AU
Level 1Exercise normal precautions
Exercise normal precautions
Japan · Yamanashi Prefecture · September
Yamanashi Prefecture in Septemberhow the month reads
September is a challenging month for Yamanashi Prefecture overall inside Japan, with warmer than the yearly mean by 7.7°C. The safety bulletins below apply.
- Rank
- 11 of 12
- Score
- 25/100
September match
25/100
Free-tier default preferences.
What’s open · September
Things to do in Yamanashi Prefecture in September
- LimitedClimbing Mount Fuji
the season ends around 10 September and everything closes behind it
Sources: japan-guide.com, fujisan-climb.jp
Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.
- Temperature24°C+7.7°C vs. yearly mean
- Month rank11 of 12for Yamanashi Prefecture
- Best monthsJanuary · February · Mayhighest regional score
12-month temperature · Yamanashi Prefecture
September in context
View data table
| Month | Average daytime high (°C) |
|---|---|
| January | 4.8 |
| February | 6.1 |
| March | 10.4 |
| April | 15.5 |
| May | 19.8 |
| June | 22.7 |
| July | 26.5 |
| August | 27.5 |
| September | 23.9 |
| October | 17.8 |
| November | 12.9 |
| December | 7.2 |
Safety · 6 governments
What the governments say about Japan
Combined advisory · most-cautious-wins
Exercise normal precautions
Highest level across 6 governments · Advisory last changed
See breakdown by countryHide breakdown
CA
Level 1Exercise normal precautions
Exercise normal precautions
DE
Level 1Exercise normal precautions
Exercise normal precautions
NL
Level 1Exercise normal precautions
Exercise normal precautions
UK
Level 1Exercise normal precautions
Exercise normal precautions
US
Level 1Exercise normal precautions
Exercise normal precautions
Parts of Japan carry a higher advisory — up to level 4, "Do not travel". The governments concerned name a region rather than a boundary, so the carve-out is not drawn on the map and is not reflected in the combined level above. Follow the source links for where it applies.
Start free
Plan a September trip to Yamanashi Prefecture.
No card required. Upgrade to Premium whenever you want more depth.