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Penticton Weather in May
Penticton in May averages 17°C (63°F) during the day and 5°C (41°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Penticton in May
You can typically expect 10 days of rain this month, averaging around 61 mm (2.4 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Penticton in May
May in Penticton brings typical temperatures with highs around 17°C (63°F) and lows of 5°C (41°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Penticton in May
Expect a lot of sunshine this month, with about 238 hours of sun. These sunny conditions add to the overall experience.If you prefer dry days with pleasant temperatures, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Penticton Temperature in May
Min Temperature
5°C (41°F)
Max Temperature
17°C (63°F)
Chance of Rain
34%
Precipitation
61 mm (2.4 in)
Rainy days
10 days
Humidity
40% *
Sunshine
238 hours *
Percentage Sunshine
49% *
* Data from: Kelowna, Canada (43 KM, 27 Miles).
Penticton Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Penticton - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Penticton typically rise from around 18°C (64°F) at the start of May to approximately 23°C (73°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 10°C (50°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Penticton in May
Browse day-by-day weather records for Penticton spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Penticton historical weather extremes in May
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Penticton.
- On May 30, 1986, temperatures climbed to 34°C (93°F), marking the warmest May day on record.
- Penticton experienced its chilliest May day on May 6, 2002, reaching only 9°C (48°F).
- Penticton registered its coldest May night on May 9, 1999, with temperatures dropping to -3°C (27°F).
Best Places in Canada in May
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Penticton in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Penticton in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports10/10
Penticton 3-Day Forecast
More climate data for Penticton
Temperature Rainfall Sunshine Humidity
See the full Penticton climate overview or explore weather in Canada.
Popular in May
Where to go in May - average daytime high across popular destinations.
Niagara Falls
21°C (70°F) Montréal20°C (68°F) Ottawa20°C (68°F) Quebec City19°C (66°F) Calgary17°C (63°F) Vancouver16°C (61°F) Toronto16°C (61°F) Whistler11°C (52°F) Bucket list
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