15-Day Weather Forecast - Hiroshima
15-day weather forecast for Hiroshima: temperatures from 20°C (68°F) to 31°C (88°F). Average daily high 28°C (82°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
Hiroshima's 15-day outlook ranges from a low of 20°C to a high of 31°C, with an average daytime high near 28°C. That's 1° above the long-term average high of 27°C for this time of year. It continues a recent pattern — 15 of the last 28 days with published data have run warmer than normal. Air quality is currently Moderate (AQI 60), driven mainly by PM2.5 at 12 μg/m³.
Today vs Normal
The long-term average high for today is 27°C.
15 of the last 28 days with published data ran above normal.
That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Extended Outlook for Hiroshima
Over the next 15 days, Hiroshima is forecast to see temperatures ranging from 19°C to 31°C, averaging a daily high of 28°C. The extended outlook indicates significant rainfall totalling 70.3 mm spread across 12 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.