Saint Catharines UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index7.6
- Avg Clouds50%
- Max Temp21.3 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Saint Catharines, Canada 
will reach a high of 7.6 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-21
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.
Saint Catharines's UV Index
The UV index in Saint Catharines varies throughout the year, typically higher in summer months, reaching levels around 6 to 8, indicating moderate to high ultraviolet radiation. In winter, the UV index often drops below 2, showing low exposure.
Weather Seasons
Saint Catharines experiences four distinct seasons: cold snowy winters, warm and humid summers, mild springs, and cool autumns. Summers can be hot with temperatures often above 25°C, while winters frequently dip below freezing, bringing snow and ice.
Saint Catharines's Climate
Compared to other parts of Canada, Saint Catharines generally has milder winters due to its location near the Great Lakes. It is warmer and less snowy than northern regions but experiences cooler temperatures than southern U.S. cities. Its climate is similar to nearby cities like Toronto and Hamilton.
Hourly UV Index Trend
See the UV index hour by hour for Saint Catharines. When the level is high, it's smart to find some shade.
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