Monday, October 19, 2026 · Cambodia
Skin weather in Siem Reap UV index & humidity today
What today’s weather in Siem Reap does to your skin – based on current forecast data for UV, humidity and air quality.
Updated Oct 19, 2026, 3:10 PM local time
Today · Temperature25 to 32 °C
Low and high-
UV index
8.1
very high
Peak UV index today: 8.1 – very high.
Very high UV: the WHO advises avoiding the midday sun and reapplying sun protection regularly.
-
Humidity
86%outdoors
humid
Average humidity today: 86%.
Humid air – lighter textures often feel more comfortable today.
-
Pollen
–
No pollen forecast is available for this region.
-
Air quality
33EAQI
fair
European Air Quality Index up to 33 – fair. Fine dust (PM2.5) averages 4.4 µg/m³.
Clean air – no extra cleansing needed.
Tomorrow
- 25 to 33 °C
- UV 8.1 · very high
- 83% · humid
- Air quality: fair
Skin climate in Siem Reap through the year
When the air in Siem Reap is driest and when the sun is strongest – based on climate data from recent years.
- In Siem Reap the average daily temperature stays above 15 °C all year – heating is rarely needed. Outdoor humidity ranges between 69% and 85%.
- All year round the midday sun in Siem Reap climbs higher than 45° – your shadow is shorter than you are. According to the WHO shadow rule, UV is then usually high.
- March brings the most sunshine, with around 340 hours.
| Month | Sunshine | Midday sun | Humidity outdoors | Indoors when heated | Avg. high |
|---|---|---|---|---|---|
| Jan | 313 h | 55° | 70% | – | 30.2 °C |
| Feb | 299 h | 63° | 69% | – | 32.3 °C |
| Mar | 340 h | 74° | 69% | – | 33.9 °C |
| Apr | 330 h | 86° | 70% | – | 34.8 °C |
| May | 321 h | 85° | 76% | – | 33.8 °C |
| Jun | 293 h | 80° | 76% | – | 33.7 °C |
| Jul | 260 h | 82° | 80% | – | 32.2 °C |
| Aug | 294 h | 90° | 80% | – | 32.7 °C |
| Sep | 215 h | 79° | 85% | – | 31 °C |
| Oct | 260 h | 67° | 83% | – | 31.1 °C |
| Nov | 281 h | 58° | 79% | – | 30.7 °C |
| Dec | 302 h | 53° | 74% | – | 30 °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 Siem Reap today?
Today (October 19) the UV index in Siem Reap reaches up to 8.1 – very high. Very high UV: the WHO advises avoiding the midday sun and reapplying sun protection regularly.
How dry is the air in Siem Reap today?
Average humidity today: 86%. Humid air – lighter textures often feel more comfortable today.
When is the air driest in Siem Reap?
In Siem Reap the average daily temperature stays above 15 °C all year – heating is rarely needed. Outdoor humidity ranges between 69% and 85%.
When is UV strongest in Siem Reap?
All year round the midday sun in Siem Reap climbs higher than 45° – your shadow is shorter than you are. According to the WHO shadow rule, UV is then usually high. March brings the most sunshine, with around 340 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.