Sunday, October 18, 2026 · Cook Islands
Skin weather in Rarotonga UV index & humidity today
What today’s weather in Rarotonga 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 · Temperature20 to 22 °C
Low and high-
UV index
2
low
Peak UV index today: 2 – 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
19EAQI
good
European Air Quality Index up to 19 – good. Fine dust (PM2.5) averages 5.6 µg/m³.
Clean air – no extra cleansing needed.
Tomorrow
- 19 to 20 °C
- UV 7.2 · high
- 73% · humid
- Air quality: fair
Skin climate in Rarotonga through the year
When the air in Rarotonga is driest and when the sun is strongest – based on climate data from recent years.
- In Rarotonga the average daily temperature stays above 15 °C all year – heating is rarely needed. Outdoor humidity ranges between 74% and 81%.
- From July to May, 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.
- November brings the most sunshine, with around 341 hours.
| Month | Sunshine | Midday sun | Humidity outdoors | Indoors when heated | Avg. high |
|---|---|---|---|---|---|
| Jan | 326 h | 90° | 81% | – | 24.4 °C |
| Feb | 285 h | 82° | 81% | – | 24.9 °C |
| Mar | 305 h | 72° | 81% | – | 25.2 °C |
| Apr | 300 h | 59° | 78% | – | 24.4 °C |
| May | 253 h | 50° | 79% | – | 23.5 °C |
| Jun | 258 h | 45° | 74% | – | 22.5 °C |
| Jul | 270 h | 47° | 74% | – | 21.9 °C |
| Aug | 279 h | 55° | 74% | – | 21.3 °C |
| Sep | 304 h | 67° | 75% | – | 21.5 °C |
| Oct | 322 h | 78° | 75% | – | 21.7 °C |
| Nov | 341 h | 88° | 76% | – | 22.1 °C |
| Dec | 325 h | 88° | 81% | – | 23.4 °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 Rarotonga today?
Today (October 18) the UV index in Rarotonga reaches up to 2 – low. Up to UV 2, the WHO says most people need no sun protection.
How dry is the air in Rarotonga today?
Average humidity today: 90%. Humid air – lighter textures often feel more comfortable today.
When is the air driest in Rarotonga?
In Rarotonga the average daily temperature stays above 15 °C all year – heating is rarely needed. Outdoor humidity ranges between 74% and 81%.
When is UV strongest in Rarotonga?
From July to May, 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. November brings the most sunshine, with around 341 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.