Chiba’s event calendar spreads remarkably evenly across the year — there are compelling reasons to visit in every season. The prefecture’s Pacific coast produces its most distinctive spectacles in winter (flower fields, whale watching, the Setsubun bean-throwing at Naritasan) and spring (the Isumi Railway rapeseed season, Katsuura’s hina doll festival), while summer brings fireworks over Tokyo Bay and Pacific beach culture. This guide covers the major events worth planning a visit around.

February — Naritasan Setsubun Bean Throwing

When: February 3rd
Where: Naritasan Shinshoji Temple, Narita

Japan’s largest Setsubun celebration takes place at Naritasan Shinshoji Temple, where kabuki actors, sumo wrestlers, and professional athletes throw roasted soybeans (fukumame) from the temple’s main hall platform to tens of thousands of waiting visitors below. The ritual marks the traditional end of winter (setsu = seasonal divide, bun = division), and catching beans thrown by a celebrity sumo champion or kabuki actor is considered especially good fortune.

The crowds are enormous — upward of 100,000 visitors over the day — and arrive as early as 8:00 AM to secure positions near the main hall. The bean-throwing ceremonies run approximately every 90 minutes from mid-morning. The atmosphere is festive and good-natured; street food vendors line the Omotesando, and the combination of the ancient ritual, the celebrity participants, and the sheer scale of the crowd makes this one of the most impressive Setsubun events in the country.

Practical: Arrive by 9:00 AM if you want a close position. Narita Station via Keisei or JR. The ceremony is free to attend.

March — Katsuura Grand Hinamatsuri

When: Late February to early March (multi-day)
Where: Tomisaki Shrine steps and town centre, Katsuura

Hinamatsuri (Doll Festival, March 3rd) is celebrated across Japan, but Katsuura’s version is the most visually spectacular in the entire country. Over 30,000 traditional hina dolls are arranged on the long stone staircase leading up to Tomisaki Shrine — tier upon tier of elaborately dressed imperial court figures in silk and gold cascading down the hillside. The effect, particularly when photographed from the bottom of the stairs with the shrine gateway visible above the sea of dolls, is unlike any other festival display in Japan.

The dolls are contributed by households from across Chiba and the broader Kanto region. Some are centuries old; others are recent productions. All are arranged on the stairs by volunteer teams in the days before the festival opens. The display runs for about 10 days.

The town also hosts events during the festival period: local performances, food stalls near the harbour, and special market openings at the fish market. It is worth arriving early on a weekday when the crowds are smaller and the doll display easier to appreciate.

Practical: JR Sotobo Line to Katsuura. Free to view. Shrine entry ¥0. Combine with a visit to the morning fish market.

March–April — Isumi Railway Rapeseed and Cherry Blossom Season

When: Late March to mid-April (peak varies each year)
Where: Isumi Railway line, central Chiba

The single-track Isumi Railway becomes one of Japan’s most photographed railway lines when the embankments along its route burst into rapeseed yellow and cherry blossom pink in late March and early April. This is not a formal festival but a seasonal phenomenon — photographers gather at known vantage points along the line to capture the yellow diesel railcar threading through the combined blossom landscape.

The best combinations of rapeseed and cherry blossom overlap for approximately 7–10 days in late March to early April, depending on the year’s weather. The exact timing can be tracked by following reports from Japanese photography communities online in the weeks before visiting.

Practical: JR Sotobo Line to Ohara, then Isumi Railway. Services are infrequent — check the timetable before visiting. Round trip on the full line takes about 2 hours.

April — Izumi Nature Park Cherry Blossom Festival

When: Late March to early April
Where: Izumi Nature Park (泉自然公園), Chiba City

Over 500 cherry trees in Izumi Nature Park create one of the most impressive blossom displays in the Kanto region, covering the park’s undulating landscape in pale pink and white. A festival (Sakura Matsuri) runs during peak bloom with food stalls, folk performances, and evening illuminations. The park is large enough to absorb significant crowds without feeling overwhelmed.

Practical: Bus from Chiba Station or Keisei Tsudanuma. Free entry to the park. Sakura Matsuri events run for approximately two weeks.

August — Summer Fireworks along the Boso Coast

Several municipalities along the Boso Peninsula coast hold summer fireworks festivals in late July and August. The largest are at Kisarazu (Kisarazu Port Festival) and along the Kujukuri coast, where shells burst over the Pacific and their reflections scatter across the water.

Kisarazu’s fireworks festival is held on a weekend in early August, typically launching several thousand shells from the waterfront. The combination of Tokyo Bay views, yukata-clad crowds, and high-quality pyrotechnics makes it one of the better summer fireworks experiences within easy reach of Tokyo. Kujukuri beach fireworks on certain summer weekends are more informal but dramatically atmospheric — thousands of shells over the open Pacific at night.

Practical: Check municipal websites for exact dates as they vary slightly each year. Kisarazu is accessible via JR Uchibō Line. For Kujukuri, car access is most convenient.

October–January — Whale Watching off Choshi

When: October through January (peak November–December)
Where: Pacific waters off Cape Inubosaki, departing from Choshi port

The offshore Pacific waters where the warm Kuroshio and cold Oyashio currents meet near Cape Inubosaki support significant whale populations during their autumn and winter migration. Local charter operators from Choshi port run half-day tours (approximately 3 hours) targeting humpback whales and sperm whales, with sighting rates that are consistently good during peak months.

This is not a purpose-built tourist whale watching operation — the charter boats are working fishing vessels and the atmosphere is accordingly practical and authentic. Sightings are not guaranteed, but November and December offer the best odds. Bring warm layers; the offshore temperature is several degrees colder than shore.

Practical: Book charter boats directly through Choshi port operators (search for Choshi kujira-watching charter). JR Sobu Line limited express to Choshi. Advance booking essential.

Ongoing Annual Event: Tokyo Game Show (September)

When: Late September (4 days)
Where: Makuhari Messe, Chiba City

Tokyo Game Show at Makuhari Messe is the largest annual gaming event in Asia, attracting 200,000+ visitors over four days. Major game publishers worldwide debut their upcoming releases here. Trade days (first two days) are restricted to industry professionals; public days (final two days) are open to ticket holders. Tickets sell out rapidly — purchase well in advance via the TGS website.

Practical: JR Keiyo Line to Kaihin Makuhari. Book tickets online months in advance for public days.

Practical Planning Notes

Advance booking: The Naritasan Setsubun event requires no booking — simply arrive early. Isumi Railway follows a fixed timetable. Whale watching charters require advance reservation. Tokyo Game Show tickets should be purchased weeks in advance.

Combining events: Katsuura Hinamatsuri pairs naturally with a Boso Peninsula day trip (fish market morning + hina dolls + coastal drive). Isumi Railway blossom season combines well with Izumi Nature Park sakura in the same late-March to mid-April window. Whale watching from Choshi works with a Cape Inubosaki lighthouse walk and a Choshi izakaya evening.