Carleton, Canada — Weather in May 2027

Climate Overview

Carleton, Canada in May has mild conditions, with highs averaging 13.8°C (57°F) and noticeably cooler mornings. Rain falls on about 11 days this month. Sea temperature stays cool at 7.2°C (45°F).

This month falls at the end of Spring.

Daily highs in May gradually rise from around 9°C (49°F) at the start to 18°C (65°F) by month's end.

May sees fairly even rainfall, totalling about 91 mm across the month.

Expect around 7.7h of sunshine at the start of May, increasing to 10.7h by the end.

The warmest days tend to fall around the 30th, averaging 18.4°C (65°F).

Compared to April, this month is about 8°C warmer with 0 fewer rainy days. Temperatures will rise further into June.

Monthly May Averages

Temperature

14°C / 4°C

Feels Like

12°C / 1°C

Rain

11 days · 91 mm

Sunshine

9.6h / day

Humidity

75% — Humid

Wind

18 km/h

Wind Direction

NNW (331°)

Gusts

41 km/h

Daylight

15.2 h

Cloud Cover

63%

Clear Sky Days

3.7

UV Index

5.5 — High

Sea Temperature

7°C

Dew Point

5°C — Dry

Moon Phase

Waxing Gibbous · 66%

Snow Days

2 days · 2.6 cm

Frost Days

4 days

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

High Low

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 04:45

Daylight 15.2h

Sunset 19:57

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	-6°C / -14°C	-11°C / -20°C	10days (85 mm) Wet	5.3h Fair	77% Humid	1.7 Low	Poor	View Details
February	-5°C / -14°C	-11°C / -20°C	10days (77 mm) Wet	6.8h Fair	75% Muggy	3.2 Moderate	Poor	View Details
March	0°C / -8°C	-5°C / -14°C	13days (101 mm) Wet	7.8h Good	76% Humid	3.7 Moderate	Poor	View Details
April	5°C / -3°C	2°C / -7°C	11days (91 mm) Wet	8.7h Good	77% Humid	4.9 Moderate	Poor	View Details
May	14°C / 4°C	12°C / 1°C	11days (91 mm) Wet	9.6h Good	75% Muggy	5.5 High	Fair	View Details
June best	21°C / 11°C	20°C / 10°C	12days (94 mm) Wet	10.6h Excellent	76% Humid	5.8 High	Excellent	View Details
July best	24°C / 16°C	25°C / 16°C	13days (88 mm) Wet	11.5h Excellent	78% Humid	6.4 High	Excellent	View Details
August best	23°C / 15°C	24°C / 14°C	12days (94 mm) Wet	10.6h Excellent	79% Humid	5.6 High	Excellent	View Details
September best	19°C / 10°C	18°C / 8°C	9days (104 mm) Wet	8.2h Good	80% Humid	4.7 Moderate	Good	View Details
October	12°C / 5°C	10°C / 1°C	11days (96 mm) Wet	6.4h Fair	81% Humid	2.8 Moderate	Fair	View Details
November	3°C / -3°C	-1°C / -8°C	11days (103 mm) Wet	5.2h Fair	78% Humid	1.6 Low	Poor	View Details
December	-3°C / -11°C	-8°C / -16°C	12days (103 mm) Wet	4.8h Fair	78% Humid	1.3 Low	Poor	View Details

What to Wear

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.

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

Packing List

Layered clothingLight jacketUmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

Expand all

Is May a good time to visit Carleton?

May is typically fair for visiting Carleton, with average highs of 14°C (57°F) and around 11 rainy days. Carleton, Canada in May has mild conditions, with highs averaging 13.8°C (57°F) and noticeably cooler mornings. Rain fal

Does it rain a lot in Carleton in May?

Carleton typically sees around 11 rainy days in May with 91 mm (3.6 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Carleton in May?

Yes, nights in Carleton during May are cold, averaging 4°C (39°F). Pack warm layers and a coat for evenings.

What should I pack for Carleton in May?

With highs of 14°C (57°F) and lows of 4°C (39°F) in May, we recommend: Layered clothing, Light jacket, Umbrella, Waterproof jacket, Comfortable walking shoes. Comfortable walking shoes are essential.

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

May is not the most favourable month weather-wise in Carleton. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Carleton in May?

The average UV index in Carleton 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 Carleton in May?

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

Does it snow in Carleton in May?

Yes, Carleton typically sees around 2 snow days in May with roughly 3 cm (1 in) of snowfall.

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