Hiroshima in July
In July, Hiroshima has 279.8 mm (11.02 in) of rain, a daily high of 30.9 °C (87.6 °F) and a daily low of 24.1 °C (75.4 °F), as 1991-2020 means; figures in brackets are converted.
Last updated : what the month is like; shorter source notes.
Best time to visit Hiroshima: July misses our rule: days are 2.9 °C over our 28 °C and rain is 129.8 mm over our 150 mm. Expect 10.6 rain days and days that shorten by 32 min.
What July is like in Hiroshima
- Fireworks burst over Hiroshima's port in July. The city lists the Minato Yume fireworks as one of its main festivals of the year. Source: Hiroshima City (city yearbook 2024), checked .
- Fireflies fly in Yuki, a hot spring town ringed by clean hills and rivers, from June into July. It is known as Hiroshima's hidden retreat. Source: Dive! Hiroshima (Hiroshima Tourism Association, official), checked .
- Each summer break, people meet at Hiroshima Toshogu to do radio exercises together. This runs from late July to early August. Source: Hiroshima Toshogu (official), checked .
Key figures
Weather in July, 1991-2020 means
- Daily high
- 30.9 °C (87.6 °F)
- Daily low
- 24.1 °C (75.4 °F)
- Rain
- 279.8 mm (11.02 in) in the month
- Sunshine
- 173.4 h in the month
Climate normals 1991-2020, computed by JMA and submitted to the World Meteorological Organization. Checked .
Station: Hiroshima, 1.6 km from the city centre point.
In July the sea off Hiroshima averages 24.2 °C (75.6 °F), 3.8 °C warmer than in June.
Our 1991-2020 mean of NOAA OISST v2.1, checked .
Daylight on 15 July 2026
- Sunrise
- 05:09 local time
- Sunset
- 19:23 local time
- Day length
- 14 h 14 min
Day length 1-31 July: 14 h 25 min to 13 h 53 min, -32 min.
Source: NOAA Solar Calculator equations, checked .
Month by month
Each month: daily high in °C, then rain in mm, 1991-2020 means.
WMO climate normals 1991-2020, as above, checked .
This month against the year
| Measure | July | Rank |
|---|---|---|
| Daily high | 30.9 °C | 2nd warmest |
| Daily low | 24.1 °C | 2nd warmest |
| Rain | 279.8 mm | wettest |
| Sunshine | 173.4 hours | 6th sunniest |
| Day length | 14 h 14 min | 2nd longest |
Equal values share a rank. How we rank months
Sunshine share: 39% of the 440.2 hours from sunrise to sunset in July. How we compute sunshine share
Hiroshima in July, on average: 10.6 rain days (1 mm or more).
WMO climate normals 1991-2020, as above, checked .
Day length: NOAA solar equations, checked .
Public holidays this month
| Date | Holiday | Scope |
|---|---|---|
| Monday | Marine Day | national |
| Date | Holiday | Scope |
|---|---|---|
| Monday | Marine Day | national |
Checked against the official list, .
Source: holidays Python library, checked . Library: holidays 0.105.
Same month in 20 cities
Hiroshima is warmer than 13 of our 20 cities in July by mean daily high. How we rank cities
Closest high and low in July: Osaka (0.7 °C apart), Singapore (0.9), Tokyo (1.4).
| City | Gap from Hiroshima, °C | High, °C | Low, °C | Rain, mm | Sunshine, hours |
|---|---|---|---|---|---|
| Hiroshima (this page) | — | 30.9 | 24.1 | 279.8 | 173.4 |
| Osaka (closest) | 0.7 | 31.8 | 24.6 | 174.4 | 184.0 |
| Singapore (closest) | 0.9 | 31.4 | 25.4 | 146.6 | no data |
| Tokyo (closest) | 1.4 | 29.9 | 22.4 | 156.2 | 151.4 |
| Hong Kong | 1.8 | 31.6 | 26.9 | 385.8 | 197.3 |
| Barcelona | 2.2 | 29.0 | 21.7 | 27.2 | 279.7 |
| New York | 2.2 | 29.4 | 21.2 | 116.8 | no data |
| Rome | 2.5 | 31.0 | 19.3 | no data | no data |
| Chicago | 3.4 | 29.2 | 19.1 | 94.2 | no data |
| Madrid | 3.5 | 33.3 | 19.5 | 9.2 | no data |
| Seville | 4.3 | 35.7 | 20.4 | 0.6 | 388.1 |
| Los Angeles | 4.5 | 27.8 | 18.2 | 0.5 | no data |
| Vienna | 6.4 | 26.4 | 15.9 | 77.7 | 273.6 |
| Paris | 6.6 | 25.7 | 16.2 | 59.4 | 222.0 |
| Berlin | 7.4 | 25.2 | 15.1 | 71.7 | 236.6 |
| Prague | 7.6 | 25.7 | 14.2 | 74.9 | 240.9 |
| Munich | 7.7 | 24.9 | 14.7 | 118.9 | 241.4 |
| London | 8.4 | 23.6 | 14.7 | 43.1 | no data |
| Amsterdam | 9.5 | 22.5 | 13.5 | 82.3 | 225.4 |
| Buenos Aires | 16.0 | 15.5 | 7.5 | 74.4 | 142.3 |
Sources (1991-2020): WMO climate normals and NOAA U.S. Climate Normals, checked , ; Hong Kong: our 1991-2020 mean of the Hong Kong Observatory daily climate series on DATA.GOV.HK; Singapore: our 1991-2020 mean of the National Environment Agency monthly climate series on data.gov.sg; both checked . Each city's page names its station. All sources in full on Methodology.
Hong Kong figures: The Government of the Hong Kong Special Administrative Region and the Hong Kong Observatory own the intellectual property rights in the data; attribution to them and DATA.GOV.HK. Licence: Terms and Conditions of Use of DATA.GOV.HK, version 1.2.
Singapore figures: Contains information from the National Environment Agency on data.gov.sg, made available under the terms of the Singapore Open Data Licence version 1.0 (https://data.gov.sg/open-data-licence). The Agency does not endorse our means.
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 .
- holidays Python library, run locally. Attribution: holidays library, Vacanza team. Licence: MIT. Checked .
Cite this page: City by Month. "Hiroshima in July: weather, daylight, holidays". https://citybymonth.com/cities/japan/hiroshima/july/. Last updated 5 November 2026.