Guelph
August
Weather in Guelph for August 2025
Your guide to Guelph weather in August - trends and predictions
In general, the average temperature in Guelph at the beginning of August is 25 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 24.4 °C by the end of August.
The climate of Guelph in August is notably wet, with an average of 15 rainy days.
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16
Dry days
15
Rainy days
0
Snow days
24°/13°
Temperatures
19 km/h
Avg max wind
77 %
Avg humidity
Guelph in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2  26° | 3 28° | ||||
| 4 26° | 5 24° | 6  23° | 7 23° | 8 23° | 9  26° | 10 21° |
| 11 20° | 12 23° | 13 23° | 14 25° | 15 23° | 16 26° | 17 24° |
| 18  20° | 19 21° | 20 23° | 21 22° | 22 23° | 23 22° | 24 25° |
| 25  26° | 26 25° | 27  26° | 28 25° | 29 23° | 30 23° | 31 23° |
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Temperatures trend during August in Guelph
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Overcast | 25° /15° | 0.5 mm | 6 | |
| 2 Aug. | Patchy rain possible | 26° /16° | 2.7 mm | 6 | |
| 3 Aug. | Patchy rain possible | 28° /16° | 0.8 mm | 6 | |
| 4 Aug. | Patchy rain possible | 26° /16° | 0.2 mm | 7 | |
| 5 Aug. | Overcast | 24° /15° | 1.2 mm | 5 | |
| 6 Aug. | Moderate or heavy rain shower | 23° /13° | 2.8 mm | 5 | |
| 7 Aug. | Patchy rain possible | 23° /13° | 5.1 mm | 6 | |
| 8 Aug. | Overcast | 23° /13° | 0.3 mm | 5 | |
| 9 Aug. | Partly cloudy | 26° /14° | 0.9 mm | 6 | |
| 10 Aug. | Moderate rain at times | 21° /13° | 1.9 mm | 5 | |
| 11 Aug. | Overcast | 20° /11° | 1.4 mm | 5 | |
| 12 Aug. | Moderate or heavy rain shower | 23° /13° | 5.3 mm | 6 | |
| 13 Aug. | Patchy rain possible | 23° /12° | 0.1 mm | 5 | |
| 14 Aug. | Overcast | 25° /13° | 0.3 mm | 6 | |
| 15 Aug. | Moderate rain at times | 23° /15° | 6.7 mm | 6 | |
| 16 Aug. | Overcast | 26° /15° | 0.7 mm | 6 | |
| 17 Aug. | Patchy rain possible | 24° /16° | 6.9 mm | 5 | |
| 18 Aug. | Heavy rain at times | 20° /14° | 4.4 mm | 5 | |
| 19 Aug. | Overcast | 21° /11° | 0 mm | 5 | |
| 20 Aug. | Patchy rain possible | 23° /10° | 0.1 mm | 6 | |
| 21 Aug. | Overcast | 22° /11° | 0 mm | 6 | |
| 22 Aug. | Overcast | 23° /12° | 0 mm | 6 | |
| 23 Aug. | Moderate or heavy rain shower | 22° /13° | 11.6 mm | 6 | |
| 24 Aug. | Patchy rain possible | 25° /14° | 1.6 mm | 6 | |
| 25 Aug. | Fog | 26° /14° | 0.6 mm | 7 | |
| 26 Aug. | Patchy rain possible | 25° /11° | 0.1 mm | 6 | |
| 27 Aug. | Cloudy | 26° /14° | 0 mm | 6 | |
| 28 Aug. | Partly cloudy | 25° /12° | 4.9 mm | 6 | |
| 29 Aug. | Mist | 23° /11° | 0.1 mm | 6 | |
| 30 Aug. | Overcast | 23° /10° | 0.4 mm | 5 | |
| 31 Aug. | Partly cloudy | 23° /10° | 2.6 mm | 6 | |
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Important Notice
Our weather forecast for Guelph in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Guelph forecast closer to your planned date for the most up-to-date weather information.
Guelph in August - FAQ
What are the expected maximum and minimum temperatures in Guelph during August?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Guelph during August?
Moderate rainfall is anticipated in Guelph during August, with a total of 78.5 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Guelph during August?
The average wind speed in Guelph during August is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
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