Rishiri Island
Japan
A remote volcanic island off Hokkaido's northern tip dominated by a perfect cone-shaped peak.
Warmest month is August at 23°C on average. Coolest is January at -2°C.
Six lead datapoints
- CoffeeWorld Bank PPP baseline¥450 (~$3.00)PPP price tier 3 / 4
- ¥600 (~$4.00)PPP price tier 3 / 4
- Flight timeMethodology11h 30m from London HeathrowGreat-circle plus routing overhead.
- Flight CO2eDEFRA 2024 factors3,305 kg return from London HeathrowDEFRA 2024 economy factors, includes radiative forcing.
- FCDO advisorygov.uk, snapshot compiled 2026-07-11No specific FCDO warnings against travel.Check the latest FCDO advice before booking.
- Tap waterCDC / WHO guidanceTap water is generally safe to drink.
| Month | Avg high | Swing | Rain days |
|---|---|---|---|
| January | -2° | ±4° | · |
| February | -2° | ±5° | · |
| March | 3° | ±4° | · |
| April | 8° | ±5° | · |
| May | 14° | ±6° | · |
| June | 17° | ±6° | · |
| July | 22° | ±5° | · |
| August | 23° | ±4° | · |
| September | 21° | ±4° | · |
| October | 14° | ±5° | · |
| November | 6° | ±6° | · |
| December | 0° | ±5° | · |
What to do
- Hike up the strenuous trail to Mount Rishiri's summit
- Cycle the dedicated coastal bike path around the island
- Eat fresh sea urchin (uni) pulled straight from the sea
How we know this
Values are the average of the last ten calendar years of daily readings from Visual Crossing, snapped to the destination cluster. Swing is the p10 to p90 range of daily highs, halved for the ± figure. Rain days count any day with at least 1 mm of precipitation.