Monday, October 19, 2026 · Japan
Skin weather in Hiroshima UV index & humidity today
What today’s weather in Hiroshima does to your skin – based on current forecast data for UV, humidity and air quality.
Updated Oct 19, 2026, 5:10 PM local time
Today · Temperature19 to 23 °C
Low and high-
UV index
1.9
low
Peak UV index today: 1.9 – low.
Up to UV 2, the WHO says most people need no sun protection.
-
Humidity
90%outdoors
humid
Average humidity today: 90%.
Humid air – lighter textures often feel more comfortable today.
-
Pollen
–
No pollen forecast is available for this region.
-
Air quality
36EAQI
fair
European Air Quality Index up to 36 – fair. Fine dust (PM2.5) averages 6.6 µg/m³.
Clean air – no extra cleansing needed.
Tomorrow
- 21 to 27 °C
- UV 5.3 · moderate
- 88% · humid
- Air quality: moderate
Skin climate in Hiroshima through the year
When the air in Hiroshima is driest and when the sun is strongest – based on climate data from recent years.
- Indoor air in Hiroshima is driest in January: heated to 21 °C, humidity indoors drops to around 27%.
- From November to March, the average daily temperature stays below 15 °C – the time when heating is usually on.
- From March to October, the midday sun climbs higher than 45° – your shadow is then shorter than you are. According to the WHO shadow rule, UV is then usually high.
- July brings the most sunshine, with around 312 hours.
| Month | Sunshine | Midday sun | Humidity outdoors | Indoors when heated | Avg. high |
|---|---|---|---|---|---|
| Jan | 231 h | 34° | 71% | 27% | 10.2 °C |
| Feb | 222 h | 42° | 70% | 28% | 11.1 °C |
| Mar | 255 h | 53° | 69% | 38% | 16.6 °C |
| Apr | 262 h | 65° | 66% | – | 21.5 °C |
| May | 276 h | 74° | 69% | – | 24.6 °C |
| Jun | 260 h | 79° | 77% | – | 28.2 °C |
| Jul | 312 h | 77° | 78% | – | 32.6 °C |
| Aug | 305 h | 69° | 77% | – | 33.6 °C |
| Sep | 258 h | 58° | 77% | – | 31 °C |
| Oct | 254 h | 46° | 73% | – | 24.6 °C |
| Nov | 240 h | 36° | 74% | 46% | 18.9 °C |
| Dec | 224 h | 32° | 73% | 31% | 11.9 °C |
Indoors when heated = humidity when outdoor air is warmed to 21 °C (only months with a daily average below 15 °C). Midday sun = sun angle in mid-month.
Frequently asked questions
What is the UV index in Hiroshima today?
Today (October 19) the UV index in Hiroshima reaches up to 1.9 – low. Up to UV 2, the WHO says most people need no sun protection.
How dry is the air in Hiroshima today?
Average humidity today: 90%. Humid air – lighter textures often feel more comfortable today.
When is the air driest in Hiroshima?
Indoor air in Hiroshima is driest in January: heated to 21 °C, humidity indoors drops to around 27%. From November to March, the average daily temperature stays below 15 °C – the time when heating is usually on.
When is UV strongest in Hiroshima?
From March to October, the midday sun climbs higher than 45° – your shadow is then shorter than you are. According to the WHO shadow rule, UV is then usually high. July brings the most sunshine, with around 312 hours.
Your skin weather, every morning.
Lumée reads UV, humidity, pollen and air quality for your location and turns them into skincare that fits this exact day.
Skin weather nearby
All cities →Data: WDTEC GmbH’s own weather servers – temperature, UV index and humidity from weather models, air quality and pollen from the Copernicus Atmosphere Monitoring Service (CAMS). Ratings: UV per WHO, air quality per European Air Quality Index, pollen per NAB. Skincare tips are general recommendations and do not replace medical advice.