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Level 1Exercise normal precautions
Exercise normal precautions
When to go · Climate guide
Japanwhen to go
Japan's national averages run from 4 °C in January to 28 °C in August, with rainfall between 91 mm in February and 223 mm in July and 5.2–7.5 hours of sun a day. Against the default preferences (under 2.7 mm of rain a day, at least 6 hours of sun), the strongest months are January, February and March. Its 47 regions span 10–24 °C in annual mean temperature, so the national figure hides a good deal.
- Capital
- Tokyo
- Region
- Asia
- TZ
- Asia/Tokyo
- Area
- 370,276 km²
Best months to visit
When Japan shines
Climate at a glance · 10-year ERA5
A decade of weather, in one page
— daytime high— overnight low▬ typical range
View data table
| Month | Average daytime high (°C) | Average overnight low (°C) | Typical low | Typical high |
|---|---|---|---|---|
| January | 4.0 | -2.3 | -6.0 | 7.8 |
| February | 4.9 | -1.8 | -5.1 | 10.7 |
| March | 9.6 | 2.3 | -2.1 | 15.0 |
| April | 14.8 | 7.2 | 2.6 | 19.6 |
| May | 19.6 | 12.1 | 7.5 | 23.4 |
| June | 22.7 | 16.5 | 12.4 | 26.9 |
| July | 26.8 | 21.1 | 18.1 | 30.5 |
| August | 28.0 | 22.0 | 19.0 | 30.5 |
| September | 24.7 | 18.5 | 14.3 | 28.6 |
| October | 18.6 | 11.9 | 7.1 | 23.6 |
| November | 12.7 | 5.6 | 0.9 | 17.7 |
| December | 6.3 | 0.0 | -3.7 | 11.6 |
View data table
| Month | Rainfall (mm) |
|---|---|
| January | 93 |
| February | 91 |
| March | 124 |
| April | 135 |
| May | 153 |
| June | 208 |
| July | 223 |
| August | 212 |
| September | 194 |
| October | 162 |
| November | 105 |
| December | 103 |
View data table
| Month | Sunshine hours (hr / day) |
|---|---|
| January | 7.0 |
| February | 7.5 |
| March | 7.4 |
| April | 7.0 |
| May | 6.5 |
| June | 5.3 |
| July | 5.2 |
| August | 5.6 |
| September | 5.5 |
| October | 6.0 |
| November | 6.6 |
| December | 6.6 |
— average▬ typical range
View data table
| Month | Average wind speed (km/h) | Typical low | Typical high |
|---|---|---|---|
| January | 11.8 | 7.8 | 17.8 |
| February | 12.1 | 7.7 | 17.7 |
| March | 11.4 | 7.7 | 16.2 |
| April | 11.2 | 7.5 | 15.9 |
| May | 10.0 | 6.9 | 14.4 |
| June | 8.9 | 6.2 | 13.1 |
| July | 8.3 | 6.1 | 11.7 |
| August | 8.9 | 5.6 | 13.9 |
| September | 9.2 | 6.2 | 14.2 |
| October | 10.2 | 6.6 | 15.3 |
| November | 10.8 | 7.3 | 16.0 |
| December | 11.9 | 7.3 | 18.3 |
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Snow depth
Snow depth for Japan is part of the Premium map and its district-level detail. See what Premium includes.
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Sea surface temperature
Sea surface temperature for Japan is part of the Premium map and its district-level detail. See what Premium includes.
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Heat index
Heat index for Japan is part of the Premium map and its district-level detail. See what Premium includes.
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Humidity
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What’s open · year round
Things to do in Japan
Japan's list is seasonal end to end: something below is out of season in every month of the year, and nothing below runs the whole year.
- ClosedClimbing Mount Fuji
Closed October–June · limited September · at its best July–August
Sources: japan-guide.com, fujisan-climb.jp
- ClosedSkiing in Hokkaido
Closed April–November · at its best January–February
Sources: adventure-life.com, kimkim.com
- At its best
- At its best
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.
47 regions
Japan, taken apart
- Aichi Prefecture9–32 °C yr
- Akita Prefecture1–28 °C yr
- Aomori Prefecture1–27 °C yr
- Chiba Prefecture10–30 °C yr
- Ehime Prefecture9–31 °C yr
- Fukui Prefecture5–29 °C yr
- Fukuoka Prefecture10–32 °C yr
- Fukushima Prefecture3–28 °C yr
- Gifu Prefecture4–29 °C yr
- Gunma Prefecture4–28 °C yr
- Hiroshima Prefecture8–31 °C yr
- Hokkaidō-3–23 °C yr
- Hyōgo Prefecture8–31 °C yr
- Ibaraki Prefecture9–31 °C yr
- Ishikawa Prefecture6–29 °C yr
- Iwate Prefecture2–27 °C yr
- Kagawa Prefecture8–30 °C yr
- Kagoshima Prefecture13–31 °C yr
- Kanagawa Prefecture9–29 °C yr
- Kumamoto Prefecture9–31 °C yr
- Kyōto Prefecture8–32 °C yr
- Kōchi Prefecture10–30 °C yr
- Mie Prefecture9–31 °C yr
- Miyagi Prefecture4–28 °C yr
- Miyazaki Prefecture11–30 °C yr
- Nagano Prefecture2–27 °C yr
- Nagasaki Prefecture10–30 °C yr
- Nara Prefecture7–30 °C yr
- Niigata Prefecture3–29 °C yr
- Okayama Prefecture8–31 °C yr
- Okinawa Prefecture19–29 °C yr
- Saga Prefecture10–32 °C yr
- Saitama Prefecture8–31 °C yr
- Shiga Prefecture7–32 °C yr
- Shimane Prefecture7–30 °C yr
- Shizuoka Prefecture9–29 °C yr
- Tochigi Prefecture6–29 °C yr
- Tokushima Prefecture9–30 °C yr
- Tokyo10–30 °C yr
- Tottori Prefecture6–30 °C yr
- Toyama Prefecture3–29 °C yr
- Wakayama Prefecture9–30 °C yr
- Yamagata Prefecture2–28 °C yr
- Yamaguchi Prefecture9–31 °C yr
- Yamanashi Prefecture5–28 °C yr
- Ōita Prefecture9–31 °C yr
- Ōsaka Prefecture9–33 °C yr
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.
Month by month
A year in Japan, in order
- JanJanuary4.0°C · 93 mm · 7.0 hr/day
Around 4 °C with 93 mm of rain and 7.0 hours of sun a day.
Around 4 °C with 93 mm of rain and 7.0 hours of sun a day.
- FebFebruary4.9°C · 91 mm · 7.5 hr/day
Around 5 °C with 91 mm of rain and 7.5 hours of sun a day.
Around 5 °C with 91 mm of rain and 7.5 hours of sun a day.
- MarMarch9.6°C · 124 mm · 7.4 hr/day
Around 10 °C with 124 mm of rain and 7.4 hours of sun a day.
Around 10 °C with 124 mm of rain and 7.4 hours of sun a day.
- AprApril14.8°C · 135 mm · 7.0 hr/day
Around 15 °C with 135 mm of rain and 7.0 hours of sun a day.
Around 15 °C with 135 mm of rain and 7.0 hours of sun a day.
- MayMay19.6°C · 153 mm · 6.5 hr/day
Around 20 °C with 153 mm of rain and 6.5 hours of sun a day.
Around 20 °C with 153 mm of rain and 6.5 hours of sun a day.
- JunJune22.7°C · 208 mm · 5.3 hr/day
Around 23 °C with 208 mm of rain and 5.3 hours of sun a day.
Around 23 °C with 208 mm of rain and 5.3 hours of sun a day.
- JulJuly26.8°C · 223 mm · 5.2 hr/day
Around 27 °C with 223 mm of rain and 5.2 hours of sun a day.
Around 27 °C with 223 mm of rain and 5.2 hours of sun a day.
- AugAugust28.0°C · 212 mm · 5.6 hr/day
Around 28 °C with 212 mm of rain and 5.6 hours of sun a day.
Around 28 °C with 212 mm of rain and 5.6 hours of sun a day.
- SepSeptember24.7°C · 194 mm · 5.5 hr/day
Around 25 °C with 194 mm of rain and 5.5 hours of sun a day.
Around 25 °C with 194 mm of rain and 5.5 hours of sun a day.
- OctOctober18.6°C · 162 mm · 6.0 hr/day
Around 19 °C with 162 mm of rain and 6.0 hours of sun a day.
Around 19 °C with 162 mm of rain and 6.0 hours of sun a day.
- NovNovember12.7°C · 105 mm · 6.6 hr/day
Around 13 °C with 105 mm of rain and 6.6 hours of sun a day.
Around 13 °C with 105 mm of rain and 6.6 hours of sun a day.
- DecDecember6.3°C · 103 mm · 6.6 hr/day
Around 6 °C with 102 mm of rain and 6.6 hours of sun a day.
Around 6 °C with 102 mm of rain and 6.6 hours of sun a day.
Same climate · neighbouring countries
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