Hiroshima in January
In January, Hiroshima has 46.2 mm (1.82 in) of rain, a daily high of 9.9 °C (49.8 °F) and a daily low of 2.0 °C (35.6 °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: January misses our rule: days are 6.1 °C under our 16 °C and nights are 6.0 °C under our 8 °C. Expect 5.5 rain days and days that grow by 36 min.
What January is like in Hiroshima
- Rice cakes toast over the tondo fire at Hiroshima Toshogu in mid-January. People eat them for a healthy year ahead. Source: Hiroshima Toshogu, checked .
- Beans fly at Toukasan, Enryuji temple, on the last Sunday of January each year. At the same rite, people thank the god of the year they were born in. Source: Toukasan Enryuji (official), checked .
- Winter peonies in many colours bloom at Shukkeien from the New Year to mid-January. Each one sits under a small straw shelter. Source: Shukkeien (Hiroshima Prefecture, official site), checked .
Key figures
Weather in January, 1991-2020 means
- Daily high
- 9.9 °C (49.8 °F)
- Daily low
- 2.0 °C (35.6 °F)
- Rain
- 46.2 mm (1.82 in) in the month
- Sunshine
- 138.6 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 January the sea off Hiroshima averages 14.5 °C (58.1 °F), 2.5 °C cooler than in December.
Our 1991-2020 mean of NOAA OISST v2.1, checked .
Daylight on 15 January 2026
- Sunrise
- 07:16 local time
- Sunset
- 17:23 local time
- Day length
- 10 h 06 min
Day length 1-31 January: 9 h 54 min to 10 h 30 min, +36 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 | January | Rank |
|---|---|---|
| Daily high | 9.9 °C | coldest |
| Daily low | 2.0 °C | coldest |
| Rain | 46.2 mm | driest |
| Sunshine | 138.6 hours | least sunny |
| Day length | 10 h 06 min | 2nd shortest |
Equal values share a rank. How we rank months
Sunshine share: 44% of the 314.5 hours from sunrise to sunset in January. How we compute sunshine share
Hiroshima in January, on average: 5.5 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 |
|---|---|---|
| Thursday | New Year's Day | national |
| Monday | Coming of Age Day | national |
| Date | Holiday | Scope |
|---|---|---|
| Friday | New Year's Day | national |
| Monday | Coming of Age 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 11 of our 20 cities in January by mean daily high. How we rank cities
Closest high and low in January: Tokyo (0.5 °C apart), Osaka (0.6), Madrid (0.7).
| City | Gap from Hiroshima, °C | High, °C | Low, °C | Rain, mm | Sunshine, hours |
|---|---|---|---|---|---|
| Hiroshima (this page) | — | 9.9 | 2.0 | 46.2 | 138.6 |
| Tokyo (closest) | 0.5 | 9.8 | 1.2 | 59.7 | 192.6 |
| Osaka (closest) | 0.6 | 9.7 | 3.0 | 47.0 | 146.5 |
| Madrid (closest) | 0.7 | 10.2 | 3.0 | 32.0 | no data |
| London | 1.4 | 8.6 | 3.5 | 58.1 | no data |
| Paris | 1.8 | 7.6 | 3.2 | 47.6 | 59.0 |
| Rome | 1.8 | 12.0 | 3.4 | no data | no data |
| Amsterdam | 2.3 | 6.2 | 1.2 | 66.5 | 69.0 |
| Barcelona | 4.3 | 14.2 | 6.2 | 42.6 | 119.9 |
| Berlin | 4.9 | 3.6 | -1.4 | 47.7 | 51.1 |
| Munich | 4.9 | 4.0 | -1.8 | 51.9 | 74.6 |
| Vienna | 4.9 | 3.5 | -1.3 | 42.1 | 70.2 |
| New York | 5.0 | 4.2 | -2.3 | 92.5 | no data |
| Seville | 5.2 | 16.2 | 6.1 | 56.3 | 202.0 |
| Prague | 5.8 | 2.7 | -2.4 | 25.4 | 51.4 |
| Los Angeles | 8.8 | 20.0 | 9.4 | 83.6 | no data |
| Chicago | 9.7 | -0.2 | -7.3 | 50.5 | no data |
| Hong Kong | 10.7 | 18.7 | 14.6 | 33.2 | 145.8 |
| Buenos Aires | 19.2 | 30.1 | 20.2 | 134.4 | 272.7 |
| Singapore | 21.5 | 30.6 | 24.3 | 221.6 | no data |
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 January: weather, daylight, holidays". https://citybymonth.com/cities/japan/hiroshima/january/. Last updated 5 November 2026.