Hamilton UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index7.3
- Avg Clouds13%
- Max Temp26.9 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Hamilton, Canada 
will reach a high of 7.3 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-14
Hourly Forecast Chart
Today's Safety Tips
Be careful! The sun's rays are strong. Try to stay in the shade between 10 a.m. and 4 p.m. Wear a hat, sunglasses, and reapply SPF 30+ sunscreen every 2 hours.
Hamilton's UV Index
Hamilton's UV index varies seasonally, reaching moderate to high levels during summer months and staying low during fall and winter. The peak UV index typically occurs in June and July.
Weather Seasons
Hamilton experiences four distinct seasons: cold, snowy winters; warm, humid summers; and mild springs and falls with variable rainfall. Snowfall is common from December to March, while summer temperatures often range from 20 to 30°C (68 to 86°F).
Hamilton's Climate
Compared to the wider Ontario region, Hamilton has a slightly milder climate due to its location near Lake Ontario, which moderates temperatures. Neighboring cities like Toronto have similar weather but may experience slightly warmer summers and colder winters.
Hourly UV Index Trend
See the UV index hour by hour for Hamilton. When the level is high, it's smart to find some shade.
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