Live Weather & Forecast
Weather in Mattawa
Ontario, Canada · Real-time conditions & 3-day outlook
5°C
Feels like 2°C
41°F / Feels 35°F
Sunny
Mattawa, Ontario
🌞 Daytime
Updated: 2026-04-25 07:15
Humidity
53%
Wind
10.8 km/h E
Wind Gust
14.1 km/h
Pressure
1017 mb
Visibility
10 km
UV Index
0.1
(Low)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
-4.6°C
Wind Degree
96°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
154.8 μg/m³
NO₂
2.1 μg/m³
O₃
78 μg/m³
SO₂
2.1 μg/m³
PM 2.5
2.8 μg/m³
PM 10
3 μg/m³
Today's Hourly Forecast
24-hour breakdown for Mattawa, Ontario
12 AM
7°
Clear
1 AM
6°
Clear
2 AM
6°
Clear
3 AM
5°
Clear
4 AM
5°
Clear
5 AM
4°
Clear
6 AM
4°
Clear
7 AM
5°
Sunny
8 AM
7°
Sunny
9 AM
8°
Sunny
10 AM
10°
Sunny
11 AM
12°
Sunny
12 PM
13°
Sunny
1 PM
14°
Sunny
2 PM
15°
Sunny
3 PM
16°
Sunny
4 PM
16°
Sunny
5 PM
14°
Sunny
6 PM
12°
Sunny
7 PM
9°
Sunny
8 PM
6°
Sunny
9 PM
5°
Clear
10 PM
4°
Clear
11 PM
3°
Clear
3-Day Forecast
Daily overview for Mattawa, Ontario
Today
Sunny
16°
/
2°
🌧️ 0% chance of rain
💧 Avg. humidity: 40%
💨 Max wind: 16.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 4.7
🌅 Sunrise: 06:10 AM
🌇 Sunset: 08:16 PM
🌙 Waxing Gibbous
🌑 Moon: 60% lit
Sun, Apr 26
Sunny
18°
/
0°
🌧️ 0% chance of rain
💧 Avg. humidity: 57%
💨 Max wind: 5.8 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 6
🌅 Sunrise: 06:09 AM
🌇 Sunset: 08:17 PM
🌙 Waxing Gibbous
🌑 Moon: 70% lit
Mon, Apr 27
Sunny
20°
/
3°
🌧️ 0% chance of rain
💧 Avg. humidity: 60%
💨 Max wind: 16.9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 6.3
🌅 Sunrise: 06:07 AM
🌇 Sunset: 08:18 PM
🌙 Waxing Gibbous
🌑 Moon: 79% lit
Best Time to Visit Mattawa
Plan your trip to Mattawa, Canada around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Mattawa?
Current conditions in Mattawa: Sunny, temperature 5°C, humidity 53%.
What is the best time to visit Mattawa?
The best time to visit Mattawa is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Mattawa?
Mattawa is located at approximately 46.3° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Mattawa?
The wettest period in Mattawa is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Mattawa?
For visits to Mattawa during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Mattawa in 2026?
View the 2026 public holidays for Mattawa on our Holidays page.
What are the GPS coordinates used for the weather forecast in Mattawa?
The weather forecast for Mattawa uses coordinates 46.3173, -78.7033.
What is the current temperature outside in Mattawa?
The current outdoor temperature in Mattawa is 5°C (41°F) with sunny.
What is the hourly weather forecast for Mattawa today?
Today's hour-by-hour weather breakdown for Mattawa is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in Mattawa tomorrow hour by hour?
Tomorrow's forecast for Mattawa shows a high of 18°C and a low of 0°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Mattawa?
Rain is not expected in Mattawa today. Current forecast shows no significant rain probability.
Is it going to rain today in Mattawa?
No, rain is not forecast for Mattawa today. Current conditions show clear to partly cloudy skies.