One month

The Best Japan eSIM for a 30 Day Stay

A month changes the pattern: Wi-Fi carries the heavy hours and mobile data becomes the glue. The 30 day shelf, live catalog checked October 22, 2026.

The 30 day shelf, priced

5GB across 30 days at $10.54: the Wi-Fi-first minimalist, about what a lunch set costs in Tokyo. 10GB at $14.55: the long-stay workhorse. 20GB at $22.89: hotspot afternoons and park video calls. Unlimited at $128.61: flat 10 Mbps, no daily ceiling.

Long stays burn less than you think

With apartment and cafe Wi-Fi, many monthlong travelers use less than a one-week tourist. Track week one in your phone's settings; if it says a gigabyte, the 5GB or 10GB month is honestly enough.

Working the month

The unlimited plan's 10 Mbps cap is built for phones. A laptop workday belongs on the 20GB bucket plus real Wi-Fi; the business page below has the full setup, receipts included.

Past 30 days

A season or a year wants a Japanese long-term provider, not a travel eSIM, ours included. Up to a month: one install covers the stay, and month two takes the same two minutes.

Straight answers

What does a 30 day Japan eSIM cost?

Today: 5GB at $10.54, 10GB at $14.55, 20GB at $22.89, unlimited at $128.61. Prices are the live catalog, checked October 22, 2026.

Is 10GB enough for a month in Japan?

With apartment and cafe Wi-Fi carrying the heavy hours, yes for most long-stay travelers. Track week one and size month two accordingly.

Can I use a travel eSIM for 3 months in Japan?

You can chain 30 day plans, an install takes two minutes, but past a month or two a Japanese long-term provider usually serves better. We say so rather than selling you three eSIMs blind.