Verdict: Good month
Hiroshima Weather in August
August runs warm in Hiroshima, with daily highs around 31°C (88°F) and nights near 24°C (75°F). Expect showers on roughly 13 days of the month — rarely trip-ruining, worth planning around. Overall, August is a solid month to visit Hiroshima.
Average high
31°C / 88°F
Average low
24°C / 75°F
Rain days
~13
Precipitation
253 mm
What to pack for Hiroshima in August
- Light, breathable clothing — linen and technical fabrics earn their keep
- High-SPF sunscreen, sunglasses, and a refillable water bottle
- Rain gear is non-negotiable — expect rain on roughly 13 days
- Quick-dry shoes — downpours are short but heavy
- Comfortable walking shoes — every guide on this site assumes you'll use them
August against the rest of the year
Warmest in Hiroshima: Aug (31°C / 88°F) · Coolest: Jan (9°C / 48°F) · Wettest: Jul (~17 rain days)
9°
1°
Jan
10°
1°
Feb
14°
4°
Mar
18°
8°
Apr
22°
13°
May
25°
18°
Jun
29°
23°
Jul
31°
24°
Aug
28°
21°
Sep
22°
13°
Oct
17°
8°
Nov
11°
2°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)