Oshawa
May
Weather in Oshawa for May 2026
Your guide to Oshawa weather in May - trends and predictions
In general, the average temperature in Oshawa at the beginning of May is 12.3 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 17.4 °C by the end of May.
Oshawa experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 155.5 mm.
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Temperatures
Rain 🌧️
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10
Dry days
21
Rainy days
0
Snow days
15°/8°
Temperatures
20 km/h
Avg max wind
78 %
Avg humidity
Oshawa Weather May
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Temperatures trend during May in Oshawa
See the weather trend as well as the moving average line
May weather in Oshawa day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Heavy rain at times | 10° /4° | 15.5 mm | 2 | |
| 2 May |  Patchy rain possible | 11° /5° | 0.3 mm | 3 | |
| 3 May | Heavy rain at times | 11° /5° | 2.3 mm | 3 | |
| 4 May | Patchy rain possible | 12° /5° | 1.7 mm | 3 | |
| 5 May | Patchy rain possible | 13° /7° | 1 mm | 3 | |
| 6 May |  Partly cloudy | 14° /7° | 6.8 mm | 4 | |
| 7 May |  Moderate rain at times | 15° /7° | 4.2 mm | 3 | |
| 8 May | Partly cloudy | 15° /7° | 0.3 mm | 4 | |
| 9 May | Partly cloudy | 12° /6° | 0.8 mm | 3 | |
| 10 May |  Sunny | 16° /5° | 0.1 mm | 4 | |
| 11 May | Partly cloudy | 14° /6° | 0.1 mm | 4 | |
| 12 May | Partly cloudy | 17° /7° | 0.1 mm | 5 | |
| 13 May |  Cloudy | 16° /10° | 21.8 mm | 4 | |
| 14 May |  Overcast | 14° /9° | 8.9 mm | 3 | |
| 15 May | Sunny | 17° /8° | 0.1 mm | 4 | |
| 16 May | Overcast | 17° /10° | 4.6 mm | 4 | |
| 17 May | Sunny | 14° /7° | 6.6 mm | 4 | |
| 18 May | Sunny | 14° /7° | 0.1 mm | 4 | |
| 19 May | Patchy rain possible | 17° /7° | 1.5 mm | 4 | |
| 20 May | Moderate or heavy rain shower | 16° /8° | 10.9 mm | 4 | |
| 21 May | Partly cloudy | 16° /9° | 11.7 mm | 4 | |
| 22 May | Cloudy | 15° /9° | 26 mm | 4 | |
| 23 May | Sunny | 14° /8° | 4.3 mm | 4 | |
| 24 May | Moderate or heavy rain shower | 16° /8° | 1.9 mm | 4 | |
| 25 May | Sunny | 15° /6° | 3.7 mm | 4 | |
| 26 May | Sunny | 18° /8° | 0 mm | 5 | |
| 27 May | Sunny | 17° /9° | 2 mm | 4 | |
| 28 May | Partly cloudy | 18° /10° | 1.1 mm | 5 | |
| 29 May | Sunny | 16° /10° | 14.8 mm | 5 | |
| 30 May | Sunny | 19° /10° | 0.6 mm | 5 | |
| 31 May | Sunny | 19° /10° | 1.7 mm | 5 | |
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Important Notice
Our weather forecast for Oshawa 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 Oshawa forecast closer to your planned date for the most up-to-date weather information.
Change Month
Oshawa in May - FAQ
What are the expected maximum and minimum temperatures in Oshawa during May?
During May, expect a variety of temperatures with highs around 15° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in Oshawa during May?
Significant rainfall exceeding 155.5 mm is expected in Oshawa during May, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Oshawa during May?
The average wind speed in Oshawa during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Oshawa
Explore the daily rainfall trends and prepare for Oshawas May weather 💧
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