Japan's Golden Week water shortage is making headlines this spring, as unusually low rainfall has forced several popular tourist regions to introduce restrictions right in the middle of the country's busiest travel period. Reservoirs in parts of Shikoku, Kyushu and western Honshu dropped to critically low levels after a dry winter and a below-average spring. For travellers planning a Golden Week trip, and for anyone following Japan travel news closely, this is a situation worth understanding properly.
Why Golden Week and Water Scarcity Are a Dangerous Combination
Golden Week, or ゴールデンウィーク (goruden uiku, Golden Week) in romaji, runs from late April through early May and bundles four national holidays into one extended break. It's the single busiest domestic travel period in Japan, and in 2025, an estimated 24 million people were expected to move around the country during those days. Now, add a water crisis to that equation.
Persistent low precipitation since late autumn 2024 left dam reserves in several prefectures well below seasonal averages. Kagawa Prefecture on Shikoku Island, which has a long history of water shortages, was among the first to issue supply warnings. Kagawa's main reservoir, the Fuyunosato Dam, sat at roughly 40 percent capacity heading into Golden Week. For a region already known for tight water management, that number is alarming.
Fun fact: Kagawa is sometimes nicknamed the 'water shortage prefecture' by Japanese locals, a label residents aren't exactly proud of. The area relies heavily on the Yoshino River system, and when rainfall dips below normal for several consecutive months, the knock-on effects hit quickly. Hotels, ryokan and public bath facilities, called 銭湯 (sento, public bathhouse) or onsen, all depend on a consistent water supply.
How Tourist Regions Are Feeling the Impact
Trust me on this one: the ripple effects of a water shortage on Japan's tourism industry go far beyond a few closed fountains. Onsen resorts are among the most directly affected because the entire appeal of a stay at a traditional onsen ryokan collapses if water-based facilities need to be limited or temporarily closed.
Onsen Towns and Ryokan Under Pressure
Several smaller onsen towns in Ehime and Kochi prefectures asked guests during Golden Week 2025 to be mindful of water usage, with some facilities reducing the number of available baths or shortening operating hours. For travellers who had booked months in advance specifically for that deep soaking experience, this was genuinely disappointing news. From my experience, the 露天風呂 (rotenburo, open-air bath), the outdoor bath, is often the single most anticipated part of any ryokan stay. Losing that, even partially, changes the whole trip.
A great example of how seriously this is taken: the city of Takamatsu in Kagawa ran public awareness campaigns during Golden Week urging tourists and locals alike to cut daily water use by around 20 percent. That kind of public messaging is unusual during what is supposed to be a celebratory holiday period.
Agriculture vs Tourism: A Quiet Tension
Unlike what we're used to in many European countries, Japan's water management systems have to balance agricultural needs, household supply and tourism infrastructure simultaneously. Rice paddies require significant irrigation starting in May, which is right when Golden Week ends and the planting season kicks off. When reservoirs are already low, farmers and tourism operators quietly compete for the same resource. That tension doesn't make the news as loudly as the tourism angle, but it matters enormously.
What Japanese Language Learners Can Take Away from This
If you're studying Japanese, this story gives you some genuinely useful vocabulary in context. The word for water shortage is 水不足 (mizu busoku, water shortage), where mizu means water and busoku means shortage or insufficiency. You'll also hear 危機 (kikin, crisis), meaning scarcity or crisis, used in news reports. Reservoir in Japanese is pronounced ダム (damu, dam) (borrowed from the English 'dam') for the structure, while 貯水池 (chosuichi, reservoir / storage basin) is the more formal term for a reservoir or storage basin.
Basically, following real Japanese news events is one of the most effective ways to pick up vocabulary that textbooks tend to skip. Weather and infrastructure stories like this one use practical, everyday language that you'll actually hear on Japanese television or read in newspaper headlines.
My tip: bookmark a simple Japanese news site like NHK Web Easy, which rewrites current stories in simpler Japanese. A story like the Golden Week water shortage would appear there with furigana and accessible vocabulary, making it perfect reading practice at the intermediate level.
Travel Tips If You're Heading to Affected Regions
So what does this actually mean if you've already got a trip planned to Shikoku or western Japan? First, don't panic. Japan's infrastructure is well managed, and a supply warning doesn't mean taps are running dry. What it does mean is that some facilities may operate differently than you'd expect.
Pro tip: contact your ryokan or hotel directly before arrival and ask whether any facilities are affected. Japanese hospitality staff, known for their おもてなし (omotenashi, Japanese-style hospitality) spirit of wholehearted service, will almost always give you an honest and helpful answer. Most properties would rather tell you in advance than disappoint you on arrival.
And it gets better: some ryokan in water-careful regions have actually invested in recirculation systems and efficient infrastructure precisely because of their history with shortages. Staying in one of these places can give you a surprisingly eco-conscious travel experience without sacrificing comfort. Personally, I'd see it as a chance to travel more thoughtfully rather than a reason to cancel.
To be fair, if you're visiting specifically for an onsen experience and the facilities are significantly reduced, it's reasonable to ask the property about partial refunds or rescheduling. Japanese hospitality culture generally handles these conversations graciously.
Frequently Asked Questions
Which parts of Japan are most affected by the 2025 Golden Week water shortage?
Kagawa Prefecture on Shikoku Island was among the most affected, with reservoir levels around 40 percent of capacity. Parts of Ehime, Kochi and some areas of western Honshu also reported lower than normal water reserves heading into Golden Week 2025.
Will the water shortage affect my hotel or hot spring resort stay in Japan?
It depends on the specific location. Some hot spring resorts reduced operating hours or the number of available baths. It's best to contact your accommodation directly before your trip to ask whether any facilities are limited during your stay.
Is Golden Week always this busy in Japan?
Yes, Golden Week is Japan's busiest domestic travel period, running from late April into early May. It combines four national holidays and sees tens of millions of people travelling across the country. Booking accommodation and transport well in advance is strongly recommended.
