UV Index
UV Index
Today's UV index in New Haven, United States 
will be up to 8.4, indicating a very high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-21
With a UV index of 8.4 in New Haven, it's crucial to safeguard your skin from harmful UV rays. Protect yourself by minimizing sun exposure, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours.
New Haven's UV index varies throughout the year, reaching higher levels during summer months, often between 6 and 8, and lower levels in winter, usually around 1 to 2. The UV index peaks around noon when the sun is strongest.
New Haven experiences four distinct seasons with warm, humid summers and cold winters. Spring and fall are mild with moderate temperatures and occasional rain. Snow is common in winter, while summer sees frequent sunshine and thunderstorms.
Compared to the wider Northeastern United States, New Haven has similar weather patterns but tends to be slightly milder because it's near the coast. Neighboring states like Connecticut and Rhode Island share similar seasonal changes and UV levels.
See the UV index hour by hour for New Haven, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.