abesteSIM
1 GB
3 days$0.62/GB
$0.62Lowest ever
See deal
Monte FujiBest eSIM for Japan
from $0.03/GB6,387 plans36 providersPrices updated Oct 16, 2026
Which plan should you get?
Your trip: ≈7 GB over 7 days
Trip length (days)
Your data use
Our pick for your trip
abesteSIM
Unlimited · 7 days1 GB/day
$3.81$0.54 /day
The cheapest unlimited plan covering 7 days.
Lowest everSee dealBudget option
Stellar eSIM
5 GB · 10 days
$2.49$0.50/GB
Cheaper if you end up using less data than planned.
Lowest everSee dealWhat the catalogue says
- abesteSIM's unlimited plan gives 1 GB a day at full speed, then slows down.
- 16 GB costs only $3.35 more with Stellar eSIM. Worth it if you're unsure.
Data
Duration
240 plans
1 GB8 plans
from $0.62/GBabesteSIM
$0.62Lowest ever
1 GB · 3 days
$0.62/GB
Stellar eSIM
$0.67
1 GB · 7 daysFree VPN
$0.67/GB
Stellar eSIM
$0.85
1 GB · 30 daysFree VPN
$0.85/GB
MicroEsim
$1.17Lowest ever
1 GB · 5 days
$1.17/GB
abesteSIM
$1.19Lowest ever
1 GB · 5 days
$1.19/GB
2 GB5 plans
from $0.81/GBStellar eSIM
$1.62
2 GB · 15 daysFree VPN
$0.81/GB
Stellar eSIM
$1.63
2 GB · 20 daysFree VPN
$0.82/GB
Stellar eSIM
$1.66
2 GB · 30 daysFree VPN
$0.83/GB
3 GB20 plans
from $0.38/GBStellar eSIM
$1.15
3 GB · 1 dayFree VPN
$0.38/GB
Stellar eSIM
$1.68
3 GB · 5 daysFree VPN
$0.56/GB
Stellar eSIM
$1.89
3 GB · 15 daysFree VPN
$0.63/GB
Stellar eSIM
$1.94
3 GB · 30 daysFree VPN
$0.65/GB
abesteSIM
$2.01Lowest ever
3 GB · 3 days
$0.67/GB
abesteSIM
$2.11Lowest ever
3 GB · 5 days
$0.70/GB
4 GB5 plans
from $0.81/GBStellar eSIM
$3.22
4 GB · 20 daysFree VPN
$0.81/GB
Stellar eSIM
$3.57
4 GB · 30 daysFree VPN
$0.89/GB
Airhub
$4.50Lowest ever
4 GB · 30 days
$1.13/GB
5 GB20 plans
from $0.49/GBabesteSIM
$2.47Lowest ever
5 GB · 3 days
$0.49/GB
Stellar eSIM
$2.49Lowest ever
5 GB · 10 daysFree VPN
$0.50/GB
abesteSIM
$2.69Lowest ever
5 GB · 5 days
$0.54/GB
Stellar eSIM
$2.89
5 GB · 15 daysFree VPN
$0.58/GB
Stellar eSIM
$2.91
5 GB · 30 daysFree VPN
$0.58/GB
eSIMCard
$3.03Lowest ever
5 GB · 3 days
$0.61/GB
6 GB2 plans
from $0.92/GBStellar eSIM
$5.53
6 GB · 30 daysFree VPNRegional
$0.92/GB
Stellar eSIM
$5.53
6 GB · 20 daysFree VPNRegional
$0.92/GB
7 GB2 plans
from $0.93/GBStellar eSIM
$6.48
7 GB · 30 daysFree VPNRegional
$0.93/GB
Stellar eSIM
$6.48
7 GB · 20 daysFree VPNRegional
$0.93/GB
8 GB4 plans
from $0.93/GBStellar eSIM
$7.44
8 GB · 30 daysFree VPNRegional
$0.93/GB
Stellar eSIM
$7.44
8 GB · 20 daysFree VPNRegional
$0.93/GB
9 GB4 plans
from $0.93/GBStellar eSIM
$8.40
9 GB · 30 daysFree VPNRegional
$0.93/GB
Stellar eSIM
$8.40
9 GB · 20 daysFree VPNRegional
$0.93/GB
10 GB20 plans
from $0.46/GBStellar eSIM
$4.58
10 GB · 20 daysFree VPN
$0.46/GB
abesteSIM
$4.72Lowest ever
10 GB · 3 days
$0.47/GB
Stellar eSIM
$4.86
10 GB · 30 daysFree VPN
$0.49/GB
abesteSIM
$5.07Lowest ever
10 GB · 5 days
$0.51/GB
abesteSIM
$5.32Lowest ever
10 GB · 7 days
$0.53/GB
abesteSIM
$5.47Lowest ever
10 GB · 10 days
$0.55/GB
12 GB6 plans
from $0.44/GBStellar eSIM
$5.27
12 GB · 30 daysFree VPN
$0.44/GB
Stellar eSIM
$6.15
12 GB · 20 daysFree VPN
$0.51/GB
Roamify
$8.50Lowest ever
12 GB · 4 days
$0.71/GB
MicroEsim
$9.95Lowest ever
12 GB · 4 days
$0.83/GB
MobiMatter
$9.99Lowest ever
12 GB · 30 days
$0.83/GB
14 GB3 plans
from $0.52/GBStellar eSIM
$7.23
14 GB · 20 daysFree VPN
$0.52/GB
Stellar eSIM
$12.95
14 GB · 30 daysFree VPN
$0.93/GB
GIGAGO eSIM
$16.00Lowest ever
14 GB · 7 days2 GB/day
$1.14/GB
eSIM prices for Japan
The lowest live price for every data and duration combination, from the 6387 plans we track.
| Data | 7+ days | 15+ days | 30+ days |
|---|---|---|---|
| 1 GB+ | $0.67Stellar eSIM | $0.85Stellar eSIM | $0.85Stellar eSIM |
| 3 GB+ | $1.89Stellar eSIM | $1.89Stellar eSIM | $1.94Stellar eSIM |
| 5 GB+ | $2.49Stellar eSIM | $2.89Stellar eSIM | $2.91Stellar eSIM |
| 10 GB+ | $4.58Stellar eSIM | $4.58Stellar eSIM | $4.86Stellar eSIM |
| 20 GB+ | $8.14Stellar eSIM | $8.14Stellar eSIM | $8.14Stellar eSIM |
| Unlimited | $2.29abesteSIM | $4.70abesteSIM | $8.40abesteSIM |
Travel guide
Internet in Japan: what travelers should know
- Currency
- JPY (¥)
- Capital
- Tokyo
- Plugs
- A/B · 100 V
- Emergency
- 110 · 119
- Dial code
- +81
- Language
- Japanese
01
Networks and coverage
Travel eSIMs in Japan ride one of three networks: NTT Docomo (the widest rural reach, including mountain trails and shinkansen tunnels), KDDI/au or SoftBank. All three are excellent in cities; Docomo-based plans are the safest bet for the Japanese Alps, Hokkaido or remote onsen towns. 3G is gone, so make sure your phone supports 4G bands 1/3/19 — recent iPhones and Galaxy models all do. 5G is common in Tokyo, Osaka and Nagoya but still patchy between cities.
02
Arriving and activating
Install the eSIM over Wi-Fi before you fly and enable it when you land at Narita, Haneda or Kansai — coverage inside all three terminals is strong. Fill in Visit Japan Web (immigration and customs QR) before boarding; you'll need it online at the arrivals hall. Airport pocket-Wi-Fi counters are the old way of doing this: an eSIM does the same job with nothing to return.
03
Data habits that matter in Japan
Expect heavy map usage — Tokyo stations are mazes, and Google Maps' train directions are indispensable. Free Wi-Fi exists in convenience stores and hotels but is unreliable in the street. Suica/Pasmo top-ups, translation apps and QR menus all need data; 1 GB per day is a comfortable budget, and tethering is worth having for laptops on the shinkansen.
Weather in Japan: when to go
Live conditions in Tokyo plus the climate normals that decide the best month for your trip.
Right now
Tokyo
14°
Feels like 13°
Humidity 65%Wind 6 km/hUV index 4ModerateSunrise 05:56Sunset 17:10
Today
18°
7°
Sun
20°
6°
Mon
20°
10°
61%
Tue
22°
14°
86%
Wed
23°
15°
88%
Thu
19°
6°
59%
Fri
19°
5°
Live forecast from Open-Meteo · updated hourly
Best time to visit
Average highs and lows per month; bars show rainy daysBest months
June · September · October
Mild temperatures and least rain
Harder months
February · March
Cold and short days
Wettest month
June
15 rainy days
Driest month
December
6 rainy days
Winter-4° – 7°
26 rainy days
Spring4° – 15°
36 rainy days
Summer17° – 27°
47 rainy days
Autumn11° – 20°
26 rainy days
eSIM providers for Japan
eSIM for Japan: common questions
How much does an eSIM for Japan cost?
Plans currently start at $0.41. We compare 6387 live offers and re-check every price daily.
Are there unlimited data plans?
Yes — 2030 of the tracked plans come with unlimited data, from $0.28 per day.
When should I buy and install the eSIM?
Buy it before you travel and install it over Wi-Fi at home; activate it when you land. Validity usually starts with the first connection at the destination.
How does RighteSIM rank these plans?
Purely by live price per GB. Paid placements never change the organic ranking and are always labeled as sponsored. How we evaluate →
