Guelph
May
Weather in Guelph for May 2025
Your guide to Guelph weather in May - trends and predictions
In general, the average temperature in Guelph at the beginning of May is 13.9 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.7 °C by the end of May.
Guelph sees moderate rainfall in May, averaging 7 rainy days.
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24
Dry days
7
Rainy days
0
Snow days
21°/6°
Temperatures
17 km/h
Avg max wind
72 %
Avg humidity
Guelph in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  13° | 2 11° | 3 12° | 4  13° | |||
| 5 15° | 6  17° | 7 16° | 8  19° | 9 14° | 10  17° | 11 16° |
| 12 19° | 13 20° | 14 15° | 15  20° | 16 19° | 17 17° | 18 20° |
| 19 22° | 20 19° | 21 23° | 22 21° | 23 21° | 24 19° | 25 19° |
| 26 21° | 27 21° | 28 19° | 29 21° | 30 21° | 31 23° |
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Temperatures trend during May in Guelph
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Moderate or heavy rain shower | 13° /4° | 3.2 mm | 3 | |
| 2 May | Moderate rain at times | 11° /3° | 2.8 mm | 3 | |
| 3 May | Moderate rain at times | 12° /5° | 3.4 mm | 3 | |
| 4 May | Patchy rain possible | 13° /7° | 0.6 mm | 3 | |
| 5 May | Patchy rain possible | 15° /6° | 0.4 mm | 4 | |
| 6 May | Overcast | 17° /4° | 0 mm | 5 | |
| 7 May | Moderate or heavy rain shower | 16° /6° | 4.8 mm | 4 | |
| 8 May | Cloudy | 19° /8° | 0.5 mm | 5 | |
| 9 May | Moderate or heavy rain shower | 14° /6° | 2.9 mm | 4 | |
| 10 May | Partly cloudy | 17° /7° | 0.5 mm | 5 | |
| 11 May | Overcast | 16° /8° | 1.4 mm | 4 | |
| 12 May | Partly cloudy | 19° /8° | 0.4 mm | 5 | |
| 13 May | Overcast | 20° /10° | 5.6 mm | 5 | |
| 14 May | Overcast | 15° /7° | 11.8 mm | 4 | |
| 15 May | Sunny | 20° /6° | 0 mm | 5 | |
| 16 May | Overcast | 19° /8° | 0.2 mm | 4 | |
| 17 May | Sunny | 17° /6° | 0.1 mm | 5 | |
| 18 May | Sunny | 20° /6° | 0 mm | 5 | |
| 19 May | Overcast | 22° /8° | 1.9 mm | 5 | |
| 20 May | Moderate or heavy rain shower | 19° /10° | 12.7 mm | 4 | |
| 21 May | Sunny | 23° /12° | 4.3 mm | 6 | |
| 22 May | Cloudy | 21° /12° | 1.1 mm | 5 | |
| 23 May | Overcast | 21° /9° | 0 mm | 6 | |
| 24 May | Patchy rain possible | 19° /8° | 0.2 mm | 5 | |
| 25 May | Sunny | 19° /5° | 0.7 mm | 5 | |
| 26 May | Sunny | 21° /5° | 0 mm | 6 | |
| 27 May | Sunny | 21° /10° | 1.6 mm | 5 | |
| 28 May | Sunny | 19° /9° | 1.1 mm | 5 | |
| 29 May | Sunny | 21° /8° | 0 mm | 5 | |
| 30 May | Sunny | 21° /8° | 0 mm | 6 | |
| 31 May | Sunny | 23° /9° | 0 mm | 6 | |
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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.
Guelph in May - FAQ
What are the expected maximum and minimum temperatures in Guelph during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 6°. 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 117.8 mm is expected in Guelph during May, occurring over more than 7 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 17 km/h, suggesting breezy to windy conditions, depending on your activities.
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