UV radiation is typically strongest for a few hours around noon. This is because the sun is at its highest point in the sky at this time, resulting in more direct exposure to UV rays.
Peak UV Times
While the exact time varies slightly based on factors like latitude, time of year, and weather conditions, several sources indicate that the highest UV index generally occurs between 10 a.m. and 2 p.m.. Some studies show that a significant portion of daily UV radiation—as much as 20-30%—is received between 11:00 a.m. and 1:00 p.m. (sun time). A substantial majority (75%) is received between 9:00 a.m. and 3:00 p.m. (sun time).
- Midday Peak: UV radiation peaks at midday, when the sun is highest in the sky.
- Morning and Afternoon Reduction: UV levels are lower in the early morning and late afternoon/evening.
- Summer Intensity: In summer months, UV intensity is generally higher throughout the day.
- Geographic Variation: Latitude significantly impacts UV levels; higher latitudes experience lower UV radiation.
It's crucial to remember that these times represent general trends. The specific peak time for your location can vary. Check local UV index forecasts for accurate information relevant to your area. When the UV level hits 3 (Moderate) or above, protective measures, such as using sunscreen and seeking shade, are recommended.
