Best time to visit Hiroshima
By our rule, the best months to visit Hiroshima are April, and October and November. Daily highs then run from 17.7 °C (63.9 °F) in November to 23.7 °C (74.7 °F) in October, and rain from 69.3 mm in November to 141.0 mm in April, as 1991-2020 means; figures in brackets are converted.
Rule: daily high over 16 °C and up to 28 °C, low 8 °C or more, rain 150 mm or less. Means hide hot, cold and wet days. No data on crowds, prices or events. How we test each month
Last updated : why a month misses our rule; near misses.
Each month against the rule
| Month | Meets the rule | High, °C | Low, °C | Rain, mm |
|---|---|---|---|---|
| Jan | No: days average 9.9 °C, under our 16 °C; nights average 2.0 °C, under our 8 °C | 9.9 | 2.0 | 46.2 |
| Feb | No: days average 10.9 °C, under our 16 °C; nights average 2.4 °C, under our 8 °C | 10.9 | 2.4 | 64.0 |
| Mar | No: days average 14.5 °C, under our 16 °C; nights average 5.1 °C, under our 8 °C | 14.5 | 5.1 | 118.3 |
| Apr | Yes | 19.8 | 10.1 | 141.0 |
| May | No: rain is 169.8 mm, over our 150 mm | 24.4 | 15.1 | 169.8 |
| Jun | No: rain is 226.5 mm, over our 150 mm | 27.2 | 19.8 | 226.5 |
| Jul | No: days average 30.9 °C, over our 28 °C; rain is 279.8 mm, over our 150 mm | 30.9 | 24.1 | 279.8 |
| Aug | No: days average 32.8 °C, over our 28 °C | 32.8 | 25.1 | 131.4 |
| Sep | No: days average 29.1 °C, over our 28 °C; rain is 162.7 mm, over our 150 mm | 29.1 | 21.1 | 162.7 |
| Oct | Yes | 23.7 | 14.9 | 109.2 |
| Nov | Yes | 17.7 | 8.9 | 69.3 |
| Dec | No: days average 12.1 °C, under our 16 °C; nights average 4.0 °C, under our 8 °C | 12.1 | 4.0 | 54.0 |
Source: WMO climate normals 1991-2020, checked .
Months by what matters to you
- Warmest daily highs: August 32.8 °C, July 30.9 °C, September 29.1 °C.
- Coolest daily highs: January 9.9 °C, February 10.9 °C, December 12.1 °C.
- Driest: January 46.2 mm, December 54.0 mm, February 64.0 mm.
- Sunniest: May 210.8 hours, August 207.3 hours, April 191.9 hours.
- Longest days: June 14 h 27 min, July 14 h 14 min, May 13 h 57 min.
Top three months by each mean. Equal values share a place. Day length on the 15th of each month, 2026.
Day length: NOAA solar equations, checked .
Sources
- WMO Member Nations (each national weather service's own submission); archived by NOAA National Centers for Environmental Information. Attribution: WMO Member Nations (2023). WMO Climatological Standard Normals for 1991-2020 (NCEI Accession 0253808). Station files named in each record. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/800j-vn07. Accessed on the check date shown. Licence: No licence stated. Published by NOAA NCEI for WMO; citation requested. Checked .
- NOAA Solar Calculator equations, computed locally, NOAA Global Monitoring Laboratory (method); City by Month (computation). Attribution: Computed with the NOAA Solar Calculator method (no NOAA endorsement implied). Licence: Method, not data. Checked .
Cite this page: City by Month. "Best time to visit Hiroshima, month by month". https://citybymonth.com/cities/japan/hiroshima/best-time/. Last updated 5 November 2026.