Hiroshima weather records
Record high and low temperatures for Hiroshima, by month, by season, and all-time, with the dates they occurred, across 1980–2026 of daily climate history. Its hottest day on record reached 36°C on 2018-08-04; its coldest fell to -9°C on 2026-02-08.
Records by month
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have ever been in each calendar month, so each column shows its record high and its record low. Tap a month for its full averages and typical range.
| Month | Daytime high | Overnight low |
|---|---|---|
| January | 17°C1997-01-01
-3°C2016-01-24
|
12°C1989-01-19
-8°C1982-01-02
|
| February | 20°C2021-02-21
-4°C1981-02-26
|
14°C2010-02-25
-9°C2026-02-08
|
| March | 23°C2025-03-26
1°C2015-03-10
|
14°C2015-03-31
-6°C1984-03-04
|
| April | 28°C1998-04-29
6°C2020-04-12
|
20°C1983-04-28
-4°C1981-04-02
|
| May | 30°C2019-05-25
12°C2008-05-10
|
21°C2004-05-30
2°C1980-05-01
|
| June | 32°C2025-06-30
17°C2015-06-05
|
26°C2005-06-27
9°C1981-06-01
|
| July | 36°C2004-07-30
20°C1986-07-08
|
27°C2002-07-25
16°C1992-07-01
|
| August | 36°C2018-08-04
22°C2015-08-31
|
28°C2023-08-08
16°C1981-08-05
|
| September | 35°C2023-09-04
16°C2008-09-29
|
27°C2020-09-02
7°C1987-09-27
|
| October | 29°C2024-10-01
10°C1997-10-31
|
23°C2016-10-02
1°C1986-10-30
|
| November | 25°C2023-11-02
6°C2008-11-19
|
18°C2020-11-19
-3°C1981-11-09
|
| December | 20°C2018-12-04
0°C1980-12-29
|
13°C1992-12-07
-6°C1981-12-24
|
Records by season
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have reached in each meteorological season (Northern Hemisphere, each a three-month span).
| Season | Daytime high | Overnight low |
|---|---|---|
| Winter (Dec–Feb) | 20°C2021-02-21
-4°C1981-02-26
|
14°C2010-02-25
-9°C2026-02-08
|
| Spring (Mar–May) | 30°C2019-05-25
1°C2015-03-10
|
21°C2004-05-30
-6°C1984-03-04
|
| Summer (Jun–Aug) | 36°C2018-08-04
17°C2015-06-05
|
28°C2023-08-08
9°C1981-06-01
|
| Autumn (Sep–Nov) | 35°C2023-09-04
6°C2008-11-19
|
27°C2020-09-02
-3°C1981-11-09
|
All-time records
The most extreme value Hiroshima has recorded for each metric across its entire history.
High
Low
Feels-like
Humidity
Wind
Gust
Precip
For rainfall, the “driest” figure is the longest run of consecutive days without measurable rain, dated to when that dry spell began.