Hiroshima in December
In December, Hiroshima has 54.0 mm (2.13 in) of rain, a daily high of 12.1 °C (53.8 °F) and a daily low of 4.0 °C (39.2 °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: December misses our rule: days are 3.9 °C under our 16 °C and nights are 4.0 °C under our 8 °C. Expect 5.7 rain days.
What December is like in Hiroshima
- Lights glow along Peace Boulevard and across the city centre from early December into January for Hiroshima Dreamination. Source: Hiroshima Dreamination (Hiroshima Light-up Project Committee), checked .
- Plump, sweet Kusatsu oysters that smell of the sea are on sale from December to March. Kusatsu is known as the place where oyster farming began. Source: City of Hiroshima, checked .
- Wintersweet opens glossy yellow flowers at Shukkeien from late December. The petals are so clear they look like wax, which gave the plant its name. Source: Shukkeien (Hiroshima Prefecture, official site), checked .
Key figures
Weather in December, 1991-2020 means
- Daily high
- 12.1 °C (53.8 °F)
- Daily low
- 4.0 °C (39.2 °F)
- Rain
- 54.0 mm (2.13 in) in the month
- Sunshine
- 140.6 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 December the sea off Hiroshima averages 17.0 °C (62.6 °F), 3.2 °C cooler than in November.
Our 1991-2020 mean of NOAA OISST v2.1, checked .
Daylight on 15 December 2026
- Sunrise
- 07:09 local time
- Sunset
- 17:01 local time
- Day length
- 9 h 53 min
Day length 1-31 December: 10 h 02 min to 9 h 54 min, -8 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 | December | Rank |
|---|---|---|
| Daily high | 12.1 °C | 3rd coldest |
| Daily low | 4.0 °C | 3rd coldest |
| Rain | 54.0 mm | 2nd driest |
| Sunshine | 140.6 hours | 3rd least sunny |
| Day length | 9 h 53 min | shortest |
Equal values share a rank. How we rank months
Sunshine share: 46% of the 307.0 hours from sunrise to sunset in December. How we compute sunshine share
Hiroshima in December, on average: 5.7 rain days (1 mm or more).
WMO climate normals 1991-2020, as above, checked .
Day length: NOAA solar equations, checked .
Public holidays this month
December 2026: none.
December 2027: none.
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 December by mean daily high. How we rank cities
Closest high and low in December: Tokyo (0.2 °C apart), Rome (0.7), Osaka (0.8).
| City | Gap from Hiroshima, °C | High, °C | Low, °C | Rain, mm | Sunshine, hours |
|---|---|---|---|---|---|
| Hiroshima (this page) | — | 12.1 | 4.0 | 54.0 | 140.6 |
| Tokyo (closest) | 0.2 | 12.0 | 3.8 | 57.9 | 174.4 |
| Rome (closest) | 0.7 | 12.7 | 4.7 | no data | no data |
| Osaka (closest) | 0.8 | 12.3 | 5.3 | 55.5 | 152.1 |
| Madrid | 1.0 | 10.4 | 3.7 | 42.4 | no data |
| London | 1.6 | 9.0 | 3.9 | 58.6 | no data |
| Paris | 2.2 | 8.0 | 3.8 | 62.0 | 56.0 |
| Barcelona | 2.8 | 14.7 | 6.9 | 37.7 | 104.5 |
| Amsterdam | 3.7 | 6.9 | 1.9 | 81.7 | 58.2 |
| Seville | 4.1 | 16.8 | 7.4 | 77.2 | 185.9 |
| New York | 4.2 | 6.8 | 1.0 | 111.3 | no data |
| Berlin | 5.9 | 4.4 | -0.1 | 44.2 | 41.3 |
| Munich | 6.1 | 4.8 | -0.8 | 58.5 | 66.4 |
| Los Angeles | 6.3 | 19.7 | 9.0 | 63.0 | no data |
| Vienna | 6.3 | 4.0 | -0.4 | 46.8 | 57.1 |
| Prague | 6.9 | 3.5 | -1.2 | 28.1 | 43.8 |
| Chicago | 8.9 | 2.6 | -4.2 | 53.6 | no data |
| Hong Kong | 10.3 | 20.4 | 16.2 | 28.8 | 161.6 |
| Buenos Aires | 15.7 | 29.0 | 18.5 | 122.8 | 267.4 |
| Singapore | 19.4 | 30.5 | 24.3 | 331.9 | 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 December: weather, daylight, holidays". https://citybymonth.com/cities/japan/hiroshima/december/. Last updated 5 November 2026.