Simcoe, Canada — Weather in May 2027

Monthly climate averages for Simcoe, Canada. Based on 10-year ERA5 reanalysis data.

Cfa Humid Subtropical
7.1 /10
Good

May is a good month in Simcoe

Climate Overview

Simcoe, Canada in May has mild conditions, with highs averaging 18.1°C (65°F) and noticeably cooler mornings. Rain falls on about 11 days this month.

This month falls at the end of Spring.

Daily highs in May gradually rise from around 15°C (59°F) at the start to 22°C (71°F) by month's end.

May sees fairly even rainfall, totalling about 86 mm across the month.

Expect around 7.8h of sunshine at the start of May, increasing to 11.5h by the end.

The warmest days tend to fall around the 28th, averaging 21.6°C (71°F).

Compared to April, this month is about 7°C warmer with 3 fewer rainy days. Temperatures will rise further into June.

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Monthly May Averages

Temperature
18°C / 10°C
Feels Like
17°C / 7°C
Rain
11 days · 87 mm
Sunshine
10.7h / day
Humidity
71% — Humid
Wind
22 km/h
Wind Direction
W (261°)
Gusts
38 km/h
Daylight
14.7 h
Cloud Cover
60%
Clear Sky Days
4.3
UV Index
6 — High
Dew Point
9°C — Dry
Moon Phase
Waxing Gibbous · 66%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

28°C 24°C 20°C 16°C 12°C 8°C 4°C 0°C 151015202531
HighLow

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 8 mm 151015202531
Rainfall

Daily Sunshine

0h 4h 8h 12h 16h 151015202531
Sunshine

Daily Wind Speed

0 6 12 18 24 30 151015202531
Wind Speed
Sun Position
Sunrise 06:00
Daylight 14.6h
Sunset 20:38

Compare Months

January
Poor
Temp
0°C / -5°C
Feels Like
-5°C / -11°C
Rain
12days (81 mm) Wet
Sun
4.9h Fair
Humidity
75% Muggy
UV
1.9 Low
Snow Days
15days
View Details
February
Poor
Temp
2°C / -5°C
Feels Like
-4°C / -11°C
Rain
11days (75 mm) Wet
Sun
6.4h Fair
Humidity
75% Muggy
UV
3.1 Moderate
Snow Days
11days
View Details
March
Poor
Temp
6°C / -1°C
Feels Like
1°C / -7°C
Rain
11days (88 mm) Wet
Sun
7.9h Good
Humidity
72% Muggy
UV
4.2 Moderate
Snow Days
7days
View Details
April
Poor
Temp
11°C / 4°C
Feels Like
8°C / -1°C
Rain
14days (96 mm) Wet
Sun
9.3h Good
Humidity
70% Muggy
UV
5 Moderate
Snow Days
3days
View Details
May best
Good
Temp
18°C / 10°C
Feels Like
17°C / 7°C
Rain
11days (87 mm) Wet
Sun
10.7h Excellent
Humidity
71% Muggy
UV
6 High
View Details
June best
Excellent
Temp
24°C / 16°C
Feels Like
24°C / 15°C
Rain
10days (74 mm) Wet
Sun
12.4h Excellent
Humidity
70% Muggy
UV
6.7 High
View Details
July best
Excellent
Temp
26°C / 19°C
Feels Like
28°C / 20°C
Rain
11days (91 mm) Wet
Sun
12.3h Excellent
Humidity
73% Muggy
UV
6.9 High
View Details
August best
Excellent
Temp
25°C / 19°C
Feels Like
27°C / 19°C
Rain
11days (92 mm) Wet
Sun
11.6h Excellent
Humidity
75% Muggy
UV
6.1 High
View Details
September best
Excellent
Temp
22°C / 16°C
Feels Like
22°C / 15°C
Rain
8days (62 mm) Wet
Sun
10h Excellent
Humidity
75% Muggy
UV
5.1 High
View Details
October
Fair
Temp
16°C / 10°C
Feels Like
13°C / 7°C
Rain
12days (97 mm) Wet
Sun
7.3h Good
Humidity
75% Muggy
UV
3.6 Moderate
View Details
November
Poor
Temp
8°C / 3°C
Feels Like
4°C / -2°C
Rain
12days (77 mm) Wet
Sun
5.8h Fair
Humidity
74% Muggy
UV
2.2 Moderate
Snow Days
4days
View Details
December
Poor
Temp
3°C / -2°C
Feels Like
-2°C / -8°C
Rain
13days (88 mm) Wet
Sun
4.2h Fair
Humidity
77% Humid
UV
1.7 Low
Snow Days
11days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 0°C / -5°C -5°C / -11°C 12days (81 mm) Wet 4.9h Fair 75% Muggy 1.9 Low Poor View Details
February 2°C / -5°C -4°C / -11°C 11days (75 mm) Wet 6.4h Fair 75% Muggy 3.1 Moderate Poor View Details
March 6°C / -1°C 1°C / -7°C 11days (88 mm) Wet 7.9h Good 72% Muggy 4.2 Moderate Poor View Details
April 11°C / 4°C 8°C / -1°C 14days (96 mm) Wet 9.3h Good 70% Muggy 5 Moderate Poor View Details
May best 18°C / 10°C 17°C / 7°C 11days (87 mm) Wet 10.7h Excellent 71% Muggy 6 High Good View Details
June best 24°C / 16°C 24°C / 15°C 10days (74 mm) Wet 12.4h Excellent 70% Muggy 6.7 High Excellent View Details
July best 26°C / 19°C 28°C / 20°C 11days (91 mm) Wet 12.3h Excellent 73% Muggy 6.9 High Excellent View Details
August best 25°C / 19°C 27°C / 19°C 11days (92 mm) Wet 11.6h Excellent 75% Muggy 6.1 High Excellent View Details
September best 22°C / 16°C 22°C / 15°C 8days (62 mm) Wet 10h Excellent 75% Muggy 5.1 High Excellent View Details
October 16°C / 10°C 13°C / 7°C 12days (97 mm) Wet 7.3h Good 75% Muggy 3.6 Moderate Fair View Details
November 8°C / 3°C 4°C / -2°C 12days (77 mm) Wet 5.8h Fair 74% Muggy 2.2 Moderate Poor View Details
December 3°C / -2°C -2°C / -8°C 13days (88 mm) Wet 4.2h Fair 77% Humid 1.7 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.

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

Packing List

Warm evening layerUmbrellaWaterproof jacketComfortable walking shoes

Frequently Asked Questions

May is typically good for visiting Simcoe, with average highs of 18°C (65°F) and around 11 rainy days. Simcoe, Canada in May has mild conditions, with highs averaging 18.1°C (65°F) and noticeably cooler mornings. Rain falls
Simcoe typically sees around 11 rainy days in May with 87 mm (3.4 in) of total rainfall. Pack a waterproof jacket.
Nights in Simcoe during May are cool at around 10°C (50°F). Bring a jacket or sweater for evenings.
With highs of 18°C (65°F) and lows of 10°C (50°F) in May, we recommend: Warm evening layer, Umbrella, Waterproof jacket, Comfortable walking shoes. Comfortable walking shoes are essential.
Yes, May offers some of the best weather conditions in Simcoe with comfortable temperatures and lower chances of rain.
The average UV index in Simcoe during May is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.
Simcoe gets approximately 15 hours of daylight per day in May, with around 11 hours of sunshine.
Snow is uncommon in Simcoe during May based on 10-year climate averages.

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