Perth, Canada — Weather in May 2027

Climate Overview

Perth, Canada in May has mild conditions, with highs averaging 18.9°C (66°F) and noticeably cooler mornings. Rain falls on about 12 days this month. Temperatures drop noticeably between day and night.

This month falls at the end of Spring.

Daily highs in May gradually rise from around 15°C (60°F) at the start to 23°C (73°F) by month's end.

Rainfall is heaviest during the first third of the month, while the middle tends to be drier.

Expect around 7.5h of sunshine at the start of May, increasing to 11.4h by the end.

The warmest days tend to fall around the 28th, averaging 22.9°C (73°F).

Compared to April, this month is about 8°C warmer with 1 fewer rainy days. Temperatures will rise further into June.

Monthly May Averages

Temperature

19°C / 8°C

Feels Like

18°C / 6°C

Rain

12 days · 85 mm

Sunshine

10.3h / day

Humidity

69% — Humid

Wind

16 km/h

Wind Direction

W (273°)

Gusts

36 km/h

Daylight

14.9 h

Cloud Cover

62%

Clear Sky Days

4.2

UV Index

5.7 — High

Dew Point

8°C — Dry

Moon Phase

Waxing Gibbous · 66%

Snow Days

1 days · 0.3 cm

Frost Days

1 days

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 05:38

Daylight 14.8h

Sunset 20:28

What to Expect

Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain usually comes in shorter passing showers rather than all-day rain.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	-3°C / -10°C	-7°C / -15°C	10days (73 mm) Wet	5h Fair	77% Humid	1.8 Low	Poor	View Details
February	-1°C / -10°C	-6°C / -15°C	10days (71 mm) Wet	6h Fair	75% Muggy	2.9 Moderate	Poor	View Details
March	4°C / -5°C	0°C / -9°C	11days (80 mm) Wet	7.4h Good	70% Muggy	3.8 Moderate	Poor	View Details
April	11°C / 1°C	8°C / -3°C	13days (105 mm) Wet	8.3h Good	67% Muggy	4.6 Moderate	Poor	View Details
May best	19°C / 8°C	18°C / 6°C	12days (85 mm) Wet	10.3h Excellent	69% Muggy	5.7 High	Good	View Details
June best	24°C / 14°C	24°C / 13°C	13days (89 mm) Wet	11.1h Excellent	70% Muggy	6.3 High	Excellent	View Details
July best	27°C / 18°C	28°C / 18°C	11days (92 mm) Wet	12.1h Excellent	71% Muggy	6.6 High	Excellent	View Details
August best	26°C / 17°C	27°C / 18°C	12days (92 mm) Wet	10.6h Excellent	75% Muggy	5.8 High	Excellent	View Details
September best	22°C / 14°C	22°C / 13°C	8days (51 mm) Wet	9.3h Good	75% Muggy	4.9 Moderate	Excellent	View Details
October	15°C / 8°C	12°C / 5°C	13days (103 mm) Wet	6.6h Fair	77% Humid	3.1 Moderate	Fair	View Details
November	6°C / 0°C	2°C / -4°C	11days (74 mm) Wet	5.2h Fair	78% Humid	2 Low	Poor	View Details
December	0°C / -6°C	-4°C / -11°C	12days (79 mm) Wet	4.1h Fair	78% Humid	1.5 Low	Poor	View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

Temperatures drop significantly at night, so pack layers you can add or remove throughout the day.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Warm evening layerUmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

Expand all

Is May a good time to visit Perth?

May is typically good for visiting Perth, with average highs of 19°C (66°F) and around 12 rainy days. Perth, Canada in May has mild conditions, with highs averaging 18.9°C (66°F) and noticeably cooler mornings. Rain falls

Does it rain a lot in Perth in May?

Perth typically sees around 12 rainy days in May with 85 mm (3.3 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Perth in May?

Nights in Perth during May are cool at around 8°C (47°F). Bring a jacket or sweater for evenings.

What should I pack for Perth in May?

With highs of 19°C (66°F) and lows of 8°C (47°F) in May, we recommend: Warm evening layer, Umbrella, Waterproof jacket, Comfortable walking shoes. Comfortable walking shoes are essential.

Is May among the best months weather-wise in Perth?

Yes, May offers some of the best weather conditions in Perth with comfortable temperatures and lower chances of rain.

What is the UV index in Perth in May?

The average UV index in Perth during May is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

How many hours of daylight are there in Perth in May?

Perth gets approximately 15 hours of daylight per day in May, with around 10 hours of sunshine.

Does it snow in Perth in May?

Yes, Perth typically sees around 1 snow days in May with roughly 0 cm (0 in) of snowfall.

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