resort. Guests float around on rubber boats at a relaxed pace — one lap takes about 15 minutes.
- Length: 500 m
- Width: 25 m
- Flow speed: 0.8 m/sec
4. Diving Pool
A diving pool with platforms at four heights. The view from the 10 m platform is panoramic.
- Diving platforms: 1 m / 3 m / 5 m / 10 m
- Water depth: 5 m
5. Fountain Kids Pool
A circular pool designed for young children, with fountains and a small slide.
- Diameter: 20 m
- Water depth: 30 cm
6. Competitive Pool
A standard lap pool that also hosts swimming events for children.
- Size: 25 m × 13 m
- Water depth: 1.2 m
7. Kids Water Paradise
A dedicated area for younger children featuring a gentle slide and two types of play equipment.
- Available to children ages 3 and up through elementary school (under 125 cm tall)
8. Synchro & Competitive Pool (Hotel Guest Area)
- Size: 25 m × 21 m
- Water depth: 2 m
9. Children's Pool (Hotel Guest Area)
- Water depth: 30 cm
Oiso Prince Hotel
Adjacent to Oiso Long Beach, Oiso Prince Hotel offers a stay-and-swim resort option. Hotel guests can take breaks in their rooms between pool sessions, and the property features restaurant and dinner buffet options. Evening sparkler fireworks in the hotel's private outdoor area are available for those staying overnight.
The hotel also features THERMAL SPA S.WAVE — a spa facility with a heated infinity pool overlooking Sagami Bay, along with a natural hot spring and sauna.
Admission
| Category | Full-day ticket | Afternoon ticket (from 2:00 PM) |
|---|---|---|
| Adults | ¥4,400–¥4,900 | ¥2,700–¥3,000 |
| Middle & high school students | ¥3,000–¥3,300 | ¥2,000–¥2,300 |
| Elementary school students & seniors (65+) | ¥2,400–¥2,600 | ¥1,400–¥1,700 |
| Children (ages 3 to preschool) | ¥1,200–¥1,400 | ¥800–¥1,000 |
Oiso Prince Hotel guests staying on plans without pool access included can use the pool at half the regular rate. All prices include consumption tax.
Operating Information
- Season: July 4 (Sat) – September 13 (Sun), 2026
- Hours: 9:00 AM – 5:00 PM
- Weekdays (Jul 6–10, Jul 13–17, Sep 1–4, Sep 7–11): 10:00 AM – 5:00 PM
- Address: 546 国府本郷, Oiso-machi, Naka-gun, Kanagawa 259-0193
- Founded: July 1957
Access
By car:
- Via Tomei Expressway (Atsugi IC) → Odawara-Atsugi Road (Oiso IC): approx. 2 km (about 5 min under normal conditions)
- Via Seisho Bypass (Oiso West IC): approx. 1 min
By train:
- From Oiso Station (JR Tokaido Line) → Local bus (approx. 13 min under normal conditions) or taxi (approx. 9 min / approx. ¥1,800)
