Sunday, October 18, 2026 · United States
Skin weather in Honolulu UV index & humidity today
What today’s weather in Honolulu does to your skin – based on current forecast data for UV, humidity and air quality.
Updated Oct 18, 2026, 10:10 PM local time
Today · Temperature25 to 28 °C
Low and high-
UV index
7.5
very high
Peak UV index today: 7.5 – very high.
Very high UV: the WHO advises avoiding the midday sun and reapplying sun protection regularly.
-
Humidity
72%outdoors
humid
Average humidity today: 72%.
Humid air – lighter textures often feel more comfortable today.
-
Pollen
–
No pollen forecast is available for this region.
-
Air quality
31EAQI
fair
European Air Quality Index up to 31 – fair. Fine dust (PM2.5) averages 9.8 µg/m³.
Clean air – no extra cleansing needed.
Tomorrow
- 24 to 28 °C
- UV 7.5 · high
- 74% · humid
- Air quality: fair
Skin climate in Honolulu through the year
When the air in Honolulu is driest and when the sun is strongest – based on climate data from recent years.
- In Honolulu the average daily temperature stays above 15 °C all year – heating is rarely needed. Outdoor humidity ranges between 71% and 77%.
- From January to November, 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 383 hours.
| Month | Sunshine | Midday sun | Humidity outdoors | Indoors when heated | Avg. high |
|---|---|---|---|---|---|
| Jan | 300 h | 47° | 76% | – | 24.7 °C |
| Feb | 282 h | 55° | 74% | – | 24.3 °C |
| Mar | 321 h | 66° | 75% | – | 24.6 °C |
| Apr | 339 h | 78° | 74% | – | 25.3 °C |
| May | 374 h | 87° | 73% | – | 26.4 °C |
| Jun | 374 h | 88° | 71% | – | 27.2 °C |
| Jul | 383 h | 90° | 72% | – | 27.7 °C |
| Aug | 365 h | 82° | 71% | – | 28.1 °C |
| Sep | 334 h | 71° | 71% | – | 28.2 °C |
| Oct | 326 h | 59° | 73% | – | 27.6 °C |
| Nov | 296 h | 50° | 74% | – | 26.4 °C |
| Dec | 290 h | 45° | 77% | – | 25.2 °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 Honolulu today?
Today (October 18) the UV index in Honolulu reaches up to 7.5 – very high. Very high UV: the WHO advises avoiding the midday sun and reapplying sun protection regularly.
How dry is the air in Honolulu today?
Average humidity today: 72%. Humid air – lighter textures often feel more comfortable today.
When is the air driest in Honolulu?
In Honolulu the average daily temperature stays above 15 °C all year – heating is rarely needed. Outdoor humidity ranges between 71% and 77%.
When is UV strongest in Honolulu?
From January to November, 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 383 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.