Guelph
May
Weather in Guelph for May 2026
Your guide to Guelph weather in May - trends and predictions
In general, the average temperature in Guelph at the beginning of May is 14.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 19 °C by the end of May.
Guelph experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 156.3 mm.
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Temperatures
Rain 🌧️
More
9
Dry days
22
Rainy days
0
Snow days
17°/7°
Temperatures
20 km/h
Avg max wind
75 %
Avg humidity
Guelph Weather May
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Temperatures trend during May in Guelph
See the weather trend as well as the moving average line
May weather in Guelph day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Moderate or heavy rain shower | 11° /3° | 22.3 mm | 3 | |
| 2 May | Moderate rain at times | 12° /3° | 1.9 mm | 3 | |
| 3 May | Moderate rain at times | 13° /4° | 2.2 mm | 3 | |
| 4 May |  Patchy rain possible | 14° /6° | 2 mm | 3 | |
| 5 May | Patchy rain possible | 15° /7° | 0.3 mm | 3 | |
| 6 May |  Overcast | 17° /6° | 16.2 mm | 4 | |
| 7 May | Moderate or heavy rain shower | 17° /6° | 3.2 mm | 4 | |
| 8 May |  Cloudy | 17° /6° | 0.3 mm | 4 | |
| 9 May | Moderate or heavy rain shower | 15° /4° | 1.9 mm | 4 | |
| 10 May |  Partly cloudy | 18° /4° | 0.3 mm | 4 | |
| 11 May | Overcast | 17° /6° | 1 mm | 4 | |
| 12 May | Partly cloudy | 22° /7° | 0.3 mm | 5 | |
| 13 May | Overcast | 18° /11° | 7.6 mm | 4 | |
| 14 May | Overcast | 16° /9° | 8.6 mm | 4 | |
| 15 May |  Sunny | 20° /8° | 2 mm | 5 | |
| 16 May | Overcast | 22° /9° | 4.9 mm | 5 | |
| 17 May | Sunny | 17° /7° | 7.2 mm | 4 | |
| 18 May | Sunny | 17° /6° | 0.8 mm | 4 | |
| 19 May | Overcast | 20° /6° | 1.3 mm | 5 | |
| 20 May | Moderate or heavy rain shower | 18° /7° | 8.5 mm | 4 | |
| 21 May | Sunny | 18° /10° | 19.5 mm | 4 | |
| 22 May | Cloudy | 17° /10° | 13 mm | 4 | |
| 23 May | Overcast | 17° /8° | 9.7 mm | 4 | |
| 24 May | Patchy rain possible | 16° /7° | 0.1 mm | 4 | |
| 25 May | Sunny | 17° /5° | 0.5 mm | 4 | |
| 26 May | Sunny | 20° /5° | 0 mm | 5 | |
| 27 May | Sunny | 20° /9° | 1.1 mm | 5 | |
| 28 May | Sunny | 18° /10° | 2.6 mm | 5 | |
| 29 May | Sunny | 18° /8° | 12.7 mm | 4 | |
| 30 May | Sunny | 20° /8° | 0 mm | 5 | |
| 31 May | Sunny | 20° /8° | 4.4 mm | 5 | |
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Important Notice
Our weather forecast for Guelph in May 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.
Change Month
Guelph in May - FAQ
What are the expected maximum and minimum temperatures in Guelph during May?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Guelph during May?
Significant rainfall exceeding 156.3 mm is expected in Guelph during May, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Guelph during May?
The average wind speed in Guelph during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Guelph
Explore the daily rainfall trends and prepare for Guelphs May weather 💧
UV exposure in Guelph during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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